National Steel Bridge Alliance

Greenfield Arch Bridge

National Award Winner—Long Span

The Greenfield Arch bridge functions as a gateway arch to the greater Pittsburgh area for the over 85,000 cars that pass under the bridge each day. The structure takes numerous design cues from the original structure and captures the historic nature of the area.

“The challenges with terrain and traffic flow made for an exceptionally difficult project. The single span steel arch solution overcame those challenges while providing an elegant solution that complimented the original bridge,” said Amber Blanchard, PE, Minnesota Department of Transportation, a judge in the competition.

“The ability to preserve elements of the existing bridge and incorporate those touches into the new bridge is a nod to the past while providing a durable steel solution for the future,” added Michael Culmo, PE, CME Engineering, also a judge in the competition.

Prize Bridge Information

  • Year Awarded: 2018
  • Location: Pittsburgh, PA
  • Award Class: Long Span
  • Designer/EOR: HDR, Inc.
  • Fabricator: High Steel Structures LLC (AISC Member/AISC Certified)
  • Owner: City of Pittsburgh
  • General Contractor: Mosites Construction Company
  • Detailer: High Steel Structures LLC (AISC Member/AISC Certified)