Work on the access ramps, to and from the Champlain Bridge from Highway 15, begins tomorrow night and will trigger some significant closures over the next few days. 

The north and southbound lanes of Highway 15 near the bridge will both be closed down, on different nights, this weekend. 

Tomorrow, the northbound lane shuts down at 11 p.m. Traffic will be redirected around the Bonaventure Expressway and Highway 720 on-ramps and exits.

Here's a complete list of the shut downs:

May 1

•Complete closure of the northbound Highway 15. Detour via Exit 60 of Highway 15 North via the Bonaventure Expressway and Highway 720 West from 11 p.m. to 5 a.m. 

May 2

•Complete closure of the northbound Highway 15. Detour via Exit 58 of Highway 15 North via the Bonaventure Expressway and Highway 720 West from 11 p.m. to 6 a.m. 

•Complete closure of the access ramp from Île des Sœurs to Highway 15 North from 11 p.m. to 6 a.m. 

•Complete closure of the access ramp from the Bonaventure Expressway to Highway 15 north from Exit 4 from 10 p.m. to 7 a.m. 

May 3

•Complete closure of the southbound Highway 15. Detour via Exit 60 of Highway 15 South via the Bonaventure Expressway from 11 p.m. to 7 a.m. 

•Complete closure of the Gaétan-Laberge St. access ramp to Highway 15 South (toward the Champlain Bridge) from 11 p.m. to 8 a.m. 

May 4

•Complete closure of the northbound Highway 15. Detour via Exit 58 of Highway 15 North via the Bonaventure Expressway and Highway 720 west from 10 p.m. to 5 a.m. 

•Complete closure of the access ramp from Île des Sœurs to Highway 15 north from 10 p.m. to 5 a.m. 

•Complete closure of the access ramp from Bonaventure Expressway to Highway 15 north via Exit 4 from 10 p.m. to 5 a.m. 

May 5

•Complete closure of the southbound Highway 15. Detour via Exit 60 of the Highway 15 South via the Bonaventure Expressway from 11 p.m. to 5 a.m. 

•Complete closure of the Gaétan-Laberge Street access ramp to Highway 15 South (toward the Champlain Bridge) from 11 p.m. to 8 a.m. 

All closures will be confirmed on the Champlain Bridge website throughout the weekend.