US 60 Widening

  • Location:

    Phoenix, Arizona

  • Client:

    Arizona Department of Transportation

  • Construction Value:

    $196,000,000

  • Delivery Method:

    Design-Build

  • Year Completed:

    2003

Features & Highlights

  • 13 miles of urban freeway widened
  • Project completed in two years
Project Overview

Sundt and a joint venture partner widened 13 miles of the urban freeway, which included widening 12 bridges, adding carpool and auxiliary lanes, sound walls, lights and overhead message boards. The design work proceeded simultaneously with the construction process. The intent was to keep at least six lanes of traffic open during the day and to limit restrictions to nights and weekends. As a result of an accelerated schedule and the design/build concept, what was once a six-year project finished in two years.

Cost savings ideas included eliminating the truck haul off of 1.2 million cubic yards of excess earthen material by constructing large berms used for sound attenuation.  This in turn reduced the planned quantity of block soundwall structure required; utilization of soil nail retaining walls versus conventional cast-in-place walls; modifying the sequence of construction and MOT that reduced the number of times I-10 needed to be closed; utilization of stepped masonry pilasters to strengthen and heighten existing masonry walls.

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Market Leaders

“Sundt’s services during preconstruction were invaluable. Sundt’s constructability and value engineering input saved time and money, resulting in the project finishing six months ahead of schedule.”

Floyd Roehrich, Deputy Director, Arizona Department of Transportation

Awards & Accolades

2003 Marvin M. Black Award, AGC of America

2003 Best Project, Design-Build Over $5 Million, Southwest Contractor

2003 Award for Engineering Excellence, American Council of Engineering Companies