Route 343 is a provincial highway located in the Lanaudière region of Quebec.

It runs from Route 138 west of Saint-Sulpice and south of Autoroute 40 and ends at the junction of Route 347 east of Saint-Come and north of Saint-Alphonse-Rodriguez where it has a concurrency with Route 337.

This Quebec road, road transport or highway-related article is a stub.

You can help Wikipedia by expanding it.