Drivers on Interstate 35 near West Des Moines should be prepared to deal with some construction traffic.
The DOT will begin construction on new southbound lanes between the West Mixmaster and Raccoon River Bridge on Monday.
The existing northbound lanes will be used to maintain traffic flow.
Part of the project includes reconstructing the Grand Avenue interchange which requires closing both ramps and loops west of I-35 at Grand Avenue beginning April 14.
Only northbound access to I-35 from Grand Avenue will be available.
The project is expected to be complete by November.