Maryland Route 152
Maryland Route 152 (MD 152) is a state highway in the US state of Maryland. The state highway runs from an entrance to Aberdeen Proving Ground in Edgewood north to MD 146 near Taylor. MD 152 parallels the western edge of Harford County, connecting the communities of Joppatowne and Fallston with Interstate 95 (I-95), U.S. Route 40 (US 40), and US 1. The state highway north of Joppa was mostly built in the late 1920s and early 1930s. MD 152 south of Joppa was built around 1940; shortly thereafter, the highway was reconstructed as a wartime access project. The state highway originally had only a partial interchange with I-95; it was expanded to full interchange in the mid 1990s concurrent with the expansion of the highway to a four-lane divided highway through Joppa. Route description MD 152 begins at an entrance to the Edgewood Area of Aberdeen Proving Ground. The state highway heads north as two-lane undivided Magnolia Road and crosses over Amtrak's Northeast Corridor railroad line and MARC's Penn Line. MD 152 passes through the community of Magnolia, where the highway intersects Trimble Road, which connects the community with Edgewood to the east and Joppatowne to the west. The state highway expands to a four-lane divided highway ahead of its intersection with US 40 (Pulaski Highway), where the highway's name changes to Mountain Road. MD 152 crosses over CSX's Philadelphia Subdivision railroad line to arrive in the community of Joppa, where the highway is paralleled to the west by its old alignment, Old Mountain Road South. The state highway intersects MD 7 (Philadelphia Road) before meeting I-95 (John F. Kennedy Memorial Highway) at a diamond interchange. The interchange ramps to and from Baltimore intersect the old alignment, with a park and ride lot located in the southwest quadrant of the interchange. North of I-95, MD 152 receives the northern end of Old Mountain Road South and reduces to a two-lane undivided road to pass through the hamlet of Clayton. The state highway, which is paralleled on the east by another loop of old alignment, Old Mountain Road Central, has many sections of three-lane road with a center left-turn lane on its way northwest to Fallston. The state highway intersects Singer Road and Jerusalem Road in the village of Mountain. Singer Road heads east past the historic school McComas Institute; Jerusalem Road heads west to Jerusalem, a village within Gunpowder Falls State Park on Little Gunpowder Falls that contains the Jerusalem Mill Village and the Jericho Farm, which are connected by the Jericho Covered Bridge. Through the hamlet of Stockton, MD 152 is paralleled to the west by Old Mountain Road North and intersects Old Joppa Road, which heads northeast toward Bel Air providing access to the historic farm Olney and the Norris-Stirling House. Old Mountain Road North returns to the route, where a park and ride lot serving MTA Maryland commuter buses is located west of the road. MD 152 enters the community of Pleasant Hills, where it expands