Despite the bypassing of the original Philadelphia Road, improvements continued to be made to MD 7. The state highway was widened with dual shoulders from the Baltimore city limit to Rossville in 1938. MD 7 was widened through Havre de Grace in 1953 and through Elkton in 1954. The highway was relocated and became a divided highway on both sides of its intersection with MD 543 in Riverside concurrent with the construction of MD 543's interchange with I-95 in 1989. MD 7's roundabout at Holly Oak Circle in Riverside was installed in 2000. Several portions of the state highway have been transferred to local maintenance. The portion of MD 7 to the south of US 40 in the southern portion of Aberdeen was removed in 1950; MD 159 was extended north to MD 7's new eastern terminus and the remainder of Old Philadelphia Road became the responsibility of Harford County and Aberdeen. MD 7 between MD 213 and South Street in Elkton became one-way eastbound in 2001 and municipally maintained in 2003. The western terminus of that section of MD 7 was truncated at MD 213 in 2010, resulting in the portion of Main Street from a dead end at the Amtrak Northeast Corridor to MD 213 also becoming the responsibility of Elkton. In 2012, the MD 7 designation was removed from the portion of municipally-maintained roadway between MD 213 and South Street. In 2018, a roundabout was constructed at Seven Trails Drive.