User:Viridiscalculus/Project 410

Maryland Route 410 (MD 410) is a state highway in the U.S. state of Maryland. Known for most of its length as East-West Highway, the state highway runs 13.92 mi from MD 355 in Bethesda east to Pennsy Drive in Landover Hills. MD 410 serves as a major east-west commuter route through the inner suburbs on the north side of Washington, D.C., connecting the commercial districts of Bethesda, Silver Spring, and Hyattsville; the industrial area of Landover Hills; and the residential suburbs of Chevy Chase, Takoma Park, Riverdale. and East Riverdale. MD 410 connects many of the arterial highways and freeways that head out of Washington as well as transit hubs centered around stations of the Washington Metro in Bethesda, Silver Spring, Hyattsville, and New Carrollton, with additional connections to MARC and Amtrak. MD 410 is maintained mostly by the Maryland State Highway Administration, with small segments maintained by the city of Takoma Park and Prince George's County.

MD 410 was originally built along mostly new alignment between Bethesda and Silver Spring in the late 1920s. The state highway was extended east to Hyattsville in the mid 1930s. While the Montgomery County portion has not changed much in the ensuing decades, MD 410 has been realigned and extended multiple times within Prince George's County. These changes include an extension along existing roads further into Hyattsville in the mid 1940s, a realignment within Hyattsville in the mid 1950s, an extension through Riverdale in the late 1960s, and the final extension to Landover Hills in the early 1990s.

Montgomery County
MD 410 begins as a one-way pair of streets at the intersection of MD 355 (Wisconsin Avenue) and MD 187 (Old Georgetown Road) at the Bethesda station of the Washington Metro. Montgomery Avenue heads eastbound from MD 355 while the westbound direction is East-West Highway, which passes the Consumer Product Safety Commission and Bethesda-Chevy Chase High School. At the east end of Bethesda's central business district, MD 410 east has a U-turn ramp to MD 410 west, then the two streets come together and head east toward Chevy Chase as East-West Highway.

After crossing the Capital Crescent Trail, MD 410 continues east as a four-lane undivided highway with a speed limit of 30 mph through residential areas. The state highway passes Maple Avenue, which was formerly MD 82, on the edge of the town of Chevy Chase. MD 410 parallels Columbia Country Club to the south before intersecting MD 185 (Connecticut Avenue). Beyond MD 185, the speed limit increases to 35 mph. After meeting the northern terminus of MD 186 (Brookville Road), the state highway turns northeast and heads into the valley of Rock Creek. MD 410 meets Jones Mill Road and Beach Drive before crossing Rock Creek, then intersects Meadowbrook Drive. Continuing northeast, the state highway gains a narrow median and intersects Grubb Road. After passing the intersection of Washington Avenue and Sundale Drive, MD 410 becomes undivided again and enters an area of high-rise and garden apartments. After passing Rosemary Hills Drive, the state highway curves to the east and comes very close to the north corner boundary of the District of Columbia.

Upon entering Silver Spring, MD 410 intersects MD 390 (16th Street). The state highway curves to the southeast to meet MD 384 (Colesville Road) next to the Silver Spring Metro station and the Silver Spring offices of the National Oceanic and Atmospheric Administration. After the speed limit reduces to 30 mph, MD 410 continues southeast, passing the intersection of Blair Mill Road and Newell Street before arriving at the five-way intersection with U.S. Route 29 (Georgia Avenue). From US 29, the state highway turns east onto Burlington Avenue and crosses CSX's Metropolitan Subdivision, MARC's Brunswick Line, and the Red Line of the Washington Metro. At Fenton Street, MD 410 veers southeast onto Philadelphia Avenue, which heads into Takoma Park.

Philadelphia Avenue enters Takoma Park as a two-lane road with a speed limit of 30 mph through a densely populated residential area. After passing the Takoma Park/Silver Spring campus of Montgomery College, the state highway intersects MD 320 (Piney Branch Road). After a four-way stop at Holly Avenue, MD 410 turns east and intersects Maple Avenue, where the speed limit decreases to 25 mph. The state highway heads toward an intersection with MD 195 (Carroll Avenue) in front of the Takoma Park Volunteer Fire Department. After a short concurrency with MD 195 through Takoma Junction, MD 410 continues east on Ethan Allen Avenue. After a three-way stop at Jackson Avenue, the state highway reaches an intersection with MD 650 (New Hampshire Avenue), where MD 410 leaves Takoma Park and Montgomery County.

Traffic density varies along MD 410 in Montgomery County, with the segment just west of MD 390 having an average annual daily traffic (AADT) figure of 26,930 vehicles. The portion of MD 410 west of MD 195 in Takoma Park is the least travelled segment of the state highway in Montgomery County and overall with an AADT of 9,560.

