Expect Closures May 18-21 for Traffic Switch onto New Pavement for C-470 Express Lanes Project

May 14, 2018 - C-470 Express Lanes project reaches a major milestone


DOUGLAS COUNTY—Starting the night of Friday, May 18, travelers can expect two closures for traffic switches as part of the C-470 Express Lanes project:

  1. From 10:30 p.m. Friday, May 18 through 7 a.m. Saturday, May 19, CDOT will close eastbound C-470 from University Boulevard to Quebec Street as crews switch traffic onto new permanent concrete.
    New Pavement C-70 Express Lanes
    Detour for eastbound C-470 travelers onto either direction of I-25:
    1. Take eastbound C-470 to the Quebec Street off-ramp.
    2. Turn left onto Quebec Street, to County Line Road.
    3. Turn right onto County Line Road to northbound/southbound I-25 on-ramps.
    C-470 Express Lanes closed University to Quebec

  2. From 10 p.m. Sunday, May 20 to 5:30 a.m. Monday, May 21, crews will close eastbound C-470 from Quebec Street to I-25 to switch traffic onto new permanent pavement on the Acres Green Bridge.
    New Pavement C-470 Express Lanes 2 Detour for eastbound C-470 travelers onto either direction of I-25:
    1. Take eastbound C-470 to the Quebec Street off-ramp.
    2. Turn left onto Quebec Street, to County Line Road.
    3. Turn right onto County Line Road to the northbound/southbound I-25 on-ramps.
    Detour for eastbound C-470 travelers onto northbound E-470:
    1. Take eastbound C-470 to the Quebec Street off-ramp.
    2. Turn left onto Quebec Street to County Line Road, and turn right.
    3. Take County Line to Inverness Parkway.
    4. Take Inverness Parkway to Jamaica Street.
    5. Turn left onto Jamaica Street to the northbound E-470 on-ramp.
    Map: Eastbound C-470 at Quebec to I-25 closure
  • Follow detour signs accordingly and go slow for the cone zone.
  • Construction activities are weather dependent, and the schedule is subject to change.
  • For motorists on C-470, courtesy patrol is provided Monday through Friday from 6 a.m. to 9 a.m. and 3:30 p.m. to 6:30 p.m. to assist disabled vehicles at no cost to the driver.

More than 100,000 motorists currently use this segment of C-470 each day with volumes projected to increase 40 percent by 2035.

Project Info

The $276 million C-470 Express Lanes project will increase mobility and user choice along 12.5 miles between I-25 and Wadsworth Boulevard. In the westbound direction, two additional Express Lanes will be built from I-25 to Colorado Boulevard and one additional Express Lane from Colorado Boulevard to Wadsworth.

In the eastbound direction, one additional Express Lane will be constructed along the length of the project between I-25 and Wadsworth Boulevard. The project also includes full reconstruction of existing pavement, the addition of auxiliary lanes at selected locations, on- and off-ramp improvements, realignment of substandard curves, widening of existing bridges, replacing the bridges over the South Platte River, the installation of tolling equipment and new C-470 trail underpasses at Colorado and Quebec.

When complete, motorists will have the option to use the Express Lanes on C-470 for a faster, more reliable commute in exchange for paying a toll, or drive the general purpose lanes for free. Completion is scheduled for 2019.

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