CO 133 McClure Pass Fault Repairs

Project Overview

On May 14, 2018, CDOT began reinforcing a fault, aka a rock slip, on Colorado Highway 133—on the south side of McClure Pass—in Gunnison County.

Specific work includes stabilizing and reinforcing a landslide below the roadway to reduce the risk of further slipping or future rockslides. Work items will involve:

• excavating approximately 3,750 tons (or 3,000 cubic yards) of rock material;
• drilling approximately 18, 60-foot-deep caissons, into which vertical and horizontal reinforcing supports (or rebar cages) will be positioned;
• installing rebar cages, a circular set of 18, 60-foot sections of rebar that are 24 inches in diameter;
• constructing a tieback system, which incorporates high-strength steel strand anchors, that are grouted in-place to anchor the vertical caissons.
• repairing and reconstructing the damaged roadway;
• conducting earthwork and erosion control; and
• adding new striping and signage.

Schedule

• Work hours are 7 a.m. to 7 p.m., Monday through Friday.

Travel Impacts

• Through mid-October 2018, travelers can expect single-lane, alternating travel, and periodic full traffic holds of up to 15 minutes.
  • Please note: Delays will exceed 15 minutes, as traffic queues must be cleared in each direction.
• There will be a 10-foot width restriction in place during work hours.
• Please avoid distractions when driving through the work zone, and go Slow for the Cone Zone!

Adjacent Projects

This summer/fall, there will two additional (and separate) projects underway on CO 133:

• CO 133 Bowie Resurfacing & Bridge Repair
  April 23 through Sept. 30, 2018
  Work will be completed between mile points 11.43 and 23.4, south of this project
• CO 133 McClure Pass to Redstone Resurfacing
  May - September 2018
  Work will be complete between mile points 43 and 50, north of this project