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City of Goodyear Turns to Design-Build

City of Goodyear Turns to Design-Build

Brad Tackett, P.E.
Published In: 
Water Utility Infrastructure Management (UIM),  
December 2009

The City of Goodyear, Arizona, located southwest of Phoenix, was founded by Paul Litchfield of Goodyear Tire and Rubber Company in 1917 and incorporated as a city in 1946. The city has annexed approximately 188 square miles with a planning area just under 246 square miles and a current population of 62,550. Similar to all municipalities in the Phoenix metro area, the City of Goodyear grew at an astonishing 16 percent each year from 2000 to 2006 as people flocked to Arizona. The impact of this fast paced growth rate was that the City had to play “catch-up” with its water and wastewater infrastructure to keep pace with demands. When the City was obligated to construct multiple water and sewer pipelines in order to meet land developer agreements, they turned to Hunter Contracting Co. and Carollo Engineers, P.C. to design and build various water and wastewater pipelines throughout the City of Goodyear. The project met developer and City needs and demonstrated that the design-build process can deliver cost-effective, innovative, and high quality results for a fast paced construction schedule.

In late 2005, Hunter Contracting Co. and Carollo Engineers were retained, using the qualifications-based selection (QBS) process, to design and build various water and wastewater pipelines throughout the City of Goodyear. The City indicated the pipeline sizes and locations that were to be designed and constructed, including an interconnect to a neighboring potable water supplier as well as an existing well emergency pipeline connection. The overall D/B Contract entailed coordination with many stakeholders and agencies including the City of Goodyear Engineering and Development Services Department, the Arizona Department of Transportation (ADOT), Roosevelt Irrigation District (RID), Litchfield Park Service Company (LPSCo), Maricopa County Flood Control District (MCFCD), other design consultants, and private land developers. The water infrastructure projects consisted of five separate construction packages totaling approximately 2 miles of 16-inch ductile iron pipe (DIP), 800 linear feet (LF) of 36-inch DIP, 475 LF of 12-inch DIP, 720 LF of 36-inch high density polyethylene pipe (HDPE), 710 LF of 16-inch HDPE, and 710 LF of 12-inch HDPE. A 700 LF precast concrete utility tunnel was also utilized. The sewer infrastructure projects consisted of four construction packages utilizing the bore and jack trenchless construction method as well as open trench construction and totaled approximately 915 LF (boring), and approximately 9,300 LF of 12-inch and 15-inch PVC sewer pipe (open trench). There were a total of nine separate submittal packages in order to expedite the jurisdiction review and approval process.

With a responsive design-build team, a City can rely on the open communication and coordination that it takes to complete a successful project on a fast paced schedule. If a standard design-bid-build project delivery method was utilized for the above two project examples, the selected contractor would have had numerous change orders and schedule slippage. But since for this project, the Town of Goodyear, Hunter Contracting, and Carollo Engineers were able to coordinate the design and multiple agency approvals; the project was successful and delivered on schedule. Overall, the design-build delivery method has provided the City of Goodyear with a single point of responsibility for critical infrastructure expansion and development with cost and schedule certainty.

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Tackett, Brad. “City of Goodyear Turns to Design Build” Water Utility Infrastructure Management. Pp 19-20. November/December 2009.