Coffman Street Mobility Improvements
The Coffman Street Mobility Improvements project extends from 1st Avenue to 9th Avenue and will become a world-class and truly multi-modal corridor. It will provide the City with:
- Robust public transit (local, regional and BRT buses), with a near-term future hub just south of 1st Avenue
- Strong bicycle connections to and from downtown, including to the critical east/west Greenway and to the vibrant Old Town section of the City
- Better and wider space for pedestrians, up and down the corridor
Do you want to experience the new downtown Coffman Street corridor?
Check out an interactive StoryMap that showcases the future  design and highlights what is being constructed.
Updated: Sept. 25, 2024.
Construction started at the end of June 2024 and is expected to be completed in the summer of 2026.
- Southbound Coffman St. is closed between Longs Peak Ave. and 6th Ave.
- Construction continues on the intersection of Coffman St. and Longs Peak Ave.
- One lane of through traffic is open.
- A flashing red signal will be in place indicating a 4-way stop until the signal arm is removed.
- Temporary 4-way stop signs will be added during construction on the intersection.
- The stop signs will be removed and a new traffic signal installed when construction is complete.
- Both lanes of traffic and all parking are closed on 6th Avenue west of Coffman Street to the alley between Coffman St. and Terry St.
- Xcel Energy is lowering the gas line on Coffman St. between 5th Ave. and 2nd Ave. Parking is prohibited in the areas under construction.
Phase 1 (West Side): June 2024 – December 2024
- Work happening on the west side of Coffman St. between 9th Ave. and 6th Ave.
- Traffic is one-way only in the northbound lane of Coffman St. between 9th and 6th Avenues.
- Southbound traffic is prohibited on these blocks. Left turns are also prohibited from westbound 9th Ave. to Coffman St.
- The left turn lane from northbound Coffman St. to 9th Ave. is closed. Northbound traffic and bicyclists must use the center through lane to turn left.
- On-street parking is currently prohibited on the west side of Coffman St. between 9th and 6th Avenues.
- The 9th Ave. crosswalk on the west side of Coffman St. is closed. Pedestrians must cross on the east side of Coffman St.
Phase 1 (East Side): January 2025 – June 2025 (Estimated)
- When construction is completed on the west side of Coffman St., it will move up the east side from 6th Ave. to 9th Ave.
- Traffic will switch over and be one-way only in the southbound lane of Coffman St.
Phase 2: February 2025 – June 2026 (Estimated)
- From 6th Ave. to 2nd Ave. with a similar west to east progression as Phase 1.
- Parking will be prohibited in the areas under construction.
- A majority of driveways from Coffman St. will remain open unless a temporary closure has been approved by the property owner.
- Design Complete – December 2023
- Bid Advertisement – March 2024
- Construction Award – April 2024
- Construction Start – June 2024
- Construction Period – Anticipated 24 months
Coffman Street Mobility Improvement Project FAQs
In 2016 the Longmont City Council adopted Envision Longmont, a Multimodal and Comprehensive Plan for the City. Part of the Envision Longmont process specifically called out the effort to better define Enhanced Multiuse Corridors (EMUCs). In 2018, the Enhanced Multiuse Corridor Plan was completed, including Coffman Street as one of the key corridors. One unique piece of the Coffman Street corridor, that was not part of the other corridors in the plan, was the inclusion of a separate busway. The plan also showed the addition of separated bike facilities, and improved pedestrian features.
The existing 8th & Coffman transit transfer facility will be moved to the future transit/transportation hub at 1st Avenue & Main Street (1st & Main Station). This new facility and the improved Coffman Street will provide the spine of the transit system in Longmont when both projects are completed. The 2020 Subregional Transportation Improvement Plan (TIP) funding for this project includes dollars for design beginning 2021, with construction dollars programmed to begin in 2024.
Portions of Coffman Street will be partially closed during construction. The project will be phased so that only 2-3 blocks will be under active construction at the same time. Only one direction of traffic will be allowed on the blocks being constructed. Detour signs will direct traffic to Terry Street or Main Street to access Coffman Street from either the north or south, depending on which lane of traffic is open. Pedestrian access will be provided via sidewalks, cross-streets or alleyways. Walk-arounds will be provided when specific sections of sidewalks are under construction.
Construction will occur between Monday – Friday from 7 am – 7 pm. There may be times when work is required on the weekends due to weather and other factors. Notification will be provided under the Project Status section at the top of this page.
During construction, parking will not be allowed on Coffman Street on the blocks under active construction. The project will be phased so that only 2-3 blocks will be under construction at the same time. When construction is complete, on-street parking be available in some areas to accommodate the different types of motorists that need to park. Off-street parking developed alongside new residential & commercial buildings, will ensure that enough parking is provided along Coffman Street.
See the 2022 Downtown Longmont Parking Data Collection & Analysis for more information about parking along this corridor.
A limited number of trees will be removed to accommodate the new design. However, many of the existing trees will be maintained and additional landscaping features will be added between the sidewalks and bicycle lanes.
The current posted speed limit on Coffman Street is 25 mph. This will be maintained during and after construction.
The project will take approximately 2 years to complete. Construction began in summer of 2024 and is expected to be complete in summer of 2026.
