 Route 37 was defined as the proposed Winchester By-Pass by 1963, and was included in the statewide Arterial Network when it was created in 1964.When I-81 opened past Winchester in November 1965, it included an interchange south of Winchester, taking traffic between I-81 and US 11 along a short connecting road.The north half of the bypass, from US 50 west of Winchester north and east to US 11 north of the city, opened in the late 1960s, and the semicircle was completed in the late 1970s, with the linking of Route 37 to the existing I-81/US 11 connection.