Construction workers west of Bozeman got back to work Monday on the East Belgrade Interchange Project.
The project aims to ease congestion and access to Belgrade and Bozeman Yellowstone International Airport when it's complete.
During this phase of construction, commuters on Interstate 90 will be detoured through new on/off ramps constructed in Fall of 2013.
The detours will allow crews to begin connecting the north and south sides of the project and start construction on two bridges over the interstate.
During construction highway speeds will be reduced to 35 mph in the work zone. Drivers are urged to use caution and watch for work crews and equipment.
The detours are expected to be in place through Spring and Summer.