In late March, construction crews reached a major milestone by beginning the South Phase of the Basalt Avenue Pedestrian Underpass project. In order to begin this phase, crews conducted a traffic switch in a two-day process to move live State Highway 82 traffic on top of the first half of the underpass. The switch was safely finalized on March 17, and excavation on the South Phase began on March 20.
The project team estimates the majority of excavation activities will be complete by April 8. Crews will then begin pouring concrete for the tunnel slabs and walls, followed by the installation of storm drains and setting of the precast top to the underpass.
As of early April, the project is an estimated 45% complete. The underpass is expected to be fully functional by mid-August and open for public use by the start of the new school year. Full completion, including all of the landscaping elements, is on schedule for completion in late October.
The tentative schedule of major phases of work planned for the project includes:
September 2016 – March 2017: North Phase
March 2017 – August 2017: South Phase
September 2017 – October 2017: Final Phase
In September 2016, the Town of Basalt began constructing a pedestrian underpass beneath State Highway 82 at mile point 23.1. The project will provide safety improvements for all modes of transportation by allowing non-motorist traffic to pass under the highway.
The completed underpass will connect the Roaring Fork Transportation Authority parking lot with the Basalt Store front and Bus Rapid Transit stations located at the intersection. Residents will also have easier, more convenient access to schools located to the north and south of the project.
The new, fully illuminated underpass is designed to be 140 feet long, 16 feet wide, and up to 9 feet tall. The construction of the underground path, combined with the installation of new traffic signals and an upgraded storm water drainage system, is anticipated to improve the flow of traffic and pedestrian safety along the highway. The Town of Basalt awarded Oldcastle/United companies the $6.2 million bid for this project.
Normal working hours for the project are Monday through Friday, from 7 a.m. to 7 p.m. No work is planned on holidays or weekends.
Traffic and Pedestrian Impacts
Additional impacts to travelers on State Highway 82 should be minimal. Five lanes of traffic will be maintained throughout the duration of the project with temporary asphalt pavement. Pedestrians will continue to cross State Highway 82 at the temporary crossing and up valley RFTA transit users have a new longer path through the park and ride to the temporary up valley station.
Traffic speeds will be reduced to 35 mph in the work zone. Please use caution while traveling through the construction zone and follow flaggers’ directions. A width restriction of 11 feet is in place during working hours.
Contact the Project Team:If you have questions about the project, please call the project hotline or email the public information team. You will receive a response within 24 business hours.
Project Update Links:
November 9, 2016: Traffic Advisory for Basalt Underpass
November 8, 2016: Pedestrian Walkways to Bus Stops at Basalt Underpass Project
November 1, 2016: Project Update and Traffic Information
November 1, 2016: Project Information Video
September 28, 2016: Project Update
September 2016: Project Announcement
April 16, 2015: Basalt Underpass_North Entry Perspective Rendering
April 16, 2015: Basalt Underpass_South Entry Perspective Rendering