Maryland Route 806 is a state highway in the U.S. state of Maryland. The state highway runs a total of 4.05 miles (6.52 km) in two segments from U.S. Route 15 near Catoctin Furnace north to Roddy Creek Road near Thurmont. MD 806A, which has a length of 3.04 miles (4.89 km) from Catoctin Furnace to Thurmont, and MD 806R, which extends 0.55 miles (0.89 km) on the north side of Thurmont, are separated by a section of municipally-maintained road on the south side of Thurmont and a segment of MD 550 north of MD 77. MD 806 is the old alignment of US 15 through Catoctin Furnace and Thurmont. The state highway was originally constructed in the 1910s. MD 806 was assigned to the highway when US 15 bypassed Thurmont in the late 1950s. The state highway became a split route in the late 1980s. There have been several other segments of MD 806 along former sections of US 15 in Frederick County, including portions around Lewistown and south of Frederick.
View north along MD 806 at US 15 in Catoctin Furnace
U.S. Route 15 in Maryland
U.S. Route 15 (US 15) is a part of the United States Numbered Highway System that runs from Walterboro, South Carolina, north to Painted Post, New York. In Maryland, the highway runs 37.85 miles (60.91 km) from the Virginia state line at the Potomac River in Point of Rocks north to the Pennsylvania state line near Emmitsburg. Known for most of its length as Catoctin Mountain Highway, US 15 is the primary north–south highway of Frederick County. The highway connects the county seat of Frederick with Point of Rocks, Leesburg, Virginia, and Charles Town, West Virginia, to the south and with Thurmont, Emmitsburg, and Gettysburg, Pennsylvania, to the north. US 15 is an expressway throughout the state except for the portion south of MD 28. The highway is a freeway along its concurrency with US 340 and through Frederick, where the highway meets US 40 and Interstate 70 (I-70). US 15 has a business route through Emmitsburg.
US 15 southbound past Monocacy Boulevard/Christophers Crossing in Frederick
US 15 southbound and US 40 eastbound in Frederick, just before separating from US 40 and joining US 340
Riverside view from the Maryland side of the Point of Rocks Bridge, which carries US 15 across the Potomac River at Point of Rocks
View north along US 15 at MD 28 just north of Point of Rocks Bridge