A bridge over the Winnipeg River built in the 1930s outside Lac du Bonnet has been reduced to one lane due to corrosion on some of its supporting girders.
The partial closure of the Provincial Road 313 bridge resulted in delays of 20 minutes or more this weekend for cottagers and other traffic.
Traffic on the narrow bridge — nicknamed the Skinny Bridge — is now restricted to the south side lane, said Ron Weatherburn, executive director of the engineering and operations division of construction and maintenance for the province.
Temporary lights now tell motorists going east and west when they can cross.
The "structural deficiency" was found last week during a routine inspection, Weatherburn said.
Engineers are now determining the best course of action to repair the bridge, he added.
He also said officials will fine tune the temporary traffic light system to reduce the traffic tie-ups seen this past weekend.
"People will see it improved drastically next weekend," Weatherburn said.
The bridge connects Lac du Bonnet to Pointe du Bois to PR 315 and PR 314, which lead into Nopiming Provincial Park.
The partial closure is the latest case in Manitoba in which aging bridges have had to be closed due to structural problems.