SR 24 Williams Gateway Freeway

The new one-mile segment of SR 24 Williams Gateway Freeway is the beginning of a new freeway corridor in southeast Maricopa County and is being described as “a major catalyst for growth.”  The freeway-to-freeway interchange provides access to the underdeveloped area east of the Phoenix-Mesa Gateway airport that “used to be referred to as the edge of the world, because it was,” said former Mesa Mayor Scott Smith. “It is no longer that.”

Stanley Consultants was the prime designer on this $100 million project, which included the design and construction of a new urban freeway with a four-level fully directional urban traffic interchange and an interim half urban compact diamond traffic interchange. Major features of this complex project include:

  • One mile of new urban freeway on SR 24, from SR 202L to Ellsworth Road, including two new multi-span precast AASHTO girder bridges over a flood control channel and an arterial street.
  • Two miles of freeway widening on SR 202L, including widening of an existing post-tensioned box girder bridge.
  • Four new freeway-to-freeway traffic interchange ramps, which include four multi-span fly-over bridges.  The new directional ramp structures are cast-in-place post-tensioned box girder bridges.
  • Two new service traffic interchange ramps connecting to Ellsworth Road.
  • Major and minor arterial street reconstruction.
  • Relocation of existing power, communication, natural gas, water and sewer facilities.
  • Complex construction phasing with detours and extensive traffic control.
  • Extensive coordination with the DOT, FAA, utilities and local agencies.

Construction began in April 2012 and was opened to traffic in May 2014.