Owner: City of Austin, Watershed Protection & Development Review Department
Contact: Mr. Gary jackson, P.E.
Title of person named above: Project Manager
Address of person named above: 505 Barton Springs Rd. Austin, TX 78704
Phone number: (512) 974-3374
Completion Date: 2013
Cost: $124 million
Project
Description:
The purpose of the project is to divert 100-year storm event flows from the lower Waller Creek channel. This would provide flood protection to 42 existing buildings, prevent the flooding of 12 roadway crossings, and reduce the width of the floodplain from up to 800 feet to the width of the channel. The reduction in floodplain produced by the project would significantly increase the amount of developable land area in the lower Waller Creek watershed. The tunnel would be 22 ft. in diameter and approximately 5000 ft. in length. The project originates in Waterloo Park and discharges into Lady Bird Lake. Significant inlet and outlet structures are required. Aesthetics of the structures are a major consideration due to their location in downtown, historical parklands. The inlet structure site would include a pond, a cone or morning-glory shaped inlet structure, and also a small dam, an access bridge, a pump building and significant landscaping enhancements. The inlet also includes mechanical screens to ensure operational reliability and a system to pump small quantities of water from the tunnel to the creek. This pumped water will augment the base flow in the creek and enhance its aesthetic appeal and water quality. The outlet structure includes a pond, an outlet shaft, and a de-watering pump system. An outdoor amphitheater is planned for the slopes surrounding the outlet pond.
The scope of this project also includes:
- Utility relocation within the limit of construction of the project’s site
- Relocation of 8-inch, 15-inch and 36-inch wastewater interceptors
- Development of MBE/WBE contracting strategies including:
- Subcontractor Participation Enhancement Program (SPEP) and Small Bid Packages (SBP)
- Technical memorandum that specifically defines subcontractor and small bid package opportunities
Services Provided:
CAS is principally responsible for designing wastewater interceptors, coordinating utility relocation, and identifying opportunities for increasing MBE/WBE participation. CAS is serving as a subconsultant to KBR / Espey Consultants Joint Venture. Currently, the project is heading to 60% design phase. |
