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The main CN Rail line runs through peninsular Halifax in a below grade rail-cut with numerous concrete arch road bridges crossing overhead. Many of these bridges are in poor condition and in need of extensive rehab work or replacement.

100-year-old, four-lane bridge under Quinpool Road

One of the more notable spans is the 100-year-old, four-lane bridge under Quinpool Road — one of two main thoroughfares connecting the peninsula to the Armdale Roundabout and the City’s Mainland South districts. A 4.5-month road closure and rehab project was planned for this bridge, but the water and waste water pipes that ran through it could not be accommodated in the rehab design. A separate utility bridge was required before the rehab project could begin.

Algonquin Bridge won the contract to design and supply a 45 m galvanized steel span with a maintenance access walkway.

Structure was pre-purchased by owner to help accelerate timeline
The closure of Quinpool Road was timed to coincide with the university summer season, when traffic would be lighter. It was set to begin on April Fools’ Day, but it was no laughing matter for the 25,000+ motorists crossing the bridge every day who now had to find alternate routes.

Pipe bridge stored in park adjacent to site

The owner, Halifax Water, ordered the bridge ahead of time and stored it in the adjacent park to be sure it was ready for their winter project to install the span and divert the utility lines across it.

Pipe bridge part of Halifax’s Quinpool Road rail overpass rehab

As usual, the Algonquin Bridge team was flexible and accessible throughout the project phases. We provided a lot of information ahead of time to the engineering consultant, Hatch, including preliminary bridge reactions. The contractors were actually bidding on the installation tender as we were fabricating the bridge at our Thorndale, Ontario plant. We were able to provide support and answer any questions. Our bridge and the rerouted utility lines were completed on schedule and the main concrete arch rehab project was able to start on time.

Tower Road Bridge

Algonquin is becoming very familiar with the Halifax rail cut bridges. We supplied a similar utility pipe bridge at Tower Road over ten years ago and we will be providing temporary bridges for two more rail cut bridge rehab projects in the year ahead.

Project Details

Project Name: Quinpool Road Utility Bridge
Location: Halifax, Nova Scotia
Owner: Halifax Water
Engineer: Hatch
Contractor: Atlantic Road Construction and Paving 
Sector: Public Works
Application: Stream Crossing
Product: Prefabricated Utility Bridge
Dimensions: Span 45 m, Width 2.5 m
Installation Time: Two Days

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