| Route information | ||||
|---|---|---|---|---|
| Maintained by Transports Québec | ||||
| Length | 69.8 km (43.4 mi) | |||
| Major junctions | ||||
| South end | ||||
| North end | ||||
| Location | ||||
| Country | Canada | |||
| Province | Quebec | |||
| Highway system | ||||
| ||||
Route 201 is a north/south provincial highway within the Canadian province of Quebec, running between Route 202 in Franklin (near the Canada–US border) and Route 342 in Rigaud. Its total length is approximately 70 kilometres.
Route 201 links Salaberry-de-Valleyfield with Autoroute 20 using the Monseigneur Langlois Bridge to cross the Saint Lawrence River. It is among the five primary or secondary highways to cross the river, the others being the 138, the 112, the 134, and the 175. It is also the only 200 series highway to be partly north of the river.

| RCM | Location | km | mi | Destinations | Notes | |
|---|---|---|---|---|---|---|
| Le Haut-Saint-Laurent | Franklin | 0.0 | 0.0 | R-201 southern terminus | ||
| 2.4 | 1.5 | |||||
| Saint-Chrysostome | 13.6 | 8.5 | South end of R-138 concurrency | |||
| 14.8 | 9.2 | North end of R-138 concurrency | ||||
| Beauharnois-Salaberry | Saint-Stanislas-de-Kostka – Saint-Louis-de-Gonzague boundary | 23.8 | 14.8 | |||
| Saint-Stanislas-de-Kostka | 29.6 | 18.4 | South end of R-132 concurrency | |||
| Canal de Beauharnois | 30.3– 31.3 | 18.8– 19.4 | Pont Larocque (Larocque Bridge) | |||
| Beauharnois-Salaberry | Salaberry-de-Valleyfield | 31.6 | 19.6 | At grade; A-530 western terminus; west end of A-530 concurrency | ||
| 36.5 | 22.7 | A-530 exit 5; east end of A-530 concurrency | ||||
| 37.5 | 23.3 | North end of R-132 concurrency | ||||
| St. Lawrence River | 43.3– 45.4 | 26.9– 28.2 | Pont Monseigneur-Langlois (Monseigneur Langlois Bridge) | |||
| Vaudreuil-Soulanges | Coteau-du-Lac | 45.4 | 28.2 | Chemin du Fleuve | Interchange; northbound exit and southbound entrance | |
| 46.0 | 28.6 | Interchange | ||||
| 46.9 | 29.1 | Interchange; A-20 exit 14; south end of A-20 concurrency | ||||
| 49.6 | 30.8 | Interchange; A-20 exit 17; north end of A-20 concurrency | ||||
| Saint-Clet | 56.7 | 35.2 | ||||
| Rigaud | 69.4 | 43.1 | Interchange; A-40 exit 17 | |||
| 69.8 | 43.4 | R-201 northern terminus | ||||
1.000 mi = 1.609 km; 1.000 km = 0.621 mi
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