A leading design-build company, Schnabel has designed and constructed customized retaining walls for clients throughout the country. One of our more ambitious retaining walls was constructed as part of the Colorado Department of Transportation’s (CDOT) Southeast Corridor Multi-Modal Project (TREX) in Denver, Colorado.

City: Denver
State: Colorado
Owner: Colorado Department of Transportation
General Contractor: Kiewit
Design/Build Specialty Contractor: Schnabel Geostructural Design & Construction

Project Description:
Schnabel was contracted to design and construct ten permanent walls for CDOT’s Southeast Corridor Multi-Modal Project (TREX) in Denver, Colorado. The total wall length was around 4,000 linear feet with a total exposed face of over 82,000 square feet.

The walls varied in height from 15 to 28 feet and were constructed using steel soldier beams with timber lagging between. 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 feet in length. A 10-inch thick permanent shotcrete facing was constructed on the surface of the lagging.

Leveraging decades of field experience, we were able to provide comprehensive design-build solutions for the unique circumstances surrounding this particular project.