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Maryland Route 138

Maryland Route 138 marker

Maryland Route 138
Maryland Route 138 highlighted in red
Route information
Maintained by MDSHA
Length: 9.24 mi (14.87 km)
Existed: 1927 – present
Tourist
routes:
Horses and Hounds Scenic Byway
Major junctions
West end: MD 45 in Hereford
  MD 562 in Shepperd
East end: MD 23 near Shawsville
Location
Counties: Baltimore, Harford
Highway system
MD 137 MD 139

Maryland Route 138 marker

Maryland Route 138 (MD 138) is a state highway in the U.S. state of Maryland. The state highway runs 9.24 miles (14.87 km) from MD 45 in Hereford east to MD 23 near Shawsville. MD 138 connects northern Baltimore County with northwestern Harford County via the community of Monkton on Gunpowder Falls. The first section of the state highway was built east of Monkton in the 1910s. The remainder of MD 138 was built west of Monkton in the mid-1920s and east of Monkton in the early to mid-1930s. The state highway through Monkton was maintained by Baltimore County from the late 1960s to the mid-1990s, during which the highway was relocated at Gunpowder Falls.

MD 138 begins at an intersection with MD 45 (York Road) in Hereford, one block south of MD 45's intersection with MD 137 (Mount Carmel Road). The state highway heads east as two-lane Monkton Road to the village of Monkton, where the highway crosses Gunpowder Falls and intersects the Torrey C. Brown Rail Trail. On the east edge of the village, MD 138 veers east onto Shepperd Road and follows Charles Run upstream out of the valley. The state highway passes through the area patented in the 18th century as My Lady's Manor. In the hamlet of Shepperd, Shepperd Road ends at Troyer Road. MD 138 turns north onto Troyer Road and Troyer Road heads south as MD 562. The state highway passes through Troyer and curves along a ridge above the headwaters of Little Gunpowder Falls. MD 138 crosses the Baltimore–Harford county line and reaches its eastern terminus at MD 23 (Norrisville Road) in the hamlet of Blackhorse near Shawsville. Troyer Road continues east on the other side of the intersection as a county highway.


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