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Estimated time to cross the structure

The Honoré Mercier Bridge is co-managed by the provincial government (MTQ) and JCCBI.

Traffic flow indicators show the estimated time it takes to cross the structure. The zones highlighted in blue on the map are the responsibility of JCCBI.

For MTMD hindrances, we invite you to consult Québec511.
Honoré Mercier Bridge
Toward Montréal:
Toward South Shore:
No hindrance in progress
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Planned hindrances

entrave
Wed
29 Jul
entrave
Thu
30 Jul
Fri
31 Jul
Sat
01 Aug
Sun
02 Aug
Mon
03 Aug
Tue
04 Aug
Wed
05 Aug
Thu
06 Aug
Fri
07 Aug
Sat
08 Aug
Sun
09 Aug
Mon
10 Aug
Tue
11 Aug
Closure
From July 29, 10:00 pm to July 30, 5:00 am Night closure of access and exit ramps of the Honoré Mercier Bridge See detour map
Closure
From July 29, 10:00 pm to July 30, 5:00 am Night closure of access and exit ramps of the Honoré Mercier Bridge See detour map

Work advisories

Honoré Mercier Bridge | Night closure of access and exit ramps of the Honoré Mercier Bridge, on July 29
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Honoré Mercier Bridge

Honoré Mercier Bridge

The Honoré Mercier Bridge, which is co-managed by the provincial government and JCCBI, serves as an example for collaboration with the Mohawk Council of Kahnawà:ke and the expertise of Mohawk contractors. The Bridge crosses the St. Lawrence River and the seaway, on the west side of the Island of Montreal.

Learn More History

Other structures

Jacques Cartier Bridge
Bonaventure Sector
Melocheville Tunnel
Original Champlain Bridge

Normal traffic lane configuration

Weekdays

Mornings from 5:30 a.m. to 9:30 a.m.

  • Continuously: one lane open from Châteauguay
  • Alternating (traffic lights): one lane open from Châteauguay or from La Prairie
  • Two lanes open towards the South Shore

Daytime, evenings, nights, and weekends 

  • Two lanes open towards the South Shore
  • Two lanes open towards Montreal (one from Châteauguay and one from La Prairie)

Traffic is managed by the provincial government.

Discover the Honoré Mercier Bridge
Normal traffic lane configuration

Latest news

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2
Green Space Development in Kahnawà:ke
Green Space Development in…
25 June 2026
JCCBI is pleased to announce that work to develop a piece of land in Kahnawà:ke, near the Honoré Mercier…
Read more
3
Work, inspections and studies on the Québec Bridge: an update from JCCBI
Work, inspections and studies…
14 May 2026
This morning, at a media briefing in Québec City, The Jacques Cartier and Champlain Bridges Incorporated …
Read more
4
The project to deconstruct the Original Champlain Bridge receives Envision Gold Recognition
The project to deconstruct…
17 June 2026
The Jacques Cartier and Champlain Bridges Incorporated (JCCBI) is very proud to announce that the project to…
Read more
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