Prince George's County
MD 410 changes its name back to East-West Highway upon entering Hyattsville. The state highway heads east from MD 650 as a four-lane undivided highway with a speed limit of 30 mph through suburban residential areas. MD 410 crosses Sligo Creek and the Sligo Creek Trail before entering a commercial area and meeting MD 212 (Riggs Road). Shortly after MD 212, Ager Road continues southeast straight toward the West Hyattsville Metro station while MD 410 veers east as a four-lane divided highway with a speed limit of 40 mph. After crossing Northwest Branch, the state highway enters a commercial area where it passes between The Mall at Prince George's on the north and the Prince George's Plaza Metro station on the south. After crossing Belcrest Road, which is used to access University Town Center and the National Center for Health Statistics, MD 410 intersects MD 500 (Queens Chapel Road) and Adelphi Road and leaves Hyattsville.

MD 410 expands to a six-lane divided highway with a speed limit of 35 mph after the MD 500 intersection and passes through a residential area on the southern edge of University Park. The state highway then reaches US 1 and enters Riverdale Park and the town's historic district. MD 410 reduces to a four-lane divided highway and crosses CSX's Capital Subdivision and MARC's Camden Line. The state highway then crosses Northeast Branch and meets MD 201 (Kenilworth Avenue). After crossing MD 201, MD 410 again expand to six lanes. After the intersection with Riverdale Road, the state highway enters the unincorporated area of East Riverdale and assumes the name Riverdale Road. MD 410 changes to a five-lane road with center turn lane with a speed limit of 40 mph as it rolls through residential areas. The state highway meets the Baltimore-Washington Parkway (unsigned MD 295) at a diamond interchange. Just east of the parkway, Riverdale Road continues straight toward New Carrollton while MD 410 turns south into Veterans Parkway.

MD 410 heads south through a forested area as a four-lane divided highway with a speed limit of 45 mph. The state highway intersects MD 450 (Annapolis Road) as the road reaches Landover Hills. MD 410's next intersection is with Ellin Road, which leads to a secondary entrance and park and ride for the New Carrollton Metro station. The state highway meets US 50 (John Hansen Highway) at a diamond interchange, then crosses the Amtrak Northeast Corridor, MARC's Penn Line, and the Orange Line of the Washington Metro. After crossing the railroad tracks, MD 410 enters Ardwick Ardmore Industrial Park and meets its eastern terminus at Pennsy Drive, which heads east toward the primary entrance for the New Carrollton Metro station and Ardwick-Ardmore Road.

The most heavily travelled segment of MD 410 in Prince George's County and overall is between MD 500 and US 1, which has an AADT of 43,971. The section between Riverdale Road and MD 450 is the least travelled segment of MD 410 in the county with an AADT of 20,821.

History
The Bethesda-Silver Spring Highway was conceived in the late 1920s as a means of directly connecting the two inner suburbs on the north side of Washington. The highway was under construction between 1927 and 1929 and signed as MD 410 by 1930. When completed, MD 410 extended between what was then US 240 in Bethesda and 16th Street in Silver Spring, which had been extended north from the District of Columbia in 1928. Continuing to the present center of Silver Spring required heading south on 16th Street to Blair Portal, then east on Colesville Road, which had been extended to Blair Portal in 1927, to Georgia Avenue. Most of MD 410 was built on a new alignment with the exception of the part between present day MD 186 and Jones Mill Road, which followed the old Brookville Road.

By 1933, the new state highway was the busiest road in Montgomery County. The road, which became known as East-West Highway, was originally built with a width of 20 feet, but the heavy traffic led the Maryland State Roads Commission (SRC), the predecessor of MDSHA, to suggest in 1934 that the road be widened to 40 feet in the near future. SRC also recommended extending the East-West Highway through Silver Spring and Takoma Park to Hyattsville. By 1935, the highway was extended along new alignment east from 16th Street to Takoma Park, then placed on Philadelphia Avenue and Ethan Allen Avenue within Takoma Park. The extension to MD 212 in Hyattsville was completed in 1936.

After World War II, MD 410 was extended even further east and saw significant improvement on its extent sections, By 1946, MD 410 was extended over Ager Road, Hamilton Street, 38th Avenue, and Jefferson Avenue, roads then designated MD 209, to a new eastern terminus at US 1 in Hyattsville. In addition, the pre-1946 course saw completion of efforts to widen the road to 40 feet. The highway between Connecticut Avenue (then MD 193) and Georgia Avenue (US 29) was widened in 1946 and 1947. The two segments between Wisconsin Avenue (US 240) and Connecticut Avenue (MD 193) and between MD 650 in Takoma Park and US 1 in Hyattsville were widened in 1950.

