Projects

C-470 Express Lanes

University Eastbound C-470 On-Ramp Left Lane Closure

What: University on-ramp to eastbound C-470 left lane closure to perform ramp construction and concrete paving as part of the C-470 Express Lane Project.

When: Saturday, February 24 through Friday, March 9

  • Vehicles will use the right lane of the eastbound on-ramp only. (See map below.)

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

What: Crews will conduct a full closure of the northbound and southbound I-25 ramps to westbound C-470 for wall construction.

When: Tuesday, February 20 and Thursday, February 22

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

Detours: Detours are approximately 4.15 miles long, see map below.

Detour Routes:

  • Northbound and southbound I-25 ramps to westbound C-470 Detour: Take northbound and southbound I-25 to northbound E-470 to Peoria Street exit. Take Peoria Street to southbound E-470 and continue onto westbound C-470. No tolls will be charged during closure.

University Ramp Construction/Turn Pocket Closure 

What: Northbound University dedicated right turn onto eastbound C-470 on-ramp closure to perform ramp construction and concrete paving as part of the C-470 Express Lanes Project.
When: Friday, February 9 through Tuesday, February 27. Closed 24/7.
Detour: Non-commercial vehicles will still be able to utilize the on-ramp and will turn at the traffic light.

Commercial vehicles will take northbound University Blvd. to County Line Rd. Turn right onto County Line Rd., continue to Quebec St. Turn right onto Quebec St., then turn left onto eastbound C-470 on-ramp.

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.

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. Paving will continue on westbound C-470 near Quebec.

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 February 8-February 24

Friday (2/9)-Monday (2/26) 24/7: Northbound University dedicated right turn onto eastbound C-470 on-ramp full closure. Right turn at eastbound on-ramp intersection to remain open.

Monday (2/12)-Friday (2/16) 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.

Monday (2/12)-Friday (2/16) 10:00 p.m.-5:30 a.m.: Santa Fe westbound off-ramp full closure for temporary ramp widening work.

Tuesday (2/13)-Friday (2/16) 9:00 p.m.-5:30 a.m.: Wadsworth eastbound on-ramp full closure for temporary ramp widening work.

 Monday (2/12)-Friday (2/16) 9:00 p.m.-6:00 a.m.: Partial closure of the Yosemite westbound on-ramp for bridge construction.

Monday (2/12)-Friday (2/16) 8:30 a.m.-3:30 a.m.: Right/left lane closures on Erickson, Acres Green, and Yosemite for bridge construction.

Monday (2/12)-Friday (2/16) 9 a.m.-3:00 p.m.: Partial ramp closures at University, Broadway, and Lucent.

Monday (2/12)-Friday (2/16) 7 p.m.-5 a.m.: Partial on-ramp closures at eastbound Broadway and eastbound Yosemite; north and southbound right and left lane closures at Erickson and University.  

Monday (2/12)-Friday (2/16) 9 p.m.-6 a.m.: Right and left lane closures on Yosemite; north and southbound Acres Green right and left lane closures.

Monday (2/12)-Friday (2/16) 10 p.m.-5:30 a.m.: Westbound Santa Fe off-ramp full closure for temporary ramp widening work.

Monday (2/12) - Wednesday (2/14) 10 p.m.-5:30 a.m.: Eastbound C-470 ramp to northbound I-25 closures to perform striping activities.

Thursday (2/15) and Friday (2/16) 10 p.m.-5:30 a.m.: Eastbound C-470 ramp to southbound I-25 closure for striping and barrier set.

Monday (2/12) 10 p.m.-5:30 a.m.: Eastbound Santa Fe and Quebec on-ramp full closure for temporary ramp widening work.

Monday (2/12)-Thursday (2/15) 8 p.m.-5 a.m.: Westbound Broadway on-ramp full closure.

Monday (2/12)-Friday (2/16) 6 p.m.-5:30 a.m.: Lucent westbound on-ramp full closure for temporary ramp widening work.

Tuesday (2/13)-Friday (2/16) 8 p.m.-5 a.m.: Westbound Quebec on-ramp full closure.

Saturday (2/17) 8p.m.-8a.m.: Alternating right and left lane closures on east and westbound C-470.

Sunday (2/18) 8 p.m.-5:30 a.m.: Alternating right and left lane closures on east and westbound C-470; right and left lane closures on Broadway and University; possible full ramp closures at westbound Santa Fe off-ramp, Quebec eastbound on- and off-ramp, and Broadway eastbound off-ramp.

Monday (2/19) 8:30 a.m.-3:30 p.m.: Right and left lane closures on Erickson, Acres Green and Yosemite for bridge construction.

Monday (2/19) 9 a.m.-3:00 p.m.: Partial ramp closures on Broadway, Lucent and University. Traffic pace operation to allow construction vehicles to safely enter/exit work areas.

Monday (2/19) 7 p.m.-5 a.m.: Partial ramp closures at Broadway and Yosemite; alternating right and left lane closures on Broadway, University and Erickson.

Monday (2/19) 8 p.m.-5:30 a.m.: Alternating right and left lane closures on east and westbound C-470, Acres Green and Yosemite; full ramp closures possible on westbound Lucent on-ramp, Santa Fe eastbound on-ramp and westbound off-ramp, Quebec eastbound on- and off-ramp, and Broadway eastbound off-ramp and westbound on-ramp.  

Tuesday (2/20)-Friday (2/23) 8:30 a.m.-3:30 p.m.: Right/left lane closures on Lucent, Erickson, Acres Green and Yosemite; partial ramp closures at Broadway, Lucent and University.

Tuesday (2/20)-Friday (2/23) 7 p.m.-5 a.m.: Right/left lane closures on Erickson, Yosemite, and University; partial ramp closures on Broadway eastbound on-ramp and Yosemite eastbound off-ramp.

Tuesday (2/20)-Friday (2/23) 8 p.m.-5:30 a.m.: Alternating right and left lane closures on east and westbound C-470.

Tuesday (2/20)-Friday (2/23) 10 p.m.-5:30 a.m.: Northbound and southbound I-25 Connector to westbound C-470 full closure. Follow posted detour signs. 

Saturday (2/24) 8 p.m.-8 a.m.: Alternating right and left lane closures on east and westbound C-470; Full closures possible of Quebec eastbound on- and off-ramp,  Santa Fe eastbound on-ramp and westbound off-ramp and Broadway westbound on-ramp.  

Photo of the Week

Soil Nail Wall along westbound C-470 under Colorado Blvd.

Colorado: The Official State Web Portal