Dittmar Road Bridge

Project includes preliminary structural engineering, detailed design, construction documents, and presentation of bridge design methods. The width of the bridge is 80'-0" and the span of the bridge is 80'-0" long. This new bridge is to replace an existing concrete bridge and is designed for 100- year flood. This bridge is designed according to AASHTO Standard Specifications for Highway Bridges and meets the requirements of the City of Austin Standards and Standard Specifications. It has two opposite traffic lanes, two pedestrian lanes and two bicycle lanes. The bridge structure is constructed of precast box beams, which are 48 inches wide, 28 inches deep, and is topped with concrete slab. The abutments are cast in place concrete retaining wall on 30 ft. deep drilled piers into limestone. Due to the presence of numerous utility lines under the bridge, pier locations are designed to miss the lines. Location: Austin, Texas

Circle S Road Bridge

The proposed bridge is to replace an existing short, single span concrete bridge that was built in 1915 and has suffered extensive damage due to the substructure and surrounding drainage structure caused by erosion. New bridge shall be designed above flood plain and for HS-20 and pedestrian loadings. The plan dimensions are 25 ft. long by 30 ft. wide. The new bridge is constructed of precast arch culvert supported by cast in place shallow foundation. Head walls are also cast in place on top of the culvert. Project also includes inlet and outfall structures, wing walls, and retaining walls up to 12 ft. tall. Location: Austin, Texas