Beyond minor improvements, MD 410 in Montgomery County has remained in much the same state since 1950. The only major change was the highway being split onto a one-way pair of streets in Bethesda in 1988. The Prince George's County section has seen more substantial changes over the intervening decades. The first major change in alignment occurred in 1956, when MD 410 was completed on a new alignment as a four-lane divided highway between Ager Road just east of MD 212 and MD 500 at what is now Adelphi Road. The state highway was subsequently extended east over what was previously MD 403, known as Colesville Road, to US 1 in Riverdale.

The next change occurred between 1967 and 1970, when MD 410 was extended as a four-lane divided highway on a new alignment east past MD 201 to the Baltimore-Washington Parkway. This extension bypassed and replaced MD 412 between US 1 and the parkway. The adjoining segment of MD 410 between MD 500 and US 1 was also upgraded to a multi-lane divided highway by 1970. Finally, MD 410 was extended east on Veterans Parkway past US 50 to its current terminus at Pennsy Drive when that section of highway was completed between 1990 and 1993.

Old Route Description
Maryland Route 410 begins at Maryland Route 355 in Bethesda. The state highway heads east, intersecting Maryland Route 185 in Chevy Chase, then turns northeast to meet U.S. Route 29 in Silver Spring, Maryland. MD 410 continues southeast through Takoma Park to Maryland Route 650. The state highway heads east through Hyattsville and crosses U.S. Route 1 and Maryland Route 201 in Riverdale. After an interchange with the Baltimore-Washington Parkway in East Riverdale, MD 410 turns southeast to intersect Maryland Route 450 and U.S. Route 50 before reaching its eastern terminus at Pennsy Drive in Landover Hills.

MD 410 retains the name East-West Highway along much of its length, but the highway has several local variants. The highway is designated Montgomery Avenue along part of the highway in Bethesda, Burlington Avenue for a short stretch in Silver Spring, Philadelphia Avenue and Ethan Allen Avenue within Takoma Park, Riverdale Road in East Riverdale, and Veterans Parkway in Landover Hills. MD 410 mostly travels through suburban residential areas, but the highway passes through a few high-rise commercial areas in Bethesda, Silver Spring, and Hyattsville. The structure of the highway ranges from a six lane divided highway in Hyattsville and Riverdale Park to two lanes in Takoma Park, with most of the highway being four lanes either divided or undivided. Traffic density varies along the length of MD 410, with the highest volumes in Hyattsville, where the highway has an average annual daily traffic figure of 43,971 just west of US 1. The lowest volumes on the highway are within Takoma Park, where the highway has an AADT of 9,560.

Montgomery County
MD 410 begins at MD 355 in Bethesda as a one-way pair. After the one-way pair comes together at the east end of Bethesda, the state highway passes Maple Avenue then intersects MD 185, Maryland Route 186, and Beach Drive and Jones Mill Road in Chevy Chase. In Silver Spring, MD 410 crosses Maryland Route 390, Maryland Route 384, and US 29. Finally, the state highway meets Maryland Route 320 and Maryland Route 195 in Takoma Park, and hits MD 650 on the border between Montgomery and Prince George's counties. MD 410 runs for 6.31 mi within Montgomery County. The state highway mostly passes through dense suburban residential areas, but it also connects the high-rise commercial districts of Silver Spring and Bethesda, both of which serve as transit hubs and contain stations on opposite arms of the Red Line of the Washington Metro.

MD 410 is mostly four lanes undivided within Montgomery County, with a substantial length of two-lane road in Takoma Park. Within Bethesda, the Montgomery Avenue segment of MD 410 has a one-way AADT of 16,870, while the East-West Highway portion has a one-way AADT of 16,060. Within Chevy Chase, the state highway has an AADT of 26,060 just west of MD 185, 20,070 between MD 185 and MD 186, and 26,930 just west of MD 390, which is the most heavily travelled segment of MD 410 in Montgomery County. In Silver Spring, MD 410 has an AADT of 22,240 between MD 390 and MD 384 and 13,410 just east of US 29. Finally, AADT numbers in Takoma Park are 11,040 just west of MD 320, 9,560 immediately to the west of MD 195, and 10,580 just west of MD 650. The portion of MD 410 west of MD 195 in Takoma Park is the least travelled segment of the state highway in Montgomery County and overall.

Bethesda
MD 410 begins as a one-way pair of streets at MD 355 (Wisconsin Avenue). The eastbound and westbound streets, Montgomery Avenue and East-West Highway, respectively, both terminate at intersections one block apart adjacent to the Bethesda Metro Center, which contains office buildings, hotels, restaurants, the Bethesda post office, and the Bethesda station on the Red Line of the Washington Metro.

