 New Hampshire Route 18 | ||||
|---|---|---|---|---|
 Map of Grafton County in northwestern New Hampshire with NH 18 highlighted in red | ||||
| Route information | ||||
| Maintained by NHDOT | ||||
| Length | 20.116 mi[1] (32.374 km) | |||
| Existed | 1922–present | |||
| Major junctions | ||||
| South end |   I-93 / US 3 in Franconia | |||
| North end |  VT 18 in Waterford, VT | |||
| Location | ||||
| Country | United States | |||
| State | New Hampshire | |||
| Counties | Grafton | |||
| Highway system | ||||
| ||||
| ||||
New Hampshire Route 18 is a 20.116-mile-long (32.374 km) state highway in northwestern New Hampshire. It is a local road serving Franconia, Bethlehem, and Littleton, New Hampshire, which I-93 bypasses. Its northern extension, Vermont Route 18, continues northward from the Connecticut River to St. Johnsbury, Vermont. NH 18 closely parallels I-93 for its entire length and has several interchanges with the Interstate highway.