US 6 & US 385 Bridge Replacements
About the Project
During the 2025 construction season, crews constructed three shoo-fly detours to temporarily divert traffic while the existing bridges were demolished and new structures were built. In addition, a new culvert was installed at the bridge north of Holyoke on US 385 at Mile Point 291 to improve water flow.
The three bridge replacements that began during the 2025 season include:
- US 6 east of County Road 37, MP 453
- US 385 south of Colorado Highway 23, MP 279
- US 385 south of CR 4, MP 291
Construction will resume in March 2026. Crews will complete the remaining work at the three bridges that began construction in 2025. This work includes culvert installation, paving, and removal of the shoo-fly detours.
Crews will also begin replacing bridge structures at the following locations:
- US 6 west of CR 41, MP 454
- US 6 west of CR 43, MP 455
This work will include constructing shoo-fly detours at both locations to allow traffic to bypass active work zones. The existing bridges will be demolished and replaced with new structures.
The US 6 and US 385 Bridge Replacement Project is anticipated to be completed in October 2026.
Traffic Impacts Next Season
Working hours are sunup to sundown, Monday through Friday.
- Flaggers will be in place to guide traffic through alternating lane closures during working hours.
- A speed reduction will be in place at each bridge location to ensure the safety of motorists and crews.
- A 12-foot width restriction and 73.5-foot length restriction will be in place.
- Construction vehicles will be entering and exiting the work zones.
*The work schedule is weather-dependent and subject to change.
Project Benefits
- Updated structures will have a lifespan of up to 100 years, minimizing the need for frequent maintenance and repairs
- Replacing aging bridges will enhance safety for Colorado’s traveling public
- Addresses challenges posed by deteriorating infrastructure, including bridges that may no longer meet modern safety standards
Work this Week & Lane Closures on US 6 & US 385
Project Facts
- Construction Cost: $20 Million
- Contractor: WW Clyde
- Timeline: March 2025 to October 2026
- Location: US 6 and US 385
- Nearest Town/City: Holyoke
- Mile Point(s):
- MP 453, 454 and 455 on US 6
- MP 291 and 279 on US 385
- County: Phillips
Work Schedule
- Daytime work hours range from 6:30 a.m. to 7 p.m., Monday through Friday
Traffic Impacts
Motorists can expect the following impacts during the period of construction:
- US 385 at Mile Point 279 near Holyoke:
- To maintain traffic flow during bridge construction, a 24/7 shoo-fly detour with two-lane traffic is in effect allowing motorists to bypass active construction sites
- There will be a speed reduction of 25 MPH through the work area
- US 385 at MP 291 north of Holyoke toward Julesburg:
- Motorists can anticipate alternating lane closures guided by flaggers and short delays while crews prepare to construct the detour
- There will be a speed reduction of 40 MPH through the work area
- US 6 at MP 453 near County Road 37 west of Holyoke:
- To maintain traffic flow during bridge construction, a 24/7 shoo-fly detour with two-lane traffic is in effect allowing motorists to bypass active construction sites
- There will be a speed reduction of 35 MPH through the work area
- Flaggers will be in place to guide traffic during working hours
- A 12-foot width restriction and 73.5-foot length restriction will be in place
- Construction vehicles will be entering and exiting the work zones
- Refer to COtrip.org for real-time travel conditions and road closures
