Nighttime construction work at the Interstate 35/East First Street interchange (exit 92) project in Ankeny will require alternating lane closures from 9 p.m. to 6 a.m. Sundays through Thursdays beginning Monday, Aug. 21, until late 2020, weather permitting, according to the Iowa Department of Transportation’s Grimes construction office

This first stage of this project involves building temporary pavement in order to maintain traffic during the three-year project. The reconstructed interchange will be completed in late 2020.

The Iowa DOT reminds motorists to drive with caution, obey the posted speed limit and other signs in the work area, and be aware that traffic fines for moving violations are at least double in work zones. As in all work zones, drivers should stay alert, allow ample space between vehicles, and wear seat belts.