Between 1922 and 1935, most of the current routing of US 302 from Portland, Maine west to its intersection with New Hampshire Route 18 in Littleton was designated as New England Interstate Route 18.
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US 302 enters the state of New Hampshire at a two-lane arch bridge over the Connecticut River beginning in Wells River, Vermont.
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U.S. Route 302 (US 302) crosses the northern part of New Hampshire, entering the state by bridging the Connecticut River from Wells River, Vermont, following the Ammonoosuc River into the White Mountains, passing through Crawford Notch and following the Saco River out of the mountains to Fryeburg, Maine.
Hampshire | New Hampshire | Stockbridge, Hampshire | Concord, New Hampshire | Hampshire County Cricket Club | U.S. Route 66 | Exeter, New Hampshire | Manchester, New Hampshire | U.S. Route 1 | Hanover, New Hampshire | Portsmouth, New Hampshire | Andover, Hampshire | University of New Hampshire | U.S. Route 6 | U.S. Route 101 | Route 66 | U.S. Route 30 | New Jersey Route 4 | Keene, New Hampshire | European route E65 | U.S. Route 40 | California State Route 1 | U.S. Route 1 in Maine | Pennsylvania Route 309 | European route E18 | U.S. Route 23 | Peterborough, New Hampshire | Hambledon, Hampshire | Goffstown, New Hampshire | European route E4 |