 Starting in 1896, the Hagerstown Railway Company of Washington County operated an interurban between Williamsport and Hagerstown adjacent to the turnpike.The streetcar suburb of Halfway developed along the turnpike and trolley line at the midpoint between the two municipalities.The first portion of modern US 11 to be constructed was the bridge over the Potomac River at Williamsport, which was financed and constructed by Washington County and completed in 1909.