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Structures
Over the past 30 years, Horrocks Engineers has completed more then 200 transportation and water resource structures in Utah, Wyoming, and Colorado, ranging from box culverts to single span concrete structures to multi-span highway and railroad bridges. We offer our clients quality, award-winning personnel in structures design for the following types of structures:
  • Highway/Interchange Structures
  • Railroad Structures
  • Pedestrian Bridges
  • Box Culverts
  • Retaining Walls
  • Water Storage Facilities
The Legacy Parkway - Awarded to the joint venture team of Carter + Burgess, Horrocks Engineers and H.W. Lochner, the Legacy Parkway will be a four-lane, limited access, divided highway extending approximately 14 miles from I-215 at 2100 North in North Salt Lake northward to the junction of I-15 and U.S. Highway 89 near Farmington. A multiple-use trail for pedestrians, bicyclists, and equestrians will parallel the Parkway, which is being designed to blend cohesively with the built and natural environments through which it passes. The Horrocks Engineering team was responsible for the roadway design of Segment #3 (Glovers Lane to I-15 and US-89); the design of all Structures along the corridor; and right-of-way engineering, utilities coordination, and surveying for the entire project. The Legacy Parkway project presented a whole new arena for structures design. Several bridges were redesigned in order to fit with the new layout and scope of the project. However, several bridges from the original design/build project were retained in the interchange areas in order to use existing materials. Using the existing design build metric plan sets and tying the new roadway design into the profiles presented a series of challenges. In order to achieve a balance of form and beauty, the structures within the Legacy Parkway corridor were designed with a variety of aesthetic treatments. These treatments added to the travel experience of both pedestrians, who use the trail that parallels the parkway and motorists on the parkway. The completed project consisted of 3 segments, 22 bridges, 11 culverts, multiple drainage headwalls, multiple timber boardwalks, and more than 55 retaining walls.
State Street Widening and TRAX Bridge Reconstruction Project - Horrocks Engineers recently collaborated with The Utah Department of Transportation (UDOT), in cooperation with Utah Transit Authority (UTA) and Midvale City, to complete final design for the State Street (US-89) Between 8000 South and 7720 South Widening and TRAX Bridge Replacement project.
The project includes:
  • Environmental Categorical Exclusion Level III
  • Constructing two new two-span, steel through-girder bridges with concrete facades to accommodate 7-lanes on State Street
  • TRAX rail improvements to provide a two-track UTA TRAX service
  • Cross-section improvements, including four 12-ft travel lanes, 14-ft median/left turn lane, 12-ft shoulders, and 8.5-ft sidewalks under the bridge
  • Storm drain improvements, including a new detention facility in State Street,lining of existing pipe and the addition of manholes in the local streets
  • Phased construction to allow continued TRAX operation
Colorado River Pedestrian Bridge - Spanning over 600 feet across the Colorado River, the pedestrian bridge provides a safe river crossing for pedestrians and bicyclists. Located just East of the existing SR-191 bridge, the Steel Truss Pedestrian bridge of 3 spans provides a perfect balance of form and function with minimal interference to the beauty of the Moab area. This is part of the improvements to be done in the area to improve tourist access to the beauty of the Colorado River. A new trail is to be constructed along SR-128 from SR-191 to Negro Bill Canyon. Horrocks Engineers designed both the bridge and the trail. Throughout the entire design, several environmental and aesthetic issues were resolved to provide the best design for the environment and pedestrians.
Mall Drive Bridge - The City of St. George has initiated a project to relieve traffic congestion on River Road in St. George and Washington Field Drive in Washington City. The two cities are cooperating to add this new bridge across the Virgin River. A new roadway alignment will be designed to connect Mall Drive on the North and 3000 East on the South. Horrocks Engineers will provide design services for the Roadway, Bridge, River Hydraulics, Drainage, Utilities, Retaining Walls, Aesthetics and Landscaping, Right-of-way, and the Multi-use/Pedestrian Pathway along the river. Our team will also concentrate on the environmental requirements for a river crossing, which include several endangered species, archaeological and stream alteration permits.
Geneva Road Bridge Replacement - Many of the older bridges throughout Utah suffer from structural deficiencies. As a result, they are in need of replacement and widening to accommodate the growing demands on the roadway system. The Geneva Road Bridge over the Provo River was one of these bridges. The bridge was a bottleneck in the road and an unsafe obstacle for pedestrians to cross. The bridge replacement was a great opportunity to address all of the issues surrounding the crossing and provide a solution to these issues. The bridge was widened to accommodate current roadway requirements and future expansions. In order to provide safe passage for pedestrians, sidewalks and a bicycle path were added to the bridge. The Provo River Trail was connected to the bridge by way of a pedestrian culvert that passes under the roadway. The completed project provided a solution to issues presented and, in time, future expansion.