Starting Thursday, Sept. 16 motorists will encounter a right lane closure on northbound Highway 169 along the Minnesota River south of Saint Peter as crews work to install riprap (rocks) to prevent erosion in this area, according to the Minnesota Department of Transportation.

Riprap will also be installed on southbound Highway 15 along the Cottonwood River south of New Ulm starting Monday, Sept. 27th requiring a closure of the right lane.

The projects are expected to be complete by Oct. 30.