Firestone-Longmont Mobility Hub

About the Project

Colorado Department of Transportation is reorganizing and expanding resources to create more multimodal options statewide.  Adding the Firestone-Longmont mobility hub will enable greater use of Bustang, the statewide transit system, to encourage ride sharing instead of single-occupant vehicle use.

Tunnel image

Benefits of Project

The hub will improve multimodal access to promote regional transit and include:

  • A northbound pedestrian pick-up and drop-off platform along the I-25 off-ramp
  • A new platform on southbound Frontage Road just before the entrance of the southbound on-ramp
  • A sidewalk and pedestrian underpass to connect users from the Park-n-Ride on the east side of I-25 to the station platforms on the west side of I-25
  • Greater capacity with 269 parking spaces
  • Large sidewalks and bicycle storage racks allow for multiple modes to utilize the hub and enhance multimodal connectivity
  • Bus shelters will be installed with an electronic public information board with real-time Bustang departure and arrival schedules.

Project Facts

  • Cost: $13.1 Million
  • Contractor: Zak Dirt
  • Timeline: Project Completed by August 2024
  • Location: I-25 and CO 119 in Firestone/Longmont

Firestone Mobility hub project map revised

Location map for Firestone Mobility Hub at I-25 and CO 119

Work Schedule

  • Daytime work hours are expected between the hours of 7 a.m. to 7 p.m., Monday through Friday
  • Periodic overnight work between the hours of 7 p.m. and 7 a.m. will include lane closures on the off-ramp, on-ramps, and on I-25.

Traffic Impacts

Southbound I-25

  • 3 southbound lanes will remain open with a traffic shift to the right, 24/7 through August 2023
  • Construction crews will be working in the median
  • Overnight work, Sunday and Monday - March 26 and 27: Crews will begin closures on SB I-25 to set barrier with a single lane closure starting at 7 p.m. to 11 p.m., and a double lane closure from 11 p.m. to 5:00 a.m
  • CAUTION - Trucks will be entering and exiting from the median

I-25 Traffic Shift I-25 Southbound

Southbound Frontage Rd / I-25 On-Ramp at Exit 240

  • Left lane will be closed to set barriers and will remain closed 24/7 through August 2023
  • Construction crews will be working on the left shoulder behind barrier
  • Flaggers will assist motorists through the construction work zone
  • CAUTION - Trucks will be entering and exiting from the work zone

I-25 Northbound Off-Ramp at CO 119

  • Construction crews will be working on the left side of the ramp behind the barrier

southbound I-25 Frontage

East I-25 Frontage Road

  • Caution - Trucks entering and exiting the dirt lot south of the existing Park-n-Ride

NB E I-25 Frontage Road

  • Thursday and Friday, 7 a.m. - 5 p.m.: Setting Barrier 
  • Flaggers will assist motorists through the construction work zone
  • Right turn onto CO 119 will be closed until May 2023

northbound east I-25 map


  • Motorists will continue north on E I-25 Frontage Rd. past Firestone Blvd./CO 119, right onto Union St., right on Arbor St., left on Firestone Blvd./CO 119

Please check for current travel information.

  • I-25 northbound and southbound: The speed limit is 55 mph through the work zone. Please obey speed limit signs.
  • Motorists can expect periodic single-lane closures on CO 119 and I-25, on-and off-ramp closures, and sidewalk closures
  • 11-foot lane restrictions on the southbound I-25 on-ramp and the northbound off-ramp at Exit 240.
  • In the event of unforeseen circumstances or weather, work may need to be rescheduled if operations cannot be completed.