The first divided highway project on US 113 in Maryland was the four-lane divided Berlin bypass, which was constructed between 1955 and 1957. A second carriageway was added to the existing highway from Hayes Landing Road to Main Street south of Berlin and for a short stretch north of Main Street on the north side of Berlin. Main Street through Berlin became MD 818 in 1958. When US 50's bypass of Berlin was built between 1957 and 1959, ramps from westbound US 50 to northbound US 113 and from eastbound US 50 to southbound US 113 were added. The remaining six ramps of the cloverleaf interchange and US 113's bridges across US 50 were completed in 1975 and 1976.