Crews Start Project to Reinforce Rock Slip Area on CO 133 McClure Pass

GUNNISON COUNTY—On Monday, May 21, crews will start work that will reinforce a fault (aka, a rock slip) on Colorado Highway 133, on the south side of McClure Pass. Work on this $1.3 million project is expected to be complete in mid-October, weather permitting.

Work will stabilize and reinforce a landslide below the highway to reduce further slipping or future rockslides. Specifically, crews will:

• Excavate about 3,750 tons (or 3,000 cubic yards) of rock.
• Drill about 18, 60-foot-deep caissons, into which they'll position vertical and horizontal reinforcing supports (or rebar cages).
• Install 24-inch-diameter rebar cages—circular sets of 18, 60-foot-long sections of rebar.
• Build a tieback system, which incorporates high-strength steel-strand anchors that are grouted in-place to anchor the vertical caissons.
• Repair and rebuild the road.
• Complete earthwork and erosion control measures.
• Stripe and add signs.

Travel Impacts

• Through mid-October 2018:
  • Work hours are 7 a.m. - 7 p.m., Monday through Friday
  • Single-lane, alternating travel through the work zone with periodic traffic holds of up to 15 minutes
  • Delays exceeding 15 minutes
  • Expect a 12-foot width restriction
  • Avoid distractions when driving through the work zone and go slow

Adjacent Work

This summer/fall, there will be two projects underway on CO 133:

1. CO 133 Bowie Resurfacing & Bridge Repair:
   • April 23 to Sept. 30, 2018
   • mile points 11.43 to 23.8, further south
   • See the project website; 970-433-1853; [email protected]
     
     
2. CO 133 McClure Pass to Redstone Resurfacing
   • May - September 2018
   • mile points 43 to 50, north of the slip project
   • See the project website.