- Arizona Department of Transportation
- Skanska USA
- Maricopa County, Arizona
- Our Role
- Civil, Structural, Engineering, Maintenance of Traffic.
- 1 mile
- Construction Cost
- $20 million
- New Construction
- 10 months
- Project completed in 10 months because of Accelerated Bridge Construction
- Maintenance of Traffic solutions kept mainline I-10 open during critical times
- Improved traffic flow enhances the safety and welfare of the public.
Designated as a Key Commerce Corridor by the Arizona Department of Transportation (ADOT), Interstate 10 (I-10) is a critical component to ADOT’s goal to enhance and maintain the state’s access to 29 million consumers in Southern California and Central Texas. Because this section of I-10 accommodates an Average Daily Traffic count of nearly 70,000, the Department turned to the design-build team of Gannett Fleming and Skanska USA to construct a new traffic interchange (TI) in Goodyear, Arizona, just 20 miles west of Phoenix.
In addition to the new interchange, the design-build team widened the existing I-10 and improved Perryville Road as an arterial street. The project included removal and reconstruction of two new two-span AASHTO girder bridges, as well as replacing the existing single-span structures to accommodate the future six-lane Perryville Parkway. By utilizing effective design-build project delivery techniques and Accelerated Bridge Construction (ABC) strategies, the project team completed the project on time and within budget.
As the prime designer, Gannett Fleming provided engineering and construction phase services for the design-build project. In addition to the new interchange, ADOT presented the design-build team with a major challenge – to finish the I-10/Perryville Road TI ahead of the 303L/I-10 System TI, which was already nearing completion. By finishing both projects at the same time, all traffic control devices on I-10 could be removed concurrently, and this truck-laden stretch of I-10 would be open to traffic without further work zone impacts.
By implementing an innovative Maintenance of Traffic (MOT) plan to keep I-10 open and traffic flowing during construction, the design-build team was able to stay on schedule while minimizing traffic disruption. Rather than using the traditional practice of building one bridge at a time and then constructing directional crossovers to carry the I-10 traffic, the MOT plan constructed 75 percent of the interchange ramps in their final configuration and detoured the I-10 traffic onto the ramps to keep traffic moving during demolition and construction. The MOT plan and ABC solutions allowed the design-build team to complete the project in 10 months, meeting the client’s goal.
- Implementing an innovative Maintenance of Traffic plan
- Utilizing Accelerated Bridge Construction on two new two-span AASHTO girder bridges
- Using a site-specific conveyor belt system during excavation
- Overcoming a devastating 1,000-year storm event that occurred during the project
- Incorporating design features to accommodate the newly designed Perryville Parkway.
- No. 3 Road Project, 2015, Roads & Bridges, Top 10 Roads
- Grand Award, 2015, American Council of Engineering Companies of Arizona, Engineering Excellence Awards
- Transportation Partnering Excellence Award, 2014, Arizona Transportation Partnering Excellence Award Committee, Partnering Excellence Awards.