River in 1929 resulted in heavy traffic along MD 150. By 1934, an average of 5,275 vehicles per day used the highway between Baltimore and Middle River, leading the Maryland State Roads Commission to recommend widening the highway to in width. Relief did not come until just before World War II when MD 150 from Baltimore to Middle River was deemed a vital defense connection between the city and the Martin aircraft plant. MD 150 was expanded to a four-lane divided highway from Dundalk Avenue in Baltimore to east of the Martin aircraft plant in Middle River between 1942 and 1944. This expansion involved the construction of interchanges at Martin Boulevard (later designated MD 700) and North Point Boulevard, a northern extension of MD 151 that was also constructed as a defense access project. Replacement bridges were built over the Back River and Middle River. MD 150 was also relocated in Essex; Old Eastern Avenue was designated MD 600, a designation removed by 1956. By 1946, MD 150 had been extended west into the city of Baltimore over Eastern Avenue at least as far as Highlandtown. Around 1950, the state highway followed Highland Avenue south from US 40 to Eastern Avenue. MD 150 was moved to Kresson Street, Lombard Street, and Ponca Street, which met Eastern Avenue just west of its present junction, in 1960. Around 1963, Haven Street and Kresson Street were converted to a one-way pair, with Haven Street carrying eastbound traffic south and Kresson Street handling westbound traffic toward US 40. The portion of Lombard Street between Haven and Kresson was added to MD 150; the state highway was also extended north on Haven and Kresson to Monument Street, then east along Monument Street to MD 150's new western terminus at US 40 at the U.S. Highway's underpass of CSX's Philadelphia Subdivision. This convoluted path was ameliorated around 2002 when the highway was shortened to its present course in East Baltimore. Junction list See also References External links MDRoads: MD 150 MD 150 at AARoads.com Maryland Roads - MD 150 150 Maryland Route 150 Maryland Route 150