Main Street US 20A/NY 78 Reconstruction (East Aurora)

Erdman Anthony provided design services for the reconstruction of 1.3 miles of highway, including the drainage system along U.S. Route 20A/state Route 16/state Route 78, and Main Street between the traffic circle and the east Village line in East Aurora. The project included topographic survey and mapping, right-of-way mapping, analysis of several design alternatives, grading and drainage design, utility coordination, traffic signage, pavement markings, street lighting, landscaping, pavement design, and traffic maintenance. Our team investigated various layouts to provide safe and efficient operation for vehicles, bikes, and pedestrians. Context-sensitive design solutions were investigated and applied to maintain and improve the Village’s characteristics. A coordinated traffic signal system was installed to improve traffic flow. Erdman Anthony also designed a roundabout to replace the existing traffic circle and evaluated design options for additional roundabouts in the project area.

This project also included replacement of the entire water distribution and sanitary sewer collection systems within the project boundaries. Approximately 7,000 linear feet of existing vitrified clay tile sewers were replaced with a like amount of new PVC pipe ranging in diameter from 8 inches to 24 inches. Approximately 40 old brick manhole structures were replaced with precast concrete units. More than 200 new laterals were installed from the new sewer mains to right-of-way lines throughout the project limits. Vortex chambers were added to help facilitate separation of storm and sanitary flows. Design of this project coincided with the Village of East Aurora turning over the operation and maintenance of its sanitary sewer system to an Erie County Sewer District, so the project had to be designed to ECSD standards and coordinated with them as well. Another notable aspect of this project was the reconnection of a significant number of live sewers emanating from numerous side streets along Main Street. This required a great deal of around-the-clock sewer bypass pumping. Erdman Anthony worked closely with the Village and County to ensure that pumping would be conducted in the largely residential neighborhoods with minimal disruption and inconvenience.

Our team performed the required environmental studies, including coordination with the State Historic Preservation Office, geotechnical survey and mapping, and video survey of the existing drainage system. The oblique aerial photographs from a helicopter that we obtained were also included in the project scope. In addition, Erdman Anthony analyzed social, economic, and environmental considerations for each of the design alternatives and provided assistance with permits and certifications and a visual-impact assessment of the project corridor.

This project called for considerable public involvement, including coordination with a community task force and numerous public meetings. Erdman Anthony maintained a project newsletter and website, attended public events to disseminate information about this high-profile project and provided the detailed highway design.

Project Accolades

  • Project Awards
  • 2011 Silver Award - American Council of Engineering Companies, New York (ACEC)
  • 2010 Transportation Project of the Year - American Public Works Association (APWA), Western NY Branch

Project Details


East Aurora, NY


New York State Department of Transportation, Region 5

Construction Cost


Project Contact

Daniel Ziemianski, PE
  • Daniel Ziemianski, PE
  • 716-631-1241 x 1103
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