| Route 338 | ||||
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| Route information | ||||
| Maintained by Transports Québec | ||||
| Length: | 40.9 km (25.4 mi) | |||
| Major junctions | ||||
| West end: | SD&G County Road 2 in South Glengarry, Ontario | |||
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| East end: |
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| Location | ||||
| Counties: | Vaudreuil-Soulanges | |||
| Major cities: | Coteau-du-Lac, Vaudreuil-Dorion | |||
| Highway system | ||||
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Route 338 is a provincial highway located in the Montérégie region of Quebec west of Montreal. The highway runs from the Ontario Border near Rivière-Beaudette as a continuation of Stormont, Dundas and Glengarry County Road 2 and ends at Vaudreuil-Dorion at the junction of Autoroute 20 which the 338 acts as an alternate and service route parallel to A-20 although through several villages along the Saint Lawrence River. Before the 1970s, this road was named "Route 2", as part of an interprovincial Route 2 that stretched from Windsor, Ontario to Halifax, Nova Scotia.