 These highways and the streets of Hagerstown and Williamsport were designated Maryland's portion of US 11 in 1926.The federal highway was improved outside of the towns in the years surrounding 1930 and again around 1950.Since the completion of I-81 in two sections in the late 1950s and mid-1960s removed long-distance traffic from the highway, US 11 has seen its two major relocations