Cedar Falls is widening West Viking Road, between Westminster Drive and Hudson Road from a two-lane to a four-lane road. Road crews are also adding a passing lane for bike trails that are part of the Cedar Prairie Trail and Prairie Lakes Trail.
Construction began on Aug. 13, according to the city.
The project itself has 90 days, but can be closed for 60 calendar days, said Michelle Sweeney, project manager.
Sweeney said the construction contract is worth $1.6 million.