Projects

C-470 Express Lanes

Full Closures of Northbound and Southbound I-25 Ramps to Westbound C-470

When: Monday, January 22 through Friday, January 26

Time: 10:00 p.m. - 5:30 a.m.

Details: Full closures of northbound and southbound I-25 ramps to westbound C-470. Closures will occur nightly starting Monday, January 22 through Friday, January 26 beginning at 10:00 p.m. until 5:30 a.m.

These closures are necessary to perform wall excavation as part of the C-470 Express Lanes Project.

Detour Routes:

  • Detours are approximately 4.16 miles long. See Map below
  • Northbound and southbound I-25 ramps to westbound C-470 detour: Take northbound E-470 to Peoria and back onto southbound E-470 to westbound C-470.
  • NO TOLLS WILL BE CHARGED DURING CLOSURE.

C-470 Nighttime Ramp Closures

Due to the nature of the construction work on the C-470 Express Lanes Project, nighttime ramp closures are required intermittently through the next few weeks.

Ramps Affected: Quebec, University, Broadway, Lucent, Santa Fe and Wadsworth both westbound and eastbound

Details: These closure are required for crews to perform various tasks including striping, barrier placement, equipment mobilization, and other activities. Watch for detour signs and use caution. Detours will lead motorists to the next exit where they can return to C-470 and to their destination. Detours are typically 2.5-3 miles long.

High Line Canal Trail Now Open

The High Line Canal Trail is again available to use. CDOT and Flatiron|AECOM thanks users for their patience as the trail work was performed. 

Mary Carter Greenway Trail Closures

The Mary Carter Greenway Trail will be closed intermittently under the South Platte River Bridges as crews replace the existing east and westbound bridges.

  • Check this site for notification of closures.
  • Follow the posted detour signs.
  • The western detour is approximately 3.2 miles, which is 0.3 miles longer than the original route.
    • Follow the Columbine Trail along Chatfield Avenue and Platte Canyon Road. Take the Mineral Trail along Mineral Avenue to connect back onto the Mary Carter Greenway Trail.
  • The eastern detour is approximately 3 miles, which is 1 mile shorter than the original route.
    • Follow the Highline Canal Trail to Southpark Lane. Take the Mineral Avenue Trail. After crossing Santa De Drive, continue on the Railroad Spur Trail onto the Mary Carter Greenway Trail.

Project Facts

  • Location: 12.5 miles of C-470, from I-25 to Wadsworth Boulevard
  • Cost: $276 million

Updates

Concrete Paving
Concrete paving for the new widened highway is progressing. Paving crews have advanced from Quebec to Lucent on eastbound C-470, marking a major project milestone.

Frequent Nighttime Ramp Closures and Traffic Shifts
Travelers can expect frequent nighttime ramp closures from 8 p.m. to 5:30 a.m. These closures are necessary for striping operations, maintenance, and setting of temporary barrier. The detours are usually approximately 3 miles round trip to the next exit and back. 

Areas between I-25 and Wadsworth have been restriped to shift the traffic alignment. Be sure to drive carefully through the construction zone and obey posted speed limit signs.

Reconstruction of the South Platte River Bridges
Work on the new eastbound South Platte River Bridge has significantly progressed. Drivers may notice lots of equipment moving material along eastbound C-470 between Wadsworth and Santa Fe to raise the grade to meet the new bridge elevation. Eventually traffic will be moved onto the new eastbound structure so demolition of the old Platte River Bridge can begin. Because of the proximity to the Mary Carter Greenway Trail, flaggers have been placed to guide trail  users through the construction zone when needed.  The South Platte River bridges are the only bridges being fully reconstructed with the C-470 project. They are being brought to current design standards and when complete will also accommodate increased vertical clearance for equestrian use on the Mary Carter Greenway Trail.

University, Broadway, Big Dry Creek, Erickson and Yosemite Bridge Widenings
The bridges over University, Broadway, and Big Dry Creek have been widened. Work on the Acres Green, Yosemite and Erickson bridge widenings are well underway. Lane closures on Acres Green, Yosemite and Erickson can be expected.

