 Route 129 | ||||
|---|---|---|---|---|
 Route 129 highlighted in red | ||||
| Route information | ||||
| Maintained by MassDOT | ||||
| Length | 34.08 mi[1] (54.85 km) | |||
| Existed | 1920s–present | |||
| Major junctions | ||||
| West end |   Route 4 / Route 110 in Chelmsford | |||
| East end |  Route 114 in Marblehead | |||
| Location | ||||
| Country | United States | |||
| State | Massachusetts | |||
| Counties | Middlesex, Essex | |||
| Highway system | ||||
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Route 129 is a 34.08-mile-long (54.85 km) east–west Massachusetts state route that runs from Route 4 and Route 110 in Chelmsford to Route 114 in Marblehead. Along the way it intersects several major highways including U.S. Route 3 (US 3) in Chelmsford, Interstate 93 (I-93) in Wilmington, I-95 and Route 128 in Wakefield, and US 1 in Saugus and Lynnfield.