Coombs Creek Trail

The Coombs Creek Trail project is a connector trail initiative in Dallas that required complex structural and geotechnical solutions within a highly constrained site. The primary feature of the project is a three-span, 290-foot pedestrian bridge crossing Coombs Creek, with one end supported by a U.S. Army Corps of Engineers levee. The bridge serves as a critical link in the hike and bike trail network while navigating floodplain, levee, and access limitations. Bridge foundations were constructed using large-diameter drilled shafts, including 72-inch shafts extending approximately 60 feet deep and 48-inch shafts extending more than 80 feet deep. Construction was challenged by extremely sandy soils and significant groundwater encountered during drilling operations. To address these conditions, RoeschCo's team developed a double-cased and permanently cased shaft solution that maintained structural integrity while allowing grout to fill voids created by soil caving during excavation. In addition to the bridge, the project included expansion of the existing levee embankment to accommodate trail access, drainage improvements throughout the corridor, and installation of a pedestrian HAWK signal crossing to improve safety at roadway intersections.