 This construction included the highway's bypass of Edgemere; the bypassed portion of Sparrows Point Road from the expanded highway east to MD 20 was designated MD 718 by 1946.In Baltimore, Erdman Avenue was expanded to a divided highway from US 1 to US 40 and extended south to North Point Road by 1942; MD 151's underpasses of the Baltimore and Ohio Railroad (now CSX) and Pennsylvania Railroad (now Amtrak) and its interchange with US 40 were completed at that time.MD 151 from Wise Avenue to the Baltimore City line was constructed between 1942 and 1944; this work included the cloverleaf interchange with MD 150.