Wadsworth to Santa Fe
Work between Wadsworth and Santa Fe continues to increase. Activities include grading operations, drainage work, retaining wall installation, replacement of the South Platte River Bridges, and continued installation of Intelligent Transpiration System (ITS) equipment and devices (i.e. ramp meters, cameras, Variable Message Signs, etc. ITS equipment is the backbone that enables Express Lanes tolling and ramp metering to work.

Lucent to Quebec
Construction continues between Lucent and Quebec including trail reconstruction, temporary barrier and restriping, earthwork and drainage operations, retaining and noise wall construction, subgrade treatment in preparation for concrete paving, sign caissons, temporary asphalt paving, and ITS work including ramp meters, cameras, Variable Message Signs, and closed circuit TV caissons. 

Lane Closures for January 19 - January 27

Sunday (1/21)-Friday (1/26) 8:00 p.m.-5:30 a.m.: Alternating right and left single lane and/or double lane closures on east and westbound C-470 for median widening earthwork, setting of temporary barrier, equipment mobilization, and bridge construction.

Friday (1/19)-Saturday (1/20), Sunday (1/21), Monday (1/22), Tuesday (1/23), Thursday (1/24)-Saturday (1/27) 9:00 p.m.-5:30 a.m.: Full ramp closures at eastbound Broadway on-and off-ramp

Sunday (1/21), Monday (1/22) 8:00 p.m.-5:30 a.m.: Eastbound Quebec on- and off-ramp full closure for temporary ramp widening work.

Sunday (1/21), Monday (1/22) 12:00 a.m.-5:30 a.m.: Santa fe westbound off-ramp full closure for temporary ramp widening work.

Monday (1/15) 10:00 p.m.-5:30 a.m.: Santa Fe eastbound on-ramp full closure.

Friday (1/19), Tuesday (1/23), Wednesday (1/24), Thursday (1/25), Friday (1/26) 8:00 p.m.-5:00 a.m.: Broadway westbound on-ramp full closure and Quebec westbound on- and off-ramp full closure for temporary ramp widening work.

Friday (1/19), Tuesday (1/23), Wednesday (1/24), Thursday (1/25), Friday (1/26) 9:00 p.m.-5:30 a.m.: Wadsworth eastbound on-ramp full closure for temporary ramp widening work.

Monday (1/22) - Friday (1/26) 10:00 p.m.-5:30 a.m.: Full closure of the north and southbound I-25 ramps to westbound C-470.

Sunday (1/21)-Friday (1/26) 7:00 p.m.-5:00 a.m.: Right/left single lane closure or double lane with sidewalk closures on Broadway and University for bridge construction.

Friday (1/19) and Monday (1/22)-Friday (1/26) 9:00 p.m.-6:00 a.m.: Partial closure of the Yosemite westbound on-ramp for bridge construction.

Friday (1/19) and Monday (1/22)-Friday (1/26) 8:30 a.m.-3:30 a.m.: Right/left lane closures on Erickson, Acres Green, and Yosemite for bridge construction.

Friday (1/19) 9:00 a.m.-3:00 p.m. and Monday (1/22)-Friday (1/26): Partial ramp closures at Broadway, Lucent, and University for temporary ramp widening and ITS work. Also traffic pace operation on east and westbound C-470. (Trucks will occasionally slow the right lane of traffic to allow construction vehicles to safely enter/exit work areas.)

Friday (1/19) and Monday (1/22)-Friday (1/26) 7:00 p.m.-6:00 a.m.: Partial ramp closures at Broadway and  Yosemite for temporary ramp widening, ITS work, and bridge construction; left lane closures on University for bridge construction; right/left lane closures on Erickson, Acres Green and Yosemite for beige construction.  

Saturday (1/20 and 1/27) 8:00 p.m.-8:00 a.m.: Alternating right and left lane closures on east and westbound C-470; Quebec eastbound on- and off-ramp full closures; Santa Fe eastbound on-ramp and westbound off-ramp full closure.

Photo of the Week

Noise wall panel being placed along C-470.

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