Projects

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

  •  Friday, February 15 from 9:00 p.m. to 7:00 a.m. westbound C-470 from Santa Fe to Wadsworth Blvd. will be closed to shift traffic onto the new eastbound South Platte River Bridge. The detour will be to exit the Santa Fe westbound off-ramp. Turn right onto northbound Santa Fe Dr., proceed north to Mineral Ave. and turn left. Continue on Mineral Ave. until the road becomes Ken Caryl Ave. Take Ken Caryl Ave west until Wadsworth Blvd. Turn left onto southbound Wadsworth Blvd, then continue south onto the westbound C-470 on-ramp.
  • The northbound and southbound I-25 ramps to westbound C-470 will be closed on the following dates/times to perform roadway maintenance and perform bridge work:  Wednesday, February 13 from 10:00 p.m. to 5:30 a.m. and Friday, February 15 and Saturday, February 16 from 10 p.m. to 8 a.m. Additionally, Monday, February 18 through Thursday, February 21 from 10 p.m. to 5:30 a.m. to set bridge girders. To detour, take northbound and southbound I-25 to northbound E-470. Exit at Peoria to southbound E-470 and continue onto westbound C-470. No tolls will be charged during closures.
  • Wednesday, February 13 from 10:00 p.m. to 5:30 a.m. eastbound C-470 to northbound E-470 will be closed. Take eastbound C-470 to southbound I-25 and exit at Lincoln Ave. Detour, take Lincoln Ave. east and continue onto northbound I-25. Take the ramp to northbound E-470.
  • Thursday, February 14 through Monday, February 18 Saturday, February 16 through Tuesday, February 19 from 9:30 p.m. to 5:30 a.m. eastbound C-470 will be closed from the Santa Fe off-ramp to on-ramp. This closure is necessary for crews to perform drainage work. To detour, take the eastbound Santa Fe off-ramp, continue through the traffic signal onto the eastbound Santa Fe on-ramp.
  • Friday, February 15 from 10 p.m. to 8 a.m. the southbound I-25 ramp to westbound C-470 and northbound E-470 will be closed to shift traffic. Detour: Take southbound I-25 to Lincoln Ave. Take Lincoln Ave. eastbound and continue back onto northbound I-25 to westbound C-470 and northbound E-470.
  • Monday, February 18 through Thursday, February 21 from 10:00 p.m. to 5:30 a.m. eastbound C-470 will be closed from University Blvd. to Quebec St. to install permanent overhead sign structures. To detour, exit University eastbound off-ramp. Turn left onto northbound University, proceed to County Line Rd. and turn right. Continue on County Line Rd. to Quebec St. Turn right onto southbound Quebec St., then turn left onto the eastbound C-470 on-ramp.
  • Wednesday, February 20 from 10 p.m. to 5:30 a.m. the southbound E-470, southbound and northbound I-25 ramps to westbound C-470 from the I-25 interchange to Quebec St. will be closed. This closure is necessary to perform a traffic switch on the Yosemite St. westbound on-ramp to allow crews to continue roadway widening. Detours: Northbound I-25 to westbound C-470 - Take northbound I-25 and exit onto County Line Rd. west. Continue on County Line Rd. to Quebec St. and turn left. Take Quebec St. to the C-470 westbound on-ramp. Southbound I-25 to westbound C-470 - Take southbound I-25 and exit onto Lincoln Ave. west. Continue on Lincoln Ave. to Quebec St. and turn right. Take Quebec St. to the westbound C-470 on-ramp. Southbound E-470 to westbound C-470 - Take southbound E-470 to southbound I-25 and exit onto Lincoln Ave. west. Continue on Lincoln Ave. to Quebec St. and turn right. Take Quebec St. to the westbound C-470 on-ramp.

Trail Closure Alert

  • Northbound and southbound Mary Carter Trail be closed intermittently at the C-470 underpass starting February 18 for approximately 8 weeks for bridge demolition work. Trail users intending to continue through the C-470 underpass must detour beginning at Mineral Ave. All others will be able to use the Mary Carter Trail from Mineral Ave. just before the C-470 underpass.

Western Detour: Take the C-470 Bikeway Trail west on the south side of C-470 along Chatfield Lake. Continue right to pass underneath C-470 and turn east to stay on the C-470 Bikeway Trail. Join the Columbine Trail after crossing Chatfield Ave. Take the trail north along Chatfield Ave. as it turns into S Platte Canyon Rd. After crossing Mineral Ave. take a right and join the Mineral Ave. Trail, continue on and then connect back onto the Mary Cary Trail.

Eastern Detour: Follow the Highline Canal Trail east, then turn left on the trail before the Centennial Trail begins and continue as it goes under County Line Rd. Then continue north on the Highline Canal Trail to the bike lane on Mineral Ave. Take Mineral Ave. across Santa Fe Dr., then get on the Railroad Spur Trail back onto Mary Carter Trail.

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