'''Montgomery Avenue begins at the southern intersection with MD 355 and also receives traffic from the west leg of the intersection, one-way Montgomery Lane, which receives traffic from Woodmont Avenue and Maryland Route 187 south. The street heads east as a three-lane road with a speed limit of 25 mph''' through office buildings, high-rise apartments, and small businesses. '''At the east end of Bethesda, the two right lanes continue east toward Chevy Chase as the pair of one-way streets comes together, while the left lane loops back and intersects the westbound lanes at a half-signal. '''

'''East-West Highway heads west from the one-way pair split as a two-lane street with a speed limit of 25 mph. The street expands to three lanes after passing between''' the headquarters of the U.S. Consumer Product Safety Commission on the south and Bethesda-Chevy Chase High School on the north. '''After Waverly Street, MD 410 west expands to five lanes ahead of its intersection with MD 355. The left two lanes are separated from the other three lanes; the left lanes turn left onto MD 355 south. The middle two lanes veer right onto MD 187 (Old Georgetown Road), which heads northwest as a one-way street toward Woodmont Avenue, while the right lane turns onto MD 355 north. '''

Chevy Chase
MD 410, now named East-West Highway, heads east out of Bethesda as a four-lane undivided highway with a speed limit of 30 mph through residential areas. After crossing over the Capital Crescent Trail on a bridge completed in 1996, the state highway descends into the valley of Coquelin Run, where it meets Maple Avenue, a street in the town of Chevy Chase that was formerly part of Maryland Route 82. After heading uphill from the valley, MD 410 parallels Columbia Country Club to the south before intersecting MD 185 (Connecticut Avenue).

After crossing MD 185, MD 410 continues east as a four-lane undivided highway with a speed limit of 35 mph. After passing the northern terminus of MD 186 (Brookville Road), the state highway turns northeast and heads into the valley of Rock Creek. MD 410 meets Jones Mill Road and Beach Drive at a signalized intersection before crossing Rock Creek on a bridge built in 1974. After passing Meadowbrook Lane, '''which provides access to the Meadowbrook Stables and the Candy Cane City park, the state highway becomes a four-lane divided highway with a narrow stone-faced median and service roads to serve adjacent residences. '''

At the top of the next hill, MD 410 intersects Grubb Road, which leads to Lyttonsville Road and an industrial area to the north that includes the Forest Glen Annex. The state highway next intersects Washington Avenue and Sundale Road, where the road becomes undivided again.  After passing Rosemary Hills Drive and crossing Fenwick Branch of Rock Creek on a bridge completed in 1929, MD 410 heads uphill and curves to the east through a series of garden and mid-rise apartment complexes. Within this curve, the state highway comes within 60 ft of the north corner boundary of the District of Columbia. At the top of the hill, MD 410 enters Silver Spring.

Silver Spring
Immediately upon entering Silver Spring, MD 410 intersects MD 390 (16th Street), which heads south to become 16th Street N.W. in Washington and north to connect with Maryland Route 97 (Georgia Avenue). After crossing MD 390, the state highway passes more apartment complexes and curves to the southeast, where it intersects MD 384 (Colesville Road), ''which heads north to provide access to downtown Silver Spring, the Silver Spring station for both the Washington Metro and MARC, and U.S. Route 29 north toward Columbia.  The Silver Spring offices of the National Oceanic and Atmospheric Administration, including the headquarters of the National Weather Service, are located on the northeast corner of the MD 410-MD 384 intersection.

After the MD 384 intersection, the speed limit drops to 30 mph and MD 410 passes a shopping center and a series of high-rise apartment buildings. The road meets Blair Mill Road and Newell Street at a biased four-way intersection and passes an office of Discovery Communications '''before the two eastbound lanes narrow ahead of the approach to the intersection with US 29 (Georgia Avenue).  The intersection with US 29 is a five-way affair also involving 13th Street. Left turns from MD 410 east to US 29 north and from US 29 south to MD 410 east are prohibited. At this intersection, MD 410 temporarily turns east and its name changes to Burlington Avenue. The highway narrows to three lanes, one eastbound and two westbound, as it crosses the railroad tracks of the Metropolitan Subdivision of CSX, the MARC Brunswick Line, and the Red Line of the Washington Metro on a bridge built in 1975. After an intersection with Fenton Street, which provides access to downtown Silver Spring to the north and the Takoma Park/Silver Spring Campus of Montgomery College to the south, MD 410 turns southeast again and enters Takoma Park.

