 Maryland Route 478 | ||||
|---|---|---|---|---|
| Knoxville Road | ||||
 Maryland Route 478 highlighted in red | ||||
| Route information | ||||
| Maintained by MDSHA | ||||
| Length | 1.88 mi[1] (3.03 km) | |||
| Existed | 1971–present | |||
| Tourist routes |  Chesapeake and Ohio Canal Scenic Byway | |||
| Major junctions | ||||
| West end |  MD 180 in Knoxville | |||
| East end | Florida Avenue in Brunswick | |||
| Location | ||||
| Country | United States | |||
| State | Maryland | |||
| Counties | Frederick | |||
| Highway system | ||||
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Maryland Route 478 (MD 478) is a state highway in the U.S. state of Maryland. Known as Knoxville Road, the state highway runs 1.88 miles (3.03 km) from MD 180 in Knoxville east to Florida Avenue in Brunswick. MD 478 was constructed as MD 70 in the late 1920s. In 1950, MD 70 was replaced with an extended MD 464. MD 478 was assigned to Knoxville Road after MD 464 was rerouted to its present terminus in 1968.