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Bridge replacement at Dunlop St., Hwy. 400 to start next year: MTO

Bridge and interchange work expected to take around four years to complete, says ministry; Bayfield Street bridge to follow in 2026
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This recent file photo shows work around the Dunlop Street bridge near Highway 400 in Barrie.

Barrie’s Highway 400 bridge replacements are running smoothly.

The Ministry of Transportation of Ontario (MTO) says it has retained consulting engineers Egis to complete the detail design and class environmental assessment study for the replacement of the Highway 400/Dunlop Street bridge and reconstruction of the Highway 400/Dunlop Street interchange in the city.

Next year the MTO will begin this bridge project, which will include the replacement of the Dunlop Street bridge and reconfiguration of the Dunlop Street/Highway 400 interchange. It will take approximately four years to complete.

The project also includes pavement resurfacing of Highway 400 from south of Dunlop Street to south of Sunnidale Road, Highway 400 median barrier replacement, drainage improvements, culvert replacements and the installation of a noise wall in the vicinity of the Dunlop Street to Highway 400 northbound on-ramp. 

The MTO says it also plans to replace the Bayfield Street bridge over Highway 400, as well as its on- and off-ramps, starting in 2026. The project’s limits will stretch from Grove to Coulter streets, and widening Bayfield Street to seven lanes. The MTO says it requires the city to build corresponding transportation improvements on Bayfield, from Coulter Street to Cundles Road.

Work on the Essa Road and Sunnidale Road bridges is also approaching the finish lines.

The MTO has said the replaced Sunnidale Road bridge will be two lanes, with its north side having a two-metre-wide sidewalk, which can accommodate any future bicycle lanes, should the City of Barrie choose to build them.

The MTO is currently rehabilitating the Highway 400 corridor from south of Sunnidale Road to north of Bayfield Street. Work includes replacing the existing Sunnidale Road underpass with a wider structure to accommodate the future widening of Highway 400 to a 10-lane cross section, sewer work and Highway 400 pavement rehabilitation, including Bayfield Street and interchange ramps.

The construction contract awarded was for $41.4 million, its costs are shared between the MTO and the city, and it’s scheduled to be complete by this year’s end.

The MTO is also constructing a new interchange at Essa Road and Highway 400. This work includes significant roadwork on Highway 400, between Harvie Road and Tiffin Street.

The project’s construction phase began in June 2022 and is anticipated to be completed by the fall of 2025.

The construction contract’s value for the Essa Road bridge replacement project is $105.4 million. Costs are shared between MTO and the City of Barrie.

Work being done includes replacing the Highway 400 bridge at Essa Road to accommodate the future widening of Highway 400 to a 10-lane cross-section, widening Essa Road from four to six lanes between the Bryne Drive/Ardagh Road intersection, at the west end, and the Fairview Road intersection, at the east end, with the addition of a multi-use pathway on the north side of Essa Road.

The Highway 400/Essa Road interchange is being reconstructed, including the addition of a dedicated ramp from eastbound Essa Road to southbound Highway 400, and a new bridge to allow the ramp to cross the commercial access road in the southwest quadrant of the interchange.

There’s also the replacement of traffic signals at the new ramp terminals, storm sewer replacement, culvert extension, stormwater management measures, pavement rehabilitation and safety upgrades.

The project’s construction phase began in June 2022 and is anticipated to be completed by the fall of 2025.

For more information on local bridge projects, click here