Quebec Route 340
| Route information | ||||
|---|---|---|---|---|
| Maintained by Transports Québec | ||||
| Length | 40.2 km (25.0 mi) | |||
| Major junctions | ||||
| West end | County Road 18 at South Glengarry, Ontario | |||
| R-325 in Saint-Telesphore R-201 in Saint-Clet R-342 in Vaudreuil-Dorion A-30 in Vaudreuil-Dorion | ||||
| East end | A-20 in Vaudreuil-Dorion | |||
| Location | ||||
| Country | Canada | |||
| Province | Quebec | |||
| Highway system | ||||
| 
 | ||||
Route 340 is a provincial highway situated in the Montérégie region of Quebec west of Montreal. It runs for just over 40 kilometers from the Ontario-Quebec border in Saint-Télesphore (as a continuation of Stormont, Dundas and Glengarry County Road 18) and ends in Vaudreuil-Dorion at the junction of Autoroute 20.