Maryland Route 456

Maryland Route 456 (MD 456) is a state highway in the U.S. state of Maryland. Known as Del Rhodes Avenue, the state highway runs 1.20 mi from U.S. Route 50 (US 50) north to MD 18 within Queenstown. MD 456, which serves as a cut-off between US 50 and US 301 just east of the split of the two highways, is officially separated into two sections, MD 456 and MD 456A, by a superstreet intersection with US 301. The state highway was constructed in the early 1930s as a cut-off between Queenstown and MD 404, then the main east–west highway in western Queen Anne's County. MD 456 was extended south in the late 1940s when US 50 was moved to its present course.

Route description
MD 456 begins at an intersection with US 50 (Ocean Gateway) just east of Queenstown. The ramp from westbound US 50 to northbound MD 456 is the original alignment and has the unsigned designated US 50QB. MD 456 heads northwest as a two-lane undivided road along a row of residences. The state highway enters the town of Queenstown after crossing the Wye River. MD 656 (Friels Road) splits to the west before MD 456 officially ends at US 301 (Blue Star Memorial Highway), where the two highways meet at a superstreet intersection. Traffic on MD 456 is required to turn right onto US 301, make a U-turn, and turn right again to continue on MD 456. The roadway, now officially MD 456A, continues 0.32 mi to the highway's northern terminus at MD 18 (Main Street), officially MD 18C, in the center of Queenstown.

History
The Eastern Shore Boulevard, designated MD 404 by 1933, was completed around Queenstown by 1930. MD 456 was constructed from the MD 656 intersection north to the center of Queenstown shortly after 1930. When US 50 was moved to its present alignment south of Queenstown in 1949, MD 456 was extended south along the old section of MD 404 and MD 656 was designated on the section of old MD 404 between MD 456 and MD 18. The MD 456–US 301 junction was transformed into a superstreet intersection in 2003, resulting in the designation of MD 456A north of the junction.