Hawk Falls Bridge
PROJECT OVERVIEW
High Steel fabricated 3,500 tons of steel for the Pennsylvania Turnpike's new Hawk Falls Bridge. The 720-foot-long skewback steel deck arch bridge will carry the Turnpike's Northeast Extension (I-496) over Mud Run in Carbon County, PA. The project includes a single-span steel girder bridge crossing Hickory Run Road.
The overall length of the arch bridge is 720 feet, with a main 480-foot deck arch span and two, 60' I-girder spans on each end.
The bridge design features a two-hinged steel deck arch with three lines of arch ribs. Each arch rib is a built-up, welded box section approximately 4'-3" wide by 7'-6" tall. Because of its closed box sections, confined space requirements were important during fabrication of the 33 box girders, the largest of which are 75' long, and weigh 92 tons
The floor system of rolled beam stringers frames directly into built-up, welded I-section floor beams. The floor beams are designated as System Redundant Members (SRMs), a relatively new member designation in the steel industry that recognizes the redundancy of steel structures.
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Rendering Photos Courtesy of the PA Turnpike.
Aerial Photos Courtesy of Modjeski & Masters
Jobsite Photos Courtesy of Trumbull Corporation
Steel Fabrication
- Scope Deck Arch Superstructure
- Steel Members arch rib box girders, stringers, floor beams, columns, I-girders, bearing assemblies
Project Details
Project Specs
- Bridge Type: Deck