CHANDLER, Ariz. – Chandler City Council awarded construction and professional service agreements for a new 66-inch redundant sewer line located near the Loop 101 and Loop 202 interchange during their meeting on Sept. 18.
This project is part of an ongoing effort to update utility infrastructure in the city to proactively prevent system failures and provide redundancy.
In 2018, there was a large water main break northeast of Price Road and the Loop 101 and Loop 202 Santan Freeway interchange. This water line was accessed, repaired and put back into service. Findings from a subsequent water line assessment raised concerns about the large existing 66-inch sewer line that is adjacent to the water lines crossing under the freeway. This sewer line conveys wastewater flows from north Chandler south to the Ocotillo Water Reclamation Facility for treatment. This large sewer line was installed at the same time as the water main crossing during the construction of the freeway interchange. The city's 2018 Water, Wastewater, and Reclaimed Water Master Plan also analyzed the existing 66-inch sanitary sewer freeway crossing. The evaluation noted the lack of redundancy for the sanitary sewer system crossing the freeway from north to south and the need to rehabilitate the existing freeway sewer crossing.
The project scope of work consists of the new redundant 66-inch diameter gravity sewer line segment (approximately 700 linear feet) and steel casing for protection under the Loop 202 Santan Freeway. There will also be modifications to the 48-inch diameter gravity lines and four junction structures. In addition, the project will include rehabilitation utilizing cured-in-place pipe lining of the existing 66-inch diameter sewer, 48-inch diameter sewer and 30-inch diameter sewer lines.
The construction service agreement was awarded to B&F Contracting Inc. in an amount not to exceed $34,649,463.94. A related professional services agreement was awarded to Wilson Engineers, LLC, for an amount not to exceed $2,414,865.
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