Upgrading capacity in a sewer segment with 10 new manholes and a jack and bore section
After our team completed a sewer capacity study, we identified a need for a new sewer upgrade to address a projected shortfall on Mabel Street in Tucson, Arizona. We worked with the Pima County Regional Wastewater Reclamation Department (PCRWRD) to support future upstream growth.
The project is located in a heavily populated residential area and near the downtown campus of Pima Community College. Our team worked under an on-call assignment to design a 3,200 linear foot (975 metres) of 8 to 12 inches (20 to 30 centimetres) new gravity sewer with 10 new manholes. To reduce the impact of construction on residents and traffic, we used jack and bore to install the sewer line under Stone Avenue, a major roadway. Having participated in the selection of the construction manager at risk (CMAR), our team worked closely with the contractor from 50 percent design and addressing constructability challenges. Weekly meetings provided construction coordination and responses to requests for information.
Working with the Arizona Department of Environmental Quality (ADEQ), we coordinated multiple discharge authorization phases, reducing diversion flow systems during construction and saving on project costs. Our team successfully delivered the upgraded capacity sewer segment for PCRWRD and the surrounding community.
At a Glance
- Offices
- Client
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- Pima County
Todd Crouthamel, Civil Engineer, Water
Any problem, engineering or otherwise, is most exciting when I can analyze all the individual components and piece back the best solution.
Kiersten Wangsvick, Principal, Civil Engineer, Water
I value any opportunity to apply my skills to community projects, especially in rural areas where there is a greater impact on quality of life.
Jim Wright, Project Manager, Transportation
Working on a dynamic portfolio of local transportation projects keeps me deeply connected to my community.
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