Boulder County, in partnership with the City of Lafayette, is undertaking a significant project to reconstruct 120th Street. This crucial infrastructure improvement will span from Overlook Drive in Lafayette to Dillon Road in Broomfield, aiming to enhance safety and efficiency for all road users. The project (see project area map) focuses on widening the existing road and improving its profile to better serve the community.
Key Improvements on 120th Street
The 120th Street reconstruction project addresses several critical issues to create a safer and more efficient roadway. A primary goal is to reconstruct 1.25 miles of 120th Street, incorporating a new road profile and pavement. This will significantly improve drainage and reduce the steep grades that currently pose challenges, particularly for large vehicles. The road will be widened to 36 feet to accommodate a vehicle lane in each direction, along with two five-foot paved shoulders and two-foot painted buffers. These buffered shoulders will provide dedicated space for cyclists and pedestrians, separated from vehicle traffic, enhancing safety for non-vehicular road users. Furthermore, to improve safety at intersections, a northbound left-turn lane will be added to the northern Rock Creek Circle intersection. The project design also ensures consistency with recent improvements made by the City and County of Broomfield at the Dillon Road intersection, creating a seamless transition for drivers.
Existing condition of 120th Street looking north before reconstruction in Boulder County
Project Timeline and Anticipated Road Closure
The design phase of the 120th Street project was completed in 2021. Construction is anticipated to commence in 2025, marking a major step forward for this infrastructure upgrade. It’s important to note that to facilitate the extensive reconstruction work, 120th Street will be closed between Overlook Drive and Dillon Road. This closure is essential to efficiently and safely complete the project. Businesses within the closure zone will maintain egress, but traffic will be directed north. Access will be maintained for entrances from the southbound direction, minimizing disruption as much as possible while ensuring the project’s timely completion.
Existing condition of 120th Street looking south, highlighting the need for road reconstruction project
In conclusion, the 120th Street Reconstruction Project represents a vital investment in Boulder County’s infrastructure. By addressing critical issues such as drainage, steep grades, and safety for all users, this project will result in a significantly improved roadway. Residents and commuters can look forward to a safer, more efficient 120th Street upon the project’s completion.
