The Waterloo Park project, Austin, Texas, specified that the flood waters stretching from Waterloo Park to Lady Bird Lake be diverted 70 feet below ground through a concrete shaft and tunnel to be discharged into Lady Bird Lake 1 mile downstream. The project removed an estimated 50 acres from the floodplain in Downtown Austin.
Stiver Engineering provided construction engineering by designing the cut through the topsoil and limestone at the headworks facility in Waterloo Park. We also designed the cast-in-place reinforced concrete for the first section of the tunnel, the reinforced concrete and rock bolt retaining walls upstream of the intake structure, and a reinforced concrete temporary bulkhead within the tunnel.