Government of New Brunswick

The Department of Transportation and Infrastructure has completed work to widen the Route 15 underpass to four lanes and incorporate active transportation features for pedestrians, bicycles and other users. In 2018, work included the construction of tear-drop shaped roundabouts at both ramp terminals to create what is commonly referred to as a “dogbone” interchange. This configuration will reduce conflict, queueing and delays.

In conjunction with the work at Harrisville Boulevard, the Department of Transportation and Infrastructure also constructed a new eastbound exit ramp from Route 15 to Industrial Street, Dieppe.

This project will improve safety and traffic flow. All users will benefit from the wider, four-lane underpass, reconfigured ramp terminals and newly incorporated active transportation facilities. These upgrades to one of the province’s busiest arterial highways will reduce greenhouse gas emissions resulting from congestion and enhance travel for all commuters.

This project was funded jointly by the provincial and federal governments. The Government of New Brunswick has committed $8.1 million and the Government of Canada has committed $5.7 million. Work was completed in the fall of 2018.

Strategic investments in infrastructure are a key element of the multi-year New Brunswick Economic Growth Plan, government’s framework to grow the economy and create jobs.

The drawing below shows the configuration of the new interchange.

The drawings below provide examples of traffic movements through the interchange. (Click on image for a larger version.)


• To downtown Moncton
• Left turn from Dieppe to downtown Moncton
• From Dieppe


• To Dieppe
• Left turn from Shediac to Dieppe
• From Shediac


• To Dieppe
• Straight through from Harrisville Blvd. to Dieppe
• From Harrisville Blvd.