CO 257 to close Monday for shoofly removal and completion of bridge over Little Thompson River

May 31, 2018 - Northeastern Colorado/CDOT Region 4 - CO 60 bridge was opened earlier this month; CO 257 closed for four weeks


MILLIKEN— Earlier this month, crews opened the new bridge on Colorado Highway 60 over the Little Thompson River. Through all of this work, CO 257 bridge was also being built and the road remained open by using a diversion structure.  

On Monday, the process of tying in the new bridge to the existing road will begin which will mean the road will be closed for four weeks to do just that.

Use of a shoofly diversion structure began in mid-January and diverted traffic north of the bridge over Little Thompson River and return traffic back onto CO 257 south of the bridge. Through use of the shoofly diversion structure live traffic was able to be maintained on CO 257 throughout most of the construction and allowed crews to continue work on CO 60 and CO 257 simultaneously, cutting at least three months off the construction time. The shoofly structure will be closed and demolished to allow crews to complete bridge construction on CO 257.

Closure of the roadway is necessary to allow crews to safely complete the bridge, including installation of guardrail, bridge deck, tying into the roadway, paving and striping.  

Travelers can expect traffic impacts and delays on Co 257 during the roadway closure. CDOT’s suggested detour from CO 257 is to take CR 52 west to CR 17, CR 17 south to CR 50, west on CR 50 to CR 13 and then south to CO 60.

Construction hours for the bridge replacement project are from 7 a.m. to 5 p.m. Monday through Friday, with some Saturday work as needed. All work is weather-dependent, and schedule is subject to change.

Road and lane closures will continue to be communicated through weekly alerts using CDOT’s email and text alert service, as well as through local media. To sign up for alerts, visit the project website at


For questions or concerns, call the project information line at 970-532-9998.