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Ralston Road Project

What's Happening Now 

Phase One (Upham to Yukon Streets): Traffic has been shifted to the south side of Ralston Road, with one lane in each direction. No left turns are permitted onto or off of Ralston Road through the construction area. This alignment will be in place through October 2020. Please be alert for intermittent closures and traffic pattern changes. 

Important upcoming closure information: Beginning Monday, October 5, the intersections on the northside of Ralston Road will be closed for repairs from Upham to Yukon. Please use the detour signs to navigate around the closures.

Schedule for Week of Sept. 28: While the full closure of the northside of the corridor will remain in place, traffic will maintain one open lane of traffic in each direction, from Olde Wadsworth Pkwy to Upham St.

We ask motorists to drive carefully through the work zone, as slowdowns and delays are possible. 

Typical working hours are from 8 a.m. to 4 p.m., Monday through Friday.

Contact information for Phase One: 720-443-0999 or

Parking lot at Griff's site closed: Public parking will be unavailable in the Griff's lot for construction activity.

Phase Two (Yukon to Garrison Streets): Preliminary construction plans were recently completed and, this fall, the right-of-way acquisition process will begin. Construction is currently scheduled to begin Fall/Winter 2020. Look for updates regarding the projects here and on all the City's communication platforms.​


As part of the City’s ongoing efforts to provide sustainable infrastructure for our growing city, we are undertaking a project to widen and improve the Ralston Road corridor between Upham and Yukon Streets (Phase One) followed by the segment between Yukon and Garrison Streets (Phase Two). 

Ralston Road is an arterial roadway and a major east-west corridor for Arvada’s transportation network, serving 23,000 vehicle trips each day. It provides connectivity to major north-south corridors including three State Highways (SH-95/Sheridan Blvd., SH-121/Wadsworth Blvd., and SH-72/Ward Road). The Regional Transportation District (RTD) operates five bus lines using portions of Ralston Road. Major destinations served by Ralston Road include Olde Town, Stenger/Lutz Sports Complex, City Hall, Ralston Central Park, and the Ralston Creek North shopping area.

Phase One Project Update: As of August 2020, crews have made significant progress on the project (20% of the work is now completed).

To date, the contractor has:

  • Completed utilities work, including relocation and realignment 

  • Removal of trees

  • Removal of the median 

  • Removal of overhead signals on Upham Street 

  • Installation of temporary signals 

  • Preparation and pour of sidewalks and driveways 

Highlights of the project

  • Creation of 8-foot wide pedestrian path (similar to a trail), allowing cyclists access to parks and trails. This sidewalk width exceeds ADA minimums and supports the needs of Arvada’s aging population. It also allows pedestrians to walk side-by-side or with their pets and creates distance from the travel lanes.

  • Widen the existing 9 foot vehicle travel lanes to 11 feet. This will help decrease sideswipe accidents.

  • Installation of gutter pans to provide an additional 1 feet of space for the accumulation of rain, snow, and debris outside of the travel lanes.

  • Widen the center two-way-left-turn lane to 12 feet to increase driver safety/comfort while stopped between passing vehicles.

  • Reconstruction of aging traffic signals with new technology to improve traffic progression.  

What to Expect During Construction

  • Access to all businesses along Ralston Rd will be maintained throughout construction.

  • RTD service along Ralston Road will continue during construction.

  • There will be lane closures and periodic closures of roads that cross Ralston Road.

  • Construction will be conducted in stages in order to efficiently use resources. It may appear that construction moves around or stops and starts in certain areas.  

  • There will be disruptions to your typical travel on Ralston Road. We encourage all residents to consider alternate routes and plan for additional travel time.

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For questions about the Ralston Road Improvement Project Phase One, please contact 720-443-0999 or

For questions about the Ralston Road Improvement Project Phase Two, please contact City Engineer Trang Tran, 720-898-7646 or