Quebec Route 243

Route 243 is a north/south highway on the south shore of the Saint Lawrence River. Its northern terminus is in Saint-Félix-de-Kingsey at the junction of Route 255 and its southern terminus is in the township of Potton where it crosses the Canada–US border at the North Troy-Highwater Border Crossing into Vermont and becomes Vermont Route 243. Route 243 is not a busy highway as it does not go through big towns.

Route 243
Route information
Maintained by Transports Québec
Length	122.5 km[1] (76.1 mi)
Major junctions
South end	VT 243 at North Troy, Vermont
	Route 116 / Route 143 in Richmond A-55 in Melbourne Route 112 in Waterloo A-10 / Route 104 in Brome Lake
North end	Route 255 in Saint-Félix-de-Kingsey
Highway system
Quebec provincial highways Autoroutes List Former ← Route 241 Route 245 →

The highway has three concurrencies:

• In Richmond, it shares a bridge across the Saint-François River with Route 116 and Route 143
• At Racine a 2 km concurrence with Route 222 occurs.
• In Waterloo it runs concurrently first with Route 112, then both it and Route 241 as all three share a bridge across the North Yamaska River