Aug. 14, 2023 – The City of Longmont has contracted with Zak Dirt, Inc. to replace the Boston Avenue Bridge over St. Vrain Creek just east of the South Francis Street intersection. Construction is scheduled to start this week and be completed in the summer of 2025.

This work is part of the Resilient St. Vrain Project (RSVP) which is a multi-year, multi-phase flood recovery initiative to restore the St. Vrain Greenway and protect people and property from future flood risks. The new Boston Avenue Bridge will be longer and the channel underneath will be wider and deeper to better withstand major flood events. Additional construction will include improvements to surface sidewalks, bike lanes and the pedestrian underpass to reduce the likelihood of closures due to flooding.

The primary goals of the project are to improve hydraulic function within the creek channel, expand multi-modal transportation along Boston Avenue and enhance the pedestrian and bicyclist experience. Future work on the RSVP after the Boston Avenue Bridges includes work from Sunset Street to Hover Road, as approved by City of Longmont voters in 2022. This work will commence once the bonds are issued.

Construction on the bridge will be phased to limit vehicle impacts as much as practical, but delays should be expected. During the first phase, one half of the bridge will be demolished and reconstructed, while traffic is allowed on the other half. In the second phase, the remaining half of the bridge will be demolished and reconstructed. This will allow traffic to continue to travel on Boston Avenue while the old bridge is removed and the new bridge is constructed. The pedestrian trail under the bridge will be closed for the duration of construction.

The public is encouraged to check the project website at http://bit.ly/Boston-Ave-Bridge for current status and any anticipated closures and detours. If you have questions or concerns about the project, please call the project hotline at (720) 819-7544.   

The City of Longmont would like to extend thanks in advance to travelers, residents, and businesses for their patience as we begin this project to improve the Boston Avenue bridge.

Si necesita esta información en español, por favor llame al (303) 651-8416.