Adam RollinsThe city of Austin will spend $174.8 million to install a wastewater interceptor, a transmission line and improve a dewatering facility. All projects are in the design phase, with construction estimated to end by 2030.
Austin will spend $105.2 million to complete the Williamson Creek Wastewater Interceptor project. The existing pipes are nearly at capacity and in poor condition. Plans include installing approximately 19,000 feet of a 72-inch diameter gravity interceptor pipeline. The project will increase wastewater capacity and reduce the risk of future sanitary sewer overflows.
The project will also replace multiple local wastewater pipelines. The replacement pipelines will divert and reconnect wastewater flows to the new interceptor. The city will place the interceptor approximately 40-60 feet underground. Construction is expected to begin in spring 2025.
The city will use $43 million to install the McNeil Drive Water Transmission Main. The project will connect the Austin Water Jollyville Reservoir to the downstream connecting point with 8,500 linear feet of a 72-inch diameter pipeline. The city will repurpose the current line to serve another area after it finishes installing the replacement line. Construction is anticipated to begin in spring 2025.
Austin will use $26.6 million to improve the Hornsby Bend Dewatering Facility and East Stormwater Station. The facility has excessive corrosion due to caustic air. Plans include replacing the roof, HVAC system and electrical system. Construction is estimated to begin in winter 2024.
