BROOMFIELD - If you are driving between Denver and Boulder during the next 12 nights, you might want to find another way.

U.S. 36 will shut down at Wadsworth Boulevard overnight so crews can install a total of 39 bridge girders.

The girders will serve as the substructure the boulevard's eventual crossing over the highway.

Eastbound U.S. 36 at Wadsworth will close Thursday night at 9 p.m. until 5:30 a.m. Both east and westbound lanes will close Friday night from 9 p.m. until 5:30 a.m.

Crews expect to finish their work April 2, weather permitting.

"We definitely want to get the word out to keep as many people away as we can," Jason Estes, construction manager for Ames/Granite Joint Venture, which is the design-build contractor for the project, said.

Traffic will divert to the off-ramps at Wadsworth, Estes said. The girder project is one of five major bridge projects along the US 36 corridor this spring and summer.

Two of the bridges at Wadsworth Boulevard and 112th Avenue will undergo complete renovation.

The complete U.S. 36 project will wrap up in January 2015.