At least 12 special routes of U.S. Route 5 (US 5) have existed.

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

South Deerfield bypass route

St. Johnsbury alternate route

U.S. Route 5 Alternate (US 5 Alt.) in

St. Johnsbury, Vermont St. Johnsbury (known locally as "St. J") is the shire town (county seat) of Caledonia County, Vermont, Caledonia County, Vermont, United States. As of the 2020 United States Census, 2020 census, the population was 7,364. St. Johnsbury is situated ...

, 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 (exit 20). The road goes up a winding hill before meeting 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

Newport alternate route

U.S. Route 5 Alternate (US 5 Alt.) in Newport, Vermont, runs parallel to US 5. US 5 goes through the downtown area, while US 5 Alt. goes around the southeast side of the city. The road that US 5 Alt. is on only carries the name of Coventry Street. This route starts from its southern terminus at its junction with US 5, near the edge of the city limits. The road goes northeast and meets with the South Bay on the east side. US 5 Alt. continues straight after intersecting with 2nd Street. Before the next intersection, US 5 turns northwest still as Coventry Street entering the Newport urban area. The road keeps straight until its northern terminus at US 5 in downtown Newport.

Derby Line alternate route

U.S. Route 5 Alternate (US 5 Alt.) in Derby Line, Vermont, is an alternate way to reach Canada from US 5. The road that US 5 Alt. is on only carries the name of Caswell Avenue. This route starts from its southern terminus at its junction with US 5 in downtown Derby Line. This road then travels east to

Interstate 91 Interstate 91 (I-91) is an Interstate Highway in the New England region of the United States. It provides the primary north–south thoroughfare in the western part of the region. The Interstate generally follows the course of the Connect ...

(I-91). At I-91, US 5 Alt. merges with the I-91 northbound continuing until its northern terminus at the US–Canada border. The road continues north as Autoroute 55 in Quebec, Canada.

References

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