Projects  /  ABIA Reclaimed Water Pipeline Extension, Austin TX, Water Department

ABIA Reclaimed Water Pipeline Extension, Austin TX, Water Department

About ABIA Reclaimed Water Pipeline Extension, Austin TX, Water Department

The city of Austin began a water conservation project to expand its reclaimed water system within the city. The project called for a 16” HDPE DR-11, reclaimed water pipeline to be installed across the Colorado River that runs between the International Airport and the waste water treatment facility. The length of the proposed HDD river crossing was 1263ft. This process was viewed with great interest as it was the first time that the city water department had used the HDD method of installation for a waterline of this size.

The low side of the alignment, on the water treatment plant side of the river was the entry point and the Airport side of the river was the exit point of the drill. This is over 120ft. elevation gain from the entry to exit. The extreme topography made the exit side of the project almost inaccessible. The depth under the river was 45ft.with ground being hard rock. There were many issues on this project but nothing that the experienced crew of Trans American Underground had not seen before.

The pilot hole was bored and then reamed out to 20” in diameter.
The pipe installation process began and took about three hours to complete.
The complete project from mobilization to completion took 32days.