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 10 p.m. and 5:30 a.m. on Wednesday, December 12 and Thursday, December 13 westbound C-470 from Lucent to Santa Fe will be closed to install permanent overhead signs and toll structures. To detour:
    1. Exit Lucent Blvd. westbound off-ramp.
    2. Turn right onto northbound Lucent Blvd. and proceed to County Line Rd. Turn left.
    3. Continue on County Line Rd. until Santa Fe Dr.
    4. Turn left onto Santa Fe Dr., then turn right onto the westbound C-470 on-ramp.
  • Starting at 10 p.m. on Wednesday, December 12 until 5:30 a.m. on Thursday, December 13, a full closure of the eastbound C-470 ramp to southbound I-25 will take place to shift temporary concrete barrier and to conduct bridge work. The detour will be:
    1. Take the eastbound C-470 ramp to northbound I-25.
    2. Exit on Dry Creek Rd.
    3. Turn left and continue back onto southbound I-25.
  • From 10 p.m. Thursday, December 13 through 5:30 a.m. Friday, December 14, crews will close eastbound C-470 at the E-470 interchange to shift lanes south in order to begin paving operations in the I-25 interchange area. To detour:
    1. Take eastbound C-470 to southbound I-25, exit Lincoln Ave.
    2. Take Lincoln Ave. east and continue onto northbound I-25.
    3. Take the ramp to northbound E-470.
  • From 9:30 p.m. Friday, December 14 until 7:30 a.m. Saturday, December 15, westbound C-470 between Quebec St. and University Blvd. will be closed to shift westbound traffic. Detour will be:
    1. Exit University Blvd. eastbound off-ramp then turn left onto northbound University Blvd.
    2. Proceed to County Line Rd. and turn right.
    3. Continue on County Line Rd. until Quebec St. Turn right onto southbound Quebec.
    4. Continue south to the eastbound C-470 on-ramp.
  • Between 12 a.m. and 8 a.m. on Sunday, December 20 the northbound and southbound I-25 ramps to westbound C-470 will be closed to perform bridge pier work. The detour will be:
  1. Take northbound and southbound I-25 to northbound E-470 Peoria Exit.
  2. Take Peoria to southbound E-470 and continue onto westbound C-470. No tolls will be charged during the closure.
  • From 10 p.m. Thursday, December 20 until 5:30 a.m. Friday, December 21, westbound C-470 from southbound E-470 to Yosemite St. will be closed again to shift traffic for paving. To detour:
    1. Take southbound E-470 to southbound I-25 and exit onto Lincoln Ave west.
    2. Continue on Lincoln Ave. west to Yosemite St. and turn right.
    3. Take Yosemite St. north to the westbound C-470 on-ramp.
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