User:Hardworkingbee/favorites/I-66 Route

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A map of I-66, showing cities and intersections with other interstates.

I-66 Route trip

Exit list[edit]

County Location Mile # Destinations Notes
Frederick Middletown 0.0 1 I-81 – Winchester, Roanoke Westbound exit and eastbound entrance
Warren Front Royal 6.4 6 US 340 / US 522 – Winchester, Front Royal
12.9 13

SR 79 to SR 55 – Linden
Fauquier 18.5 18 SR 688 – Markham
23.3 23


US 17 north / SR 55 west – Delaplane, Paris 		West end of US 17/SR 55 overlap
Marshall 27.0 27

SR 55 east / SR 647 – Marshall 		East end of SR 55 overlap
28.3 28

US 17 south – Warrenton, Fredericksburg 		East end of US 17 overlap
The Plains 31.3 31 SR 245 / Old Tavern Road
Prince William Haymarket 40.5 40 US 15 – Leesburg, Haymarket
Gainesville 43.1 43 US 29 – Gainesville, Charlottesville
Manassas 44.5 44

SR 234 south (Prince William Parkway) 		West end of SR 234 overlap
47.3 47

SR 234 north / SR 234 Bus. (Sudley Road) – Manassas 		East end of SR 234 overlap
Yorkshire 48.8 Rest Area "Virginia Welcome Center" At entrance to Prince William County from Fairfax County; both sides now reopened[1]
Fairfax Centreville 52.1 52


US 29 to SR 28 south – Centreville
53.2 53 SR 28 (Sully Road) – Dulles Airport, Centreville Eastbound exit 53 is VA 28N (Dulles Airport) only; Westbound exit 53 is VA 28N/S
Fair Lakes 54.9 Not numbered SR 645 (Stringfellow Rd.) Eastbound left entrance open only to HOV-2+ traffic weekdays from 5:30 to 9:30 a.m. Westbound left exit open all other times; exit restricted to HOV-2+ traffic weekdays from 3:00 to 7:00 p.m.[2]
55.9 55 SR 7100 (Fairfax County Parkway) – Springfield, Reston, Herndon
Fairfax 57.1 Not numbered SR 6751 (Monument Dr.) - Fair Lakes, Fairfax Eastbound left entrance open only to HOV-2+ traffic weekdays from 5:30 to 9:30 a.m. Westbound left exit open all other times; exit restricted to HOV-2+ traffic weekdays from 3:00 to 7:00 p.m.[2]
58.1 57 US 50 – Winchester, Fairfax, Fair Oaks
60.1 60 SR 123 – Fairfax, Vienna
Vienna 62.5 62 SR 243 (Nutley Street) – Fairfax, Vienna
Dunn Loring 65.1 64 I-495 (Capital Beltway) – Richmond, Baltimore Left and right exit eastbound (left from HOV lane); no westbound exit to I-495 north
Tysons Corner 66.0 66 SR 7 (Leesburg Pike) – Falls Church
Falls Church 66.6 67

SR 267 to I-495 north / to Dulles Toll Road – Dulles Airport 		Westbound exit only
Arlington 67.8 68 Westmoreland Street Eastbound exit only
68.4 69 US 29 (Lee Highway) / SR 237 (Washington Boulevard) / Sycamore Street
70.5 71 SR 120 (Glebe Road) / SR 237 (Fairfax Drive)
72.1 72 US 29 (Lee Highway) / Spout Run Parkway Eastbound exit only
73.1 73 US 29 (Key Bridge) – Rosslyn
74.2 75
SR 110 south – Pentagon, Alexandria, Pentagon City, Crystal City 		Eastbound exit only
74.5 Not numbered
US 50 west / Arlington Boulevard, George Washington Memorial Parkway 		West end of US 50 overlap; westbound exit and eastbound entrance
State line
Washington 74.9 Independence Avenue
75.0
US 50 east / Constitution Avenue – Downtown 		East end of US 50 overlap; eastbound exit and westbound entrance
75.2 E Street Expressway
75.0 Whitehurst Freeway
74.6 Rock Creek Parkway Eastbound exit and westbound entrance
75.7 Pennsylvania Avenue / L Street NW Eastbound exit and westbound entrance
75.8
US 29 south / Canal Road 		Westbound exit and eastbound entrance
76.0 M street NW At-grade intersection


Numbered highways in the United States[edit]

  • Interstate Highways
    • The Interstate Highway System is a federally funded and administered (but state-maintained) system of freeways that forms the transportation backbone of the U.S., with millions of Americans relying on it for commutes and freight transport daily. Interstate highways are all constructed to precise standards, designed to maximize high-speed travel safety and efficiency. Interstate Highways also contain auxiliary routes, which are normally assigned a three-digit route number. All Interstate Highways are part of the National Highway System, a network of highways deemed essential to the defense, economy, and mobility of the country.
  • State Highways
    • Each state also has a state highway system. State highways are of varying standards and quality. Some state highways become so heavily traveled they are built to Interstate Highway standards. Others are so lightly traveled that they are roads of low quality.
  • County (Parish in Louisiana) Highways
    • The final administrative level in some states is the county-maintained county highway. County (parish) routes vary widely from well-traveled multilane highways to dirt roads into remote parts of the county (parish).

Highways are generally organized by a route number or letter. These designations are generally displayed along the route by means of a highway shield. Each system has its own unique shield design that will allow quick identification to which system the route belongs. Below is a list of the different highway shields used throughout the U.S.

External links[edit]

  1. ^ "Eight Additional Rest Areas Now Open". The Appomatox News. 2010-03-17. Retrieved 2010-03-21.
  2. ^ a b I-66 West HOV Ramps Now Open Off-Peak and Weekends. 2011-02-28. Retrieved 2011-02-28.
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