 The first upgrades to US 11 occurred when Williamsport Pike and Middleburg Pike were rebuilt and widened in the late 1920s and early 1930s , respectively . Williamsport Pike was rebuilt again in 1948 , with the highway widened using the right @-@ of @-@ way of the Williamsport – Hagerstown interurban that had ceased service in 1947 . By 1950 , US 11 in Hagerstown followed a one @-@ way pair : the northbound direction followed Summit Avenue and Jonathan Street between Virginia Avenue and Pennsylvania Avenue and the southbound direction used Prospect Street through the downtown area . The first relief from long @-@ distance traffic came to US 11 when the first section of I @-@ 81 was completed from US 40 to the Pennsylvania state line in 1958 . Following the completion of I @-@ 81 from US 40 south to the Potomac River in 1966 , US 11 became a highway mainly for local traffic . US 11 's bridge across the Potomac River was rebuilt in 1979 . In addition , the highway 's name south of Hagerstown was changed from Williamsport Pike to Virginia Avenue around 1995 . 
