| Route 139 | ||||
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| Route information | ||||
| Maintained by Transports Québec | ||||
| Length: | 124.1 km (77.1 mi) | |||
| Major junctions | ||||
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| North end: |
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| Location | ||||
| Counties: | Brome-Missisquoi / La Haute-Yamaska / Acton / Drummond | |||
| Highway system | ||||
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Route 139 is a north/south highway on the south shore of the Saint Lawrence River. Its northern terminus is in Saint-Nicéphore, now part of Drummondville, at the junction of Route 143, and the southern terminus is in Abercorn at the border with Richford, Vermont at the Richford-Abercorn Border Crossing.