SR 347 at UPRR


Ames reconstructed two miles of State Route 347 in Maricopa, Arizona, in a multi-year project that included a grade separation to elevate the route over a railway. As the city’s main transportation corridor, SR 347 was often congested because of the at-grade crossing with UPRR, with traffic stopping for passing trains up to 60 times per day. The crossing was also a familiar site for Ames crews, having built the second mainline track for the UPRR Sunset Route in 2008.

In addition to the new flyover, Ames performed a six-lane realignment of three additional intersections. Project scope included new three-span and one-span precast girder bridges over the railway, three MSE walls, grading, aggregate base and asphaltic concrete, retaining walls, pipe culverts, curb and gutter, sidewalks, signals, and additional traffic control and landscaping elements.

To retain the charm and character of the historic city, the new flyover includes complex bridge columns with an aesthetic curvature of the structure that create a signature visual for the city. Ames crews custom-built the block-out used to create the columns.

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