I-490 Western Gateway Project (from the Erie Canal to Genesee River)

Erdman Anthony provided preliminary and final design services for reconstruction and capacity improvements along 3.5 miles of I-490, a major six-lane highway that bisects Rochester, including 20 bridges in this section from the Erie Canal to the Genesee River. Our staff prepared a design report that recommended corrections to deficiencies such as traffic volume inadequacy, pavement condition, and an accident history that included three fatalities. To develop the report, the traffic for the corridor was analyzed to determine if additional lanes were necessary. In addition, the ramp intersections were analyzed to decide if new signals, signal improvements, or left-turn lanes were necessary.

Numerous public meetings were held to obtain neighborhood/community input on the project. Erdman Anthony worked closely with the City of Rochester and a project aesthetics committee to modify the design so that it was acceptable to all parties. Erdman Anthony also managed the preparation of extensive Phase I and II hazardous waste assessments, according to NYSDOT guidelines. Numerous commercial and industrial sites required remedial work prior to the proposed I-490 reconstruction.

The final design portion was divided into five phases, the first of which called for the rehabilitation of three bridges and one pedestrian bridge crossing the expressway. Erdman Anthony’s design for these structures included aesthetic improvements such as artwork and decorative lighting. We also helped coordinate public arts competitions to encourage the incorporation of local art on noise barriers and other portions of the design, enhancing the unique character of this highly visible area.

Our team designed the Troup Howell Bridge replacement as the third phase of this project. Erdman Anthony worked in conjunction with an aesthetics committee made up of neighborhood groups, consultants, and city officials to develop a signature bridge as the gateway to the central business district, Rochester canal harbor, and I-490.

The resulting design incorporated a 1,180-foot-long, three-member steel arch structure that is slightly wider than the former bridge to accommodate 6-foot shoulders, making it the widest three-member arch in the country. Design features contributing to the bridge’s appeal include a low profile that enhances sight distance along I-490, rounded support beams and visible cable support linkages to enhance visual interest, a fanned array of support cables to echo the shape of the arch, and lighted pylons to symbolize the gateway to the City. The bridge’s underside includes pedestrian overlook areas along both sides of the river and walkways connecting these areas to existing pedestrian amenities, facilitating the creation of a future riverfront park system.

The fourth phase included the rehabilitation of I-490 by installing new asphalt pavement, rehabilitating 20 bridges, replacing one bridge, and constructing two new ramps. 

Project Accolades

  • Project Awards
  • 2012 Reshaping Rochester Award - The Rochester Regional Community Design Center (RRCDC)
  • 2012 Gold Award - American Council of Engineering Companies, New York (ACEC)
  • 2012 Award - New York State Construction Project of the Year, (NYSSPE)

Project Details


Rochester, NY


New York State Department of Transportation, Region 4

Construction Cost


Project Contact

William McCormick, PE
  • William McCormick, PE
  • 585-427-8888 x 1080
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