Special routes of U.S. Route 5
At least 12 special routes of U.S. Route 5 have existed.
Connecticut
New Haven–North Haven alternate route 1
New Haven–North Haven alternate route 2
New Haven–Meriden alternate route
Lamentation State Park–Tracy alternate route 1
Lamentation State Park–Tracy alternate route 2
Berlin alternate route
East Hartford–East Windsorhill alternate route
Hartford–West Springfield alternate route
Massachusetts
South Deerfield bypass route
Vermont
St. Johnsbury alternate route
U.S. Route 5 Alternate in St. Johnsbury, Vermont, runs parallel to US 5. US 5 goes through the downtown area, while US 5 Alt. goes around the west side of the city. The road has three names: Main Street, Mt. Pleasant Street, and Hastings Street. The route, known as Main Street at this point, starts from its southern terminus at its junction with US 5, just north of US 5's interchange with I-91. The road goes up a winding hill before meeting U.S. [Route 2 in Vermont|US 2]. Between its junctions with US 5 and US 2, US 5 Alt. is concurrent with US 2 Truck. US 2 goes west on Western Avenue, while US 5 Alt. continues north, concurrent with US 2. At the next intersection, US 2 turns east onto Eastern Avenue and US 5 Alt. continues on Main Street as the road turns slightly right. At Arnold Park, Main Street keeps right, while US 5 Alt. turns left onto Mt. Pleasant Street. After that, Mt. Pleasant Street keeps straight while US 5 Alt. veers right onto Hastings Street. The road keeps straight until its northern terminus at US 5 north of St. Johnsbury.;Major intersections