Two lanes of the Trans-Canada Highway south of Wawa were reopened after being washed out last week.
Wawa Mayor Linda Nowicki says all sections of the road should be reopened by Wednesday.
One lane of the southbound stretch of Highway 17 to Sault Ste. Marie was reopened Sunday. The northbound lanes of the highway are expected to remain closed for another week as crews repair 15-metre holes in the road.
Nowicki says a partial evacuation began Saturday afternoon for a First Nation community just outside Wawa that saw its only road connection destroyed.
Twenty-five members vulnerable members of the Michipicoten First Nation, such as the elderly and those with medical conditions, are being taken out of the community.
Mayor Nowicki says it came as a shock to see the highway washed away by floods.
"This is a one in a 100 year thing," she said, adding the road was in good condition until the deluge.
"This is just a freak storm that lasted too long and came too quickly."