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
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
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.