La Fontaine tunnel closing Friday night for repairs
Posted March 17, 2025 10:14 pm.
Drivers in Montreal can expect night closures in both directions of Highway 25, including the Louis-Hippolyte-La Fontaine tunnel, during the weekend of March 21.
The ramp leading from Highway 40 westbound to Highway 25 southbound will also be closed from Friday night into Saturday.
These closures are required to carry out work related to the tunnel’s electrical and communication systems. Maintenance work is also planned on Highway 25.
A complete closure of Curatteau Street between Notre-Dame Street and access from exit 3 (Notre-Dame Street/Hochelaga Street) of Highway 25 northbound is also planned during the nights of Thursday to Friday and Sunday to Monday, from 9 p.m. to 5 a.m.
Night closures – Weekend of March 21
Friday to Saturday night, from 11 p.m. to 8 a.m.
Highway 25 toward the South Shore
Complete closure of Highway 25 toward the South Shore (including the Louis-Hippolyte-La Fontaine tunnel) between exit 5 and the entrance from Charron Island.
- The entrances to this section will be closed 30 minutes before the highway is completely closed.
- Souligny Avenue eastbound, between Dickson and Honoré-Beaugrand streets, will be closed 30 minutes before the highway is completely closed.
Anjou Interchange
Complete closure of the ramp leading from Highway 40 westbound to Highway 25 southbound.
Highway 25 toward Montreal
Complete closure of Highway 25 toward Montreal (including the Louis-Hippolyte-La Fontaine Tunnel) between exit 90 and the entrance from Hochelaga Street.
- The entrances to this section will be closed 30 minutes before the highway is completely closed.
Saturday to Sunday night, from 11 p.m. to 9 a.m.
Highway 25 toward the South Shore
- Complete closure of Highway 25 toward the South Shore (including the Louis-Hippolyte-La Fontaine tunnel) between exit 4 – Montréal (downtown) / Pont J.-Cartier and the entrance from Île Charron.
- The entrances to this section will be closed 30 minutes before the highway is completely closed.
- Souligny Avenue eastbound, between Dickson and Honoré-Beaugrand streets, will be closed 30 minutes before the highway is completely closed.
Highway 25 toward Montreal
Complete closure of Highway 25 toward Montreal (including the Louis-Hippolyte-La Fontaine Tunnel) between Exit 90 and the entrance from Hochelaga Street.
- The entrances to this section will be closed 30 minutes before the highway is completely closed.
In the event of adverse weather conditions or operational constraints, these interventions may be postponed.
You can consult quebec511.info before hitting the road or to call 511 to find out about closures on the network and plan your trips.
