Southeast Corridor Multi-Modal Project (TREX)
Owner: Colorado Department of Transportation
General Contractor: Kiewit
Schnabel Foundation Company’s was contracted to design and construct ten permanent soldier beam and lagging tieback walls finished with a 10-inch permanent shotcrete facing for the Southeast Corridor Multi-Modal Project (TREX) in Denver, Colorado. Schnabel completed around 4,000 linear feet of walls with a total surface area of over 82,000 square feet. The walls varied in height from 15 to 28 feet.
Lateral support for the walls was provided by one or two tiers of permanent tiebacks. The tiebacks were also designed to take the additional load from the sound walls and crash barriers attached to the top of the walls. In addition to the tieback walls, Schnabel also installed over 117 permanent tieback anchors for bridge abutments at three locations. The tiebacks were both pressure injected and open hole rock tiebacks and measured up to 85 ft in length.