Louis-Hippolyte-La Fontaine tunnel to close Saturday night for maintenance

Vehicles enter and exit the Louis-Hippolyte-La Fontaine tunnel on the south shore of Montreal, Monday, Jan. 2, 2023. THE CANADIAN PRESS/Graham Hughes

By Cole Fortner

Posted March 31, 2025 6:50 pm.

Highway 25 and the Louis-Hippolyte-La Fontaine tunnel will be closed overnight this coming weekend.

Transport Quebec says the closure will include all lanes in both directions starting at 11 p.m. on Saturday, before being reopened at 9 a.m. on Sunday, to allow for maintenance and inspection work to take place.

Map of Highway 25 during the night of April 5 to 6 (CNW Group/Ministry of Transport and Sustainable Mobility)

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Highway 25 will be completely closed between exit 4 and the entrance from Île Charron heading toward the South Shore.

Additionally, the highway will also be closed toward Montreal between exit 90 and the entrance from Hochelaga Street.

Map of the tunnel closure during the night of April 5 to 6 (CNW Group/Ministry of Transportation and Sustainable Mobility)

All entrances to the highway in the affected area will close 30 minutes prior to the scheduled time to allow for traffic to clear.

Transport Quebec notes the closure could be postponed due to poor weather.

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