I-70B Third Street to Sixth Street Improvements | Design Phase

About the Project

The Colorado Department of Transportation finalized the design phase of the I-70B East of Third Street Improvements in Grand Junction, which is located on I-70B from approximately Third Street to Sixth Street. Construction of the safety and mobility improvements for this area (Phase 7 of construction) is planned to start in early 2026. The final design includes improved street connections, multimodal improvements, signal replacement, utility infrastructure improvements, lighting enhancements and landscaping enhancements.

The project is the next in a series of phased improvements on I-70B. It follows the I-70B South of Rood Improvement Project (Phase 6). Construction on Phase 6 started in 2024 and is anticipated to be complete in 2025. More information about the previous project, including construction traffic impacts, can be found here: codot.gov/projects/i70bsouthroodavenue.

I-70B is the backbone of the transportation system in Grand Junction, serving as a gateway to regional retail, interregional connections, commuters, employment centers and other local institutional facilities, recreational facilities and neighborhoods.

Project Area

The project is located on I-70B in Grand Junction in Mesa County. It extends from approximately Third Street to Sixth Street.