C-470 Express Lanes

Current and Upcoming Activities

Project Facts

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

Wadsworth to Santa Fe: Preparation of subgrade for concrete paving in April; installation of walls, drainage, overhead signs, and ITS fiber; continued construction on the eastbound Platte River Bridge and Santa Fe eastbound off-ramp; traffic switch onto new Platte River Bridge coming in the near future.

Santa Fe to Lucent: Earthwork; asphalt paving; Erickson bridge approach slab work; wall construction; traffic shift to median coming soon.

Lucent to Quebec: Concrete paving; bridge work at Big Dry Creek, University, and Broadway; wall construction; subgrade treatment; drainage pond construction and drainage installation; overhead signs; ITS.

Quebec to I-25: Earthwork; drainage; wall construction; ITS; Acres Green and Yosemite concrete pour on bridge deck coming in April; Willow Creek box culvert construction; bridge column work near I-25 interchange.

Lane Closures

Sunday 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, University; ramp closures possible at Santa Fe, Quebec and Broadway
Monday-Friday 8:30 a.m.-3:30 p.m.: Right and left lane closures on Erickson, Acres Green and Yosemite; partial ramp closures on Broadway, Lucent and University; traffic pace on east and westbound C-470.
Monday-Friday 7 p.m.-5:30 a.m.: Alternating right and left lane closures on east and westbound C-470; single lane closures on Yosemite, Acres Green, Broadway, University and Erickson; full ramp closures possible at Lucent, Santa Fe and Broadway, Quebec and Wadsworth. 
Saturday 8 p.m.-8 a.m.: Alternating right and left lane closures on east and westbound C-470; full ramp closures possible at Santa Fe, Quebec and Broadway.

RTD's Lincoln and County Line Light Rail Stations Closed for Nine Days Beginning March 16

What: RTD will close the Lincoln and County Line light rail stations to train service to tie together existing RTD service and the new, 2.3-mile extension of the E, F and R lines south of Lincoln Station. The closing will also accommodate bridge work by CDOT for the C-470 Express Lanes Project.

When: Friday, March 16 from 9:00 p.m. through 3:00 a.m. Monday, March 26.

Details: Dry Creek Station will serve as the end of the line during the process, known as the cutover. During the closure, limited bus shuttle service will be available between Lincoln and Dry Creek Stations. Riders are encouraged to use stations north of County Line Station or seek alternate means of transportation. Service north of Dry Creek Station will not be affected.

RTD is working to provide extra parking spaces north of Dry Creek Station to accommodate increased demand during the closure. Additional parking is available at the Park-n-Ride for the Arapahoe at Village Center Station, 8800 E. Caley Ave., Greenwood Village.

In addition, RTD has partnered with ride-share service Lyft to offer reduced-price rides during the closure of Lincoln and County Line stations. From 6 a.m. Friday, March 16, to 10:30 a.m. Monday, March 26, Lyft is offering 20 percent off each ride up to five rides to or from Dry Creek Station. The maximum discount offered per ride is $5. Download and claim your discount at using code DRYCREEK20.

Dates for the closure are weather-dependent and subject to change. To receive project updates and notifications, or for more information on bus shuttle schedules during the closure, visit 

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, March 17 through Friday, March 30 24/7

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

Northbound Broadway Dedicated Right Turn Lane, 24/7 Closure

What: Northbound Broadway 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: Saturday, March 31 through Tuesday, April 17. Closed 24/7

Non-commercial vehicles will still be able to utilize the on-ramp and will turn right at the traffic light.

Commercial vehicle detour is approximately 2.23 miles long. Take northbound Broadway to County Line Rd. and turn right. Take County Line Rd. to University and turn right, then continue onto eastbound C-470 on-ramp. (See map.)

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

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

When: Saturday, March 24 from 12 a.m. to 8 a.m., as well as Monday, March 26 through Thursday, March 29 from 10 p.m. to 5:30 a.m. and Saturday, March 31 from 12 a.m. to 8 a.m.

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

  • 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.

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.

Willow Creek Trail at C-470 Full Closure

What: Full closure of north and southbound Willow Creek Trail. The closure will occur twenty-four hours a day and is necessary to begin drainage work and trail widening construction.

When: Monday, March 26 through Monday, May 28. 24/7

Detour: Detours are approximately 1 mile long, see map below.

  • Southbound Willow Creek Trail Detour: Take C-470 Trail west to Acres Green Dr., turn left. Take Acres Green Dr. to Park Meadows Dr. and turn left, continue to Willow Creek Trail south.
  • Northbound Yosemite Detour: Take Park Meadows Dr. west to Acres Green Dr., turn right. Take Acres Green Dr. to C-470 Trail and take the trail east, then merge onto Willow Creek Trail north.

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.

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