The Project

The Government of Canada is building a new bridge to replace the Champlain Bridge in Montreal. This bridge will cross the St. Lawrence River and will link the Island of Montreal to the South Shore, passing through île des Soeurs. This is the busiest crossing in Canada for cars, trucks and buses, and is vital to the regional and national economies.

Map showing the new bridge for the St. Lawrence corridor from Autoroute 10 on the South Shore to Autoroute 15 on the Island of Montreal.

Large aerial image of the new bridge for the St. Lawrence corridor

The project includes:

A. Building the New Bridge for the St. Lawrence

Aerial image showing the St. Lawrence River.

This image may include copyrighted material from DigitalGlobe, Inc.; the Communauté métropolitaine de Montréal ; and Google Earth. - All rights reserved.

The new bridge for the St. Lawrence will be located downstream from the existing Champlain Bridge. It will begin at île des Soeurs bridge (Montreal's Verdun borough), cross the St. Lawrence River and St. Lawrence Seaway, and will end in the City of Brossard on the South Shore. It has been suggested that the best design for the bridge would be three lanes in each direction for vehicles and the possibility of a fourth lane in each direction for public transit. However, it is still too early to confirm the final bridge design.

B. Changing the route of Highway 10 on the South Shore so that it aligns with the new bridge

Aerial image showing the portions of Autoroute 10

This image may include copyrighted material from DigitalGlobe, Inc.; the Communauté métropolitaine de Montréal ; and Google Earth. - All rights reserved.

Autoroute 10 will need to be realigned with the new bridge for the St. Lawrence. The existing bridge access ramps on the South Shore will also need to be slightly realigned to connect with Autoroute 10.

C. Doing road work on île des Soeurs

Aerial image of Nuns’ Island.

This image may include copyrighted material from DigitalGlobe, Inc.; the Communauté métropolitaine de Montréal ; and Google Earth. - All rights reserved.

Work on île des Soeurs will consist of changes to Autoroute 10, to the access ramps of both the new bridge for the St. Lawrence and the île des Soeurs bridge, and to local roads. Access ramps to and from île des Soeurs will also need to be aligned with the new bridge. Additional work may also be required to accommodate public transit.

D. Building a new île des Soeurs bridge

Aerial image showing Nuns’ Island Bridge between the island and the North Shore.

This image may include copyrighted material from DigitalGlobe, Inc.; the Communauté métropolitaine de Montréal ; and Google Earth. - All rights reserved.

Jacques Cartier and Champlain Bridges Incorporated (JCCBI) will build a temporary structure next to the existing île des Soeurs bridge. It will be in place until the île des Soeurs bridge is permanently replaced as part of the project to build the new bridge for the St. Lawrence.

E. Reconstructing and widening the federal section of Highway 15

Aerial image showing the portions of Autoroute 15.

This image may include copyrighted material from DigitalGlobe, Inc.; the Communauté métropolitaine de Montréal ; and Google Earth. - All rights reserved.

The reconstruction and widening of Autoroute 15 will be done on the federal portion of Autoroute 15 between the île des Soeurs bridge and the Atwater Avenue exit/access. Adding a third lane in each direction will provide continuity with the three lanes between the Turcot Interchange and the new bridge for the St. Lawrence. Work will also be required on several access ramps in the Atwater and île des Soeurs bridge areas. Jacques Cartier and Champlain Bridges Incorporated (JCCBI) is replacing three overpasses which will be used by traffic to access the current and future bridge.

F. Deconstructing the existing Champlain and île des Soeurs bridges

The deconstruction of the existing bridges will likely proceed once the new bridges are built. St. Lawrence Seaway operations and environmental restrictions will be taken into account.