Takoma Park
MD 410 continues southeast as Philadelphia Avenue, a two-lane highway with a speed limit of 30 mph lined with residences. At Chicago Avenue, the state highway passes between Silver Spring Intermediate Park to the north and buildings of Montgomery College to the south and enters the municipal limits of Takoma Park. Shortly after passing the signalized intersection with Takoma Avenue, MD 410 heads downhill for its intersection with MD 320 (Piney Branch Road), which is immediately followed by an intersection with Chestnut Avenue, which was formerly Maryland Route 540. After a four-way stop at Holly Avenue, MD 410 heads downhill and curves to the east ahead of intersection with Maple Avenue. Maple Avenue north provides access to the Takoma Park Library, Takoma Park City Hall, and both the Sligo Creek Trail and Sligo Creek Parkway 0.5 mi to the north.

After crossing Maple Avenue, MD 410 turns southeast again and the speed limit drops to 25 mph as the road heads uphill towards the Takoma Junction commercial area. At Park Avenue, the state highway veers east for its western intersection with MD 195 (Carroll Avenue) across from the Takoma Park Volunteer Fire Department. After the two routes are concurrent for 400 ft through Takoma Junction, MD 195 splits to the northeast at an intersection that also features Sycamore Avenue. MD 410 continues east as Ethan Allen Avenue. After a three-way stop at Jackson Avenue, the state highway heads southeast to an intersection with MD 650 (New Hampshire Avenue), where MD 410 leaves Takoma Park and Montgomery County.

'''There are three segments of MD 410 that are municipally maintained within Takoma Park. These stretches include 0.17 mi between Chestnut Avenue and Cedar Avenue, 0.27 mi between Maple Avenue and the western intersection with MD 195, and 0.53 mi between the eastern intersection with MD 195 and Elm Avenue. '''

Prince George's County
MD 410 heads east from MD 650 into Hyattsville, where the state highway intersects Maryland Route 212, Ager Road, and Maryland Route 500 and Adelphi Road. Within Riverdale Park, the highway crosses US 1 and MD 201. After the interchange with the Baltimore-Washington Parkway in East Riverdale and an intersection with Riverdale Road, MD 410 heads through Landover Hills, where it meets MD 450 and US 50 before ending at Pennsy Drive. The highway runs for 7.61 mi within Prince George's County. MD 410 passes mostly through dense suburban residential areas, but it also serves the commercial district surrounding Prince George's Plaza in Hyattsville and a large industrial park at its eastern terminus in Landover Hills. Both locations are also transit hubs, with Prince George's Plaza located on Washington Metro's Green Line and the eastern terminus close to New Carrollton (Washington Metro), the eastern terminus of the Orange Line and a station on the Amtrak Northeast Corridor and MARC's Penn Line.

MD 410 is most frequently a four-lane divided highway within Prince George's County, with short stretches of six-lane highway in Hyattsville and Riverdale Park. Within Hyattsville, MD 410 has AADTs of 21,681 just east of MD 650, 21,451 immediately to the west of MD 212, 37,201 between MD 212 and Ager Road, 24,601 between Ager Road and MD 500, and 43,971 between MD 500 and US 1, which is the most heavily travelled segment of MD 410 in Prince George's County and overall. In Riverdale, the stretch between US 1 and MD 201 has an AADT of 37,791, while the segment between MD 201 and the Baltimore-Washington Parkway has a traffic density of 38,261. MD 410 has an AADT of 20,821 in Landover Hills between Riverdale Road and MD 450, which is the least travelled observed segment of MD 410 within the county.

Hyattsville
MD 410 changes its name back to East-West Highway upon entering Prince George's County. The state highway heads east from the MD 650 intersection as a five-lane road with center turn lane with a speed limit of 30 mph through suburban residential areas. After passing under dual transmission lines, MD 410 slims down to a four-lane road''' with service roads for the adjoining residences.  The state highway crosses Sligo Creek on a bridge completed in 1934''' and is crossed by the Sligo Creek Trail at grade. MD 410 enters a commercial area and widens to a six-lane divided highway just short of the intersection with MD 212 (Riggs Road). Shortly after MD 212, the right lane continues straight southeast onto Ager Road, which is an old alignment of MD 410 and, before that, of Maryland Route 209. Ager Road heads straight for the western section of Hyattsville and the West Hyattsville station of the Washington Metro, while the left two lanes veer to the east through a half-signal to continue on MD 410. There is no direct access between MD 410 to the east and Ager Road to the southeast.'''

MD 410 continues east as a four-lane divided highway with a speed limit of 40 mph. The intersection with 23rd Avenue is used to access residential subdivisions and the east to south movements missing at the Ager Road intersection. MD 410 crosses Northwest Branch '''on a bridge built in 1955 and reconstructed in 1974.  The state highway enters the corporate limits of Hyattsville and enters a commercial area after passing Toledo Terrace, where the highway expands to five lanes, two eastbound and three westbound with one additional right turn only lane in each direction.  MD 410 passes between The Mall at Prince Georges on the north and a shopping center fronting''' the Prince George's Plaza station of the Washington Metro. '''The two destinations are connected by an overhead pedestrian walkway whose use is encouraged by tall iron fences in the median that discourage pedestrians from crossing MD 410. Shortly after passing under the pedestrian walkway,''' the state highway intersects Belcrest Road. Belcrest Road north is used to access University Town Center, a mixed-use development that features the headquarters of the National Center for Health Statistics and a satellite campus of Prince George's Community College. MD 410 intersects MD 500 (Queens Chapel Road) and Adelphi Road at the next intersection, beyond which the route leaves the city of Hyattsville.

