I-91 at White River Junction. Crossing the Connecticut River, US 4 enters New Hampshire. New Hampshire In the state of New Hampshire, US 4 passes through Lebanon, meeting I-89 again. It then heads southeast to Boscawen, where it briefly overlaps US 3 before joining I-93 into Concord. Turning east, US 4 briefly overlaps I-393 and for a longer stretch with US 202. Passing through Durham, US 4 joins the Spaulding Turnpike at Dover Point and travels southeast to its eastern terminus in Portsmouth at the Portsmouth Traffic Circle. History Prior to being designated US 4, the road from Whitehall, New York, eastward through Vermont was New England Route 13 (Route 13). From the Vermont–New Hampshire state line to Franklin, New Hampshire, it was the eastern extension of Route 14. From Franklin to Concord, New Hampshire, it used Route 6 (now US 3), and, from Concord to Northwood, New Hampshire, it used Route 9 (now New Hampshire Route 9 [NH 9]). Between Northwood and Dover, New Hampshire, it used a road that was previously not numbered. From Dover to its eastern terminus at Portsmouth, New Hampshire, the road used to be known as Route 16 (now NH 16). History of the terminuses 1926–1930: Glens Falls, New York, at the point where US 9 split into US 9W and US 9E, to Portsmouth, New Hampshire.1930–: East Greenbush, New York, following former US 9E, through its former west terminus, to Portsmouth, New Hampshire. Major intersections New York in East Greenbush north of East Greenbush Vermont in the Town of Rutland. The highways travel concurrently to the City of Rutland. in Hartford in Hartford. The highways travel concurrently to White River Junction. New Hampshire in Lebanon in Lebanon in Boscawen. The highways travel concurrently through the city. in Concord. The highways travel concurrently through the city. in Concord. I-393/US 4 travel concurrently to Pembroke. US 3/US 202 travel concurrently to Northwood. in Portsmouth See also East–West Highway (New England) Special routes Related routes U.S. Route 104 became NY 104 in 1972. While never directly connected to US 4, it was so designated as it was on the same latitude as US 4. References External links Endpoints of US 4 04