C-470 Express Lanes

Project Facts

  • Location: 12.5 miles of C-470, from I-25 to Wadsworth Boulevard
  • Cost: $276 million
  • adding two westbound Express Lanes from I-25 to Colorado Boulevard, and adding one westbound Express Lane from Colorado Boulevard to Wadsworth Boulevard
  • adding one eastbound Express Lane from just west of the South Platte River to I-25;
  • fully reconstructing a portion of the existing pavement;
  • adding auxiliary lanes;
  • improving portions of on- and off-ramps to current standards (including ramp metering where appropriate);
  • realigning substandard curves;
  • making safety and operational improvements between I-25 and Quebec via direct-connect ramps from I-25 to the westbound C-470 Express Lanes;
  • widening existing bridges throughout the project area;
  • replacing the bridges over the South Platte River;
  • installing water-quality features where required;
  • installing noise barriers where required;
  • installing Intelligent Transportation Systems elements and tolling equipment; and
  • adding grade separations for the multi-use trail at Quebec and Colorado.

Current and Upcoming Work

Wadsworth to Santa Fe:

  • Traffic has been shifted onto new permanent concrete pavement and the newly constructed South Platte River Bridge eastbound between Wadsworth and Santa Fe.
  • Demolition of the old eastbound South Platte River bridge is complete.
  • Currently, the Mary Carter Greenway Trail at the South Platte River is open. Occasionally flaggers will post in that area to guide users when work is occurring.
  • Work on the north side of the eastbound South Platte River bridge is ongoing.

Santa Fe to Lucent:
Work includes:

  • drainage installation;
  • noise wall construction;
  • continued work on the Erickson bridge;
  • concrete paving; and
  • retaining wall construction near the Highline Canal Trail.

Lucent to Quebec:

  • Eastbound traffic has been shifted onto new permanent concrete pavement between Lucent and Quebec.
  • Concrete paving is ongoing.
  • Subgrade treatment is taking place.
  • Crews will complete guardrail and overhead sign installation, and drainage work.
  • Crews will do ITS work (light poles and tolling infrastructure in median).
  • Expect approach slab work at the Big Dry Creek bridge, and trail paving.

Quebec to I-25:
Work includes

  • earthwork;
  • drainage pond grading and pipe installation;
  • soil nail wall construction in I-25 interchange area;
  • ITS;
  • bridge work at Yosemite and Acres Green;
  • Willow Creek trail now open;
  • permanent barrier installation;
  • temporary asphalt paving in median and I-25 interchange;
  • installation of overhead signs;
  • trail paving; and
  • bridge column/abutment construction, girder set and bridge deck pour complete for new direct connect bridge near I-25 to westbound C-470;
  • Traffic shift on eastbound C-470 to open third lane between Yosemite off-ramp and I-25.

Lane Closures

  • Between 9:30 p.m. on Thursday, January 17 until 5:30 a.m. on Friday, January 18 eastbound C-470 from Wadsworth to Santa Fe will be closed to shift traffic onto new permanent pavement over the South Platte River Bridge. To detour:
    • Exit Wadsworth eastbound off-ramp. Turn left onto northbound Wadsworth Blvd., proceed north to Ken Carly Ave. and turn right. Continue on Ken Caryl Ave. until the road becomes Mineral Ave. Take Mineral Ave. east until Santa Fe Dr. Turn right onto southbound Santa Fe, the continue south to the eastbound C-470 on-ramp.
  • Friday, January 18 from 9:30 p.m. to 7:30 a.m. on Saturday, January 19 westbound C-470 will be closed from University Blvd. to Broadway to shift traffic onto new permanent concrete pavement. Detour:
    • Exit University Blvd. westbound off-ramp. Turn right onto northbound University Blvd., proceed north to County Line Rd and turn left. Continue on County Line Rd. for one and a half miles to Broadway. Turn left onto southbound Broadway, then continue to the westbound C-470 on-ramp.
  • Saturday, January 19 from 10:00 p.m. to 8:00 a.m.,  and on Saturday, January 26 from 10:00 p.m. to 8:00 a.m. the northbound and southbound I-25 ramps to westbound C-470 will be closed for bridge construction. For the detour:  
    • Take northbound and southbound I-25 to northbound E-470, to the Peoria Exit. Take Peoria to southbound E-470 and continue on westbound C-470. No tolls will be charged during the closure.
Colorado: The Official State Web Portal