Riverdale
MD 410 expands to six lanes after the MD 500 intersection as the road passes through a residential area with a speed limit of 35 mph along the southern edge of University Park. The road soon reaches its intersection with US 1, where the route enters both the corporate limits of Riverdale Park and the limits of the Riverdale Park Historic District. MD 410 reduces to a four-lane divided highway, then crosses the railroad tracks of the Capital Subdivision of CSX and MARC's Camden Line '''on a bridge built in 1967.  The median expands to accommodate an unnamed east-flowing stream at 44th Street, which heads south toward''' the historic home Riversdale. After passing Taylor Street, which leads south to the town offices of Riverdale Park, the stream leaves the median to drain into Northeast Branch, which MD 410 crosses '''on a bridge completed in 1967. ''' The state highway then arrives at its junction with MD 201 (Kenilworth Avenue).

After crossing MD 201, MD 410 once again expands to six lanes. After the intersection with Riverdale Road, which is the old alignment of former Maryland Route 412, MD 410's predecessor route in this area, the state highway enters the unincorporated area of East Riverdale and assumes the name Riverdale Road. MD 410 then changes to a five-lane road with center turn lane and wide shoulders with a speed limit of 40 mph as it rolls through residential areas. The state highway meets the Baltimore-Washington Parkway (unsigned Maryland Route 295) at a diamond interchange and turns northeast through a mix of residential and commercial properties. MD 410 then turns right onto Veterans Parkway. Riverdale Road continues straight toward New Carrollton. '''The 0.35 mi segment of MD 410 between the southbound ramps of the Baltimore-Washington Parkway interchange and Riverdale Road east is maintained by Prince George's County. '''

Landover Hills
MD 410 heads southeast on Veterans Parkway, a four-lane divided highway with a speed limit of 45 mph, through forested areas. The state highway intersects MD 450 (Annapolis Road) as the road reaches Landover Hills. After passing MD 450, MD 410 turns south toward its terminus. The next intersection is with Ellin Road, which leads east toward both the New Carrollton Federal Center, which contains offices for the Internal Revenue Service, and a secondary entrance and park and ride for the New Carrollton station of the Washington Metro, which also serves as a station for Amtrak and MARC's Penn Line.

MD 410 then intersects US 50 (John Hanson Highway) at a diamond interchange completed in 1990. After crossing U.S. 50, the state highway crosses the railroad tracks of the Amtrak Northeast Corridor, MARC's Penn Line, and the Orange Line of the Washington Metro on a bridge completed in 1988. MD 410 passes between distribution centers as it enters Ardwick Ardmore Industrial Park. MD 410 then meets its eastern terminus at a signalized intersection with Pennsy Drive. Pennsy Drive east provides access to the primary entrance and park and ride facilities for the New Carrollton rail station as well as Ardwick-Ardmore Road. -->

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List of References Needed
56 references!!! That leaves 25 references to be placed in the first run, still a nice number.
 * refers to references where confirmation will only provide the location of a building or area. These 31 references are less urgent and will not be included in the first run.

=Infobox= Montgomery HLR DONE just spread citations Prince George's HLR DONE just spread citations =Lead= Riverdale** =Route Description= AADT 2008 Montgomery DONE AADT 2008 Prince George's DONE =Bethesda= Google Map DONE just spread citations Bethesda Metro Center** Bethesda Metro Station** Consumer Product Safety Commission** Bethesda-Chevy Chase High School** =Chevy Chase= Capital Crescent Trail** USGS Map National Bridge Inventory DONE Columbia Country Club** Meadowbrook Stables/Candy Cane City** Forest Glen Annex** =Silver Spring= Silver Spring Metro Station** NOAA Headquarters** Discovery Communications** Montgomery College SS/TP** =Takoma Park= Silver Spring Intermediate Park** MoCo?** Takoma Park Library** Takoma Park City Hall** Sligo Creek Trail** Takoma Junction** Takoma Park VFD** =Hyattsville= West Hyattsville Metro** Mall at Prince George's** Prince George's Plaza Metro** Metro Shopping Center** University Town Center** National Center for Health Statistics** PGCC Satellite Campus** =Riverdale= Riverdale Park Historic District** Riversdale** Riverdale Park Town Hall** =Landover Hills= New Carrollton Federal Center** New Carrollton Metro** Ardwick-Ardmore Industrial Park** =History= Woodside Park DONE 1930 map DONE 1934 SRC report DONE 1935 map DONE 1936 SRC report DONE 1946 map DONE 1940 map DONE 1948 SRC report DONE 1950 SRC report DONE 1952 SRC report DONE 1988 traffic count map DONE 1956 map DONE 1956 SRC report DONE 1954 SRC report DONE 1970 map DONE 1993 traffic count map DONE

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Map Notes:

1927: MD 209 is in red from MD 212 to some point along Hamilton St.

