C-470 Express Lanes

c 470 express lanes

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The C-470 Express Lanes Segment 1 project will be constructed, managed, owned and operated by CDOT. The project is supported by the C-470 Corridor Coalition, and Douglas County is providing CDOT partial funding.

Funding all the scope items listed below for Segment 1 is contingent upon net proceeds from toll revenue projections, combined with RAMP funds and other revenue sources.

  • Adding two express lanes westbound from I 25 to Colorado, one tolled express lane between Colorado and Wadsworth westbound, and one tolled express lane eastbound from Platte Canyon Road to I 25.
  • Full reconstruction of the existing pavement.
  • Adding auxiliary lanes at selected locations.
  • Improving on-ramps and off-ramps to current standards (including ramp metering where appropriate), and including construction of direct-connect ramps to the westbound managed tolled lanes to accommodate traffic from I 25 northbound and southbound, and from E 470.
  • Realigning substandard curves.
  • Safety and operational improvements between I-25 and Quebec.
  • Widening of existing bridges throughout the project area.
  • Replacing the bridges over the South Platte River.
  • Installing water-quality features designed to current standards.
  • Installing noise barriers where required.
  • Installing ITS elements and tolling equipment.
  • Installing the appropriate signing and striping required for the proposed corridor improvements.

Additionally, the project includes adding grade separations for the C-470 multi-use trail at Colorado Boulevard and Quebec Street, where grade separations are required at the off-ramp, on-ramp and under Quebec Street.

HOV Lanes

There will be no HOV/carpool lanes within the C-470 corridor. The C-470 Express Lanes project will add Express Lanes in addition to the existing, free general-purpose lanes. Drivers will always have a choice of using the free existing lanes or paying a toll to use the Express Lane.

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