MID-COAST CORRIDOR RETAINING WALLS

摘要

If you have spent time in San Diego, Calif., chances are you have seen the 2019 non-highway bridge award winner. The new Mid-Coast Corridor Retaining Walls extend the Light-rail infrastructure from the Old Town neighborhood of San Diego north to La Jolla, Calif., and provides a second heavy-rail track through the entire corridor. The walls were built along the railroad right-of-way to increase the width of the corridor and allow for three additional sets of railroad tracks to be constructed. The original design used soldier pile walls and mechanically stabilized earth to meet the project goals; however, the designers shifted to a precast concrete counterfort retention system when they recognized the many benefits that this solution would bring to the project, says Jeremy Kirkpatrick, precast concrete wall contractor with SRK Engineering. "Precast concrete elements significantly reduced the construction time by eliminating shoring, eliminating concrete-curing time, and reducing the delays associated with working within the active railroad corridor."