1930: Marked in red from Bethesda to Silver Spring, but only approximately along eventual route. In Silver Spring, the road dips down to Blair Portal, then up Colesville Road to Georgia Ave.

1933: MD 410 still marked on approximately route, not even following the relevant section of Brookville Road. However, it is signed as MD 410. In Silver Spring, road appears to follow DC boundary, then Colesville Road. Riverdale Road from U.S. 1 to MD 201 (then 205) was paved (check 1930 status). MD 403 (Colesville Road from MD 500 to U.S. 1) (or was it Queensbury Road?) may have been paved as well.

1935: MD 410 is still approximately drawn in the west, but the Silver Spring portion is closer to reality. The section between MD 390 and MD 384 is now marked. The road also extends through south Silver Spring and Takoma Park, although the part between U.S. 29 and MD 320 is approximate, seeming to cross the tracks south of the current crossing. Road intersects an under-construction MD 650. Appears to be county or city maintained within Hyattsville at the edge of the D.C. inset.

1936: MD 410's route west of Silver Spring continues to be approximate. Ager Road is shown headed all the way to U.S. 1.

1938: No changes.

1939: Finally we have ample route numbers! MD 410 is applied from Bethesda to MD 212. MD 209 is applied from MD 212 to West Hyattsville. It is not clear if the MD 209 designation continued into Hyattsville. There is no road portrayed between MD 500 and US 1. Queensbury Rd-Riverdale Road has no number.

1940: No changes.

1946: MD 410 extended east to West Hyattsville. Hyattsville segment is unmarked. Riverdale Road is marked MD 412. No state highway between MD 500 and U.S. 1.

1948: No change.

1949: No change.

1950: MD 410 is marked on Hamilton St (then Columbia Ave) in Hyattsville. Appearing also is a solid black state road between MD 500 and U.S. 1 and a black dashed state road headed east from East Riverdale.

1951: No changes.

1953: The road east of East Riverdale is now solid black line.

1954: May be in earlier maps that 410 heads north and then east from the northern end of 208. Along 38th and Jefferson instead of Hamilton? MD 412 no longer appears on segment from U.S. 1 to MD 201.

1955: No changes.

1956: MD 410 completed as a dual highway on new alignment between MD 212 (site called Green Meadows) and MD 500.

1957: No changes

1959: No changes

1960: No changes

1970: MD 410 is divided highway from just west of MD 212 east to midway between MD 201 and B-W Pkwy (where the road is five lanes today). MD 412 remains between U.S. 1 and MD 201. Riverdale Road east of B-W Pkwy is marked as a non-state route.

1980: No changes, except all of Riverdale Road is now marked blue.

Traffic Volume Maps

1988: There is no line for MD 410 east of B-W Pkwy. No MD 412.

1986: There is line for MD 412, but not in 1987.

MD 410 became a one-way pair in Bethesda in 1988. Deduced from the traffic volume counts, which go from 31000 in 1987 to 15250 in 1988. It takes a few years for the SHA to compensate on their maps.

1993: Veterans Pkwy finally shows up. MD 410 extends east to U.S. 50.

SRC Report Notes:

1934:

p. 20: Table: East and West Highway (410) from 16th St to Bethesda has a present width of 20 ft, but is proposed for 40 ft, as it carries 4159 vehicles a day over a length of 3.56 miles. [This is close to today's length of 3.48 miles between the two points, using Montgomery Ave.]

p. 21: Table: Ager Road (209) from Riggs Road to Queens Chapel has a present width of 15 ft, but is proposed for 20 ft, as it carries 1829 vehicles a day over a length of 1.34 miles.

p. 37: "12. Extensions and improvements to the East-West suburban highway through the town of Takoma Park and continuing toward Hyattsville."

1936:

p. 105: "In [Prince George's County] there have been built 1.01 miles of concrete pavement to complete East-West Highway..."

1940:

p. 111: "In the past two years, with prison labor, bituminous shoulders have been built on...1.34 miles on Ager Road..."

p. 111: "Both the Ager Road and University Drive "dead end" at the Queens Chapel Road. By extending these roads they could both enter the Queens Chapel Road near the Northeast Branch, which would greatly improve conditions."

