 New Hampshire Route 128 | ||||
|---|---|---|---|---|
 Map of southern New Hampshire with NH 128 highlighted in red | ||||
| Route information | ||||
| Maintained by NHDOT | ||||
| Length | 16.059 mi[1] (25.844 km) | |||
| Major junctions | ||||
| South end | Mammoth Road in Dracut, MA | |||
 NH 111 in Windham NH 102 in Londonderry | ||||
| North end |  NH 28 in Londonderry | |||
| Location | ||||
| Country | United States | |||
| State | New Hampshire | |||
| Counties | Hillsborough, Rockingham | |||
| Highway system | ||||
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New Hampshire Route 128 (abbreviated NH 128) is a 16.059-mile-long (25.844 km) north–south highway in southeastern New Hampshire. NH 128 runs from the Massachusetts border in Pelham northward to Londonderry, south of Manchester. NH 128 is named Mammoth Road throughout its entire length.
The southern terminus of NH 128 is at the Massachusetts state line in the town of Pelham, where the road continues into Massachusetts as an unnumbered road in the town of Dracut. The road, however, is still named Mammoth Road in Dracut. The northern terminus is at New Hampshire Route 28 in Londonderry. Mammoth Road continues northward along NH 28 and then New Hampshire Route 28A.