Joppa Road is a county highway in the U.S. state of Maryland. The highway extends 14.3 miles (23.0 km) from Maryland Route 25 (MD 25) in Brooklandville east to MD 7 near White Marsh. Joppa Road has three main segments separated by very short breaks on its course through central and eastern Baltimore County. The central segment is a multi-lane highway from MD 45 and MD 146 in the county seat of Towson to U.S. Route 1 (US 1) in Perry Hall.
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