1942:

p. 57: Prison labor: "Ager Road from Queen's Chapel Road to Riggs Road-two 2.5 ft bituminous shoulders-1.34 miles"

p. 95: Improvement: Colesville Road from the Baltimore-Washington Boulevard to University Drive-0.5 mile." University Drive is now Adelphi Road.

1944:

p. 4: Request denied for funds by War Production Board for a project on "Ager-Queen Chapel Road in Prince George's County"

1948:

p. 20: Prison labor: "Widening East-West Highway, Md. Route 410, in vicinity of Rock Creek to an ultimate width of 40 feet for a distance of 0.65 miles."

p. 83: "Signals installed...Queens Chapel Road and Ager Road...4-16-47...semi-actuated... Entrance to Ager Road Elementary School...6-11-47...pedestrian control" The school is now Rosa Parks Elementary School, and the signal is no more.

p. 84: "Signals installed...Colesville Road and East-West Highway...9-26-47...fixed time... New Hampshire Ave. and East-West Highway...10-6-47...fully-actuated... Ethan Allen and Carroll Aves...3-25-48...Three-phase fixed time..."

p. 114: "July 1, 1946-June 30, 1947...East-West Highway (Georgia Ave. to Connecticut Avenue)...10 ft. macadam shoulders...2.40 miles..."

1950:

p. 126: Table: MD 410 resurfaced between Georgia Ave and Chestnut Ave (0.85 miles, 48-49) and MD 410 resurfaced between Wisconsin Ave and Georgia Ave (4.048 miles, 49-50)

p. 152-53: "Md. Route 410, between Takoma Park and Hyattsville, was widened and resurfaced, for a distance of 3.838 miles, with bituminous concrete, Tables on p. 156 and 158 mention resurfacing of MD 410 between Hamilton St and University Drive, which makes no sense, since that stretch could only be MD 500.

p. 199: Signal installed: "Philadelphia Ave. and Piney Branch Road, Takoma Park...3-29-49...full-actuated..."

p. 200: Signal installed: "Ager and Riggs Roads...9-15-49...full-actuated..." "Queens Chapel Road and Hamilton St...2-7-50...Fixed-time..." "East-West Highway and 16th Street...2-17-50...Semi-actuated..." "East-West Highway and Grubb Road...6-15-50...Semi-actuated..."

p. 201: Special study reports: "New Hampshire Avenue and East-West Highway...Channelization"

1952:

p. 228: Signal installed: Ager Road and Hamilton St...9-1-50...full-actuated three-phase"

p. 229: Signal installed: East-West Highway and Jones Mill Rd., Beach Drive...1-25-52...semi-actuated"

1954:

p. 163: Table: Md. 403 from U.S. 1 to Md. 500. 0.484 miles resurfaced Md. 412 from Md. 205 to U.S. 1. 1.042 miles resurfaced. Md. 208 from Md. 410 to Rhode Island Ave. 1.402 miles resurfaced and widened.

1956:

p. 148: "A major relocation of 1.87 miles of the East-West Highway between Riggs Road and Queens Chapel Road will be completed in the fall of 1956."

p. 152: Table: Md. 410 relocated from Ager Road to Queens Chapel Road, including an extension of Queensbury Road. (Is the latter the segment of Belcrest below MD 410?)

p. 153: Table: Carroll Ave. and Ethan Allen Ave. from Philadelphia Ave. to Sycamore Ave. widened and resurfaced.

2008 AADTs: B Bethesda-Montgomery Ave between MD 355 and end one-way pair: 16,870 Bethesda-East-West Hwy between begin one-way pair and MD 355: 16,060 CC Between (MD 82) and MD 185: 26,060 MD 185, east of: 20,070 MD 390, west of: 26,930 SS MD 390, east of: 22,240 US 29, east of: 13,410 TP MD 320, west of: 11,040 MD 195s, west of: 9,560 MD 650, west of: 10,580 H MD 650, east of: 21,681 Linden Ave/Fairview Ave aka just west of MD 212: 21,451 MD 212, east of: 37,201 23rd Ave aka just east of Belcrest: 24,601 MD 500, east of: 43,971 RP US 1, east of: 37,791 ER MD 201, east of: 38,261 LH Riverdale Rd east, east of on Veterans Pkwy: 20,821

Bridges: Over Georgetown Branch: 1996 Rock Creek: 1974 Branch of Rock Creek: 1929 Brunswick Line: 1975 Sligo Creek: 1934 Northwest Branch: 1955-1984 Over Camden Line: 1967 Branch of Northeast Branch: 1968 Northeast Branch: 1967 Over US 50: 1990 Over Penn Line: 1988 --->