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CO 257 Resurfacing
US 34 Business to Walnut Street

Project Newsletter - June 28,2023

CO 257 in Windsor closed to all traffic from July 5 to Aug. 4


Colorado Highway 257 from north of Walnut Street to south of Eastman Park Drive will close for 30 days to perform major road reconstruction and complete as much work as possible before school resumes in August. From 7 a.m. on Wednesday, July 5 through 7 p.m. on Friday, Aug. 4, approximately one mile of CO 257 will close to all traffic.

The following streets will not have access to or across CO 257 during the closure: Walnut Street, Chestnut Street, Commons Drive, and Eastman Park Drive. Garden Drive will remain open to through traffic only except for periodic short closures to reconstruct the intersection. Significant travel delays are expected. Drivers should plan ahead and seek alternate routes. Access to businesses and adjacent properties will be maintained.

Two signed detour routes will be in place.
  • The local detour will direct drivers around the west side of the closure using Crossroads Boulevard, 7th Street and 1st Street.
  • Through commercial truck traffic must use Eastman Park Drive, County Road 23 and CO 392 due to size and weight restrictions on local roads.
Two signed detour routes will be in place during the CO 257 full closure. The local detour will direct drivers around the west side of the closure using Crossroads Boulevard, 7th Street and 1st Street. Through commercial truck traffic must use Eastman Park Drive, County Road 23 and CO 392.
CO 257 Full Closure Detour Map

 

Crews will work extended hours and perform some activities over the weekend to complete this work as quickly as possible. Planned work includes a complete reconstruction of the roadway section. This full closure will save several weeks of one-lane alternating traffic conditions and partial intersection closures. Any changes to the closure schedule will be posted on message boards and on the CO 257 Resurfacing project web page. 

The Colorado Department of Transportation has coordinated closing CO 257 with the Town of Windsor. During the full closure, Windsor will be able to accelerate parts of the CO 257 / Eastman Park Drive intersection project.

Project Overview


The Colorado Department of Transportation and Coulson Excavating Company are improving nearly five miles of Colorado Highway 257 between US 34 Business (Mile Point 5.6) in Greeley and Walnut Street (MP 10.4) in Windsor this year. Drivers will pass through at least two work zones and should prepare for periodic traffic delays on CO 257.

This project resurfaces CO 257 to provide a smoother driving surface and increase the longevity of the highway. Intersection improvements at Crossroads Boulevard will enhance mobility by adding a second eastbound left turn lane to northbound CO 257. Safety improvements include installing new guardrail, roadside delineators, and rumble strips. 

CO 257 was identified as a priority corridor for CDOT’s Surface Treatment Program. Funding from the program will improve drivability and highway safety on CO 257. Coulson Excavating Company was awarded the contract to construct the improvements.

Traffic Impacts


Drivers are encouraged to take alternate routes, use extra caution in the work zones, and follow all signs and markings.

Other traffic impacts include:
  • 20-day closure of CO 257 in the fall for bridge repairs at MP 7.6, which is approximately two miles north of US 34 Business
  • Various lane and shoulder closures within the project limits
  • Periodic single-lane operations with flaggers alternating traffic
  • Trucks entering and exiting various work zones
  • Temporary concrete barrier wall to separate the work zone from adjacent travel lanes at several locations
  • Work zone speed limit reduction may be in place
  • Traffic fines will be doubled in the work zone 
Weekly traffic impacts information is available on the CO 257 Resurfacing project web page.

Coordination with Adjacent Projects


CDOT will coordinate work and traffic impacts with adjacent projects. The Town of Windsor will make improvements to the CO 257 / Eastman Park Drive intersection this year. For more information on this project, please visit the town’s web page.

Stay Connected!

 
Project Webpage: codot.gov/projects/co257-34-walnut
Hotline: 970-776-5580
Email: pr@workzone.info
Text alerts: Text 257 to 866-762-3640 to receive traffic alerts
 
Road Conditions: COtrip.org 
COtrip Planner App: bit.ly/COtripapp
Project Travel Alerts: bit.ly/COnewsalerts
Lane Closures: bit.ly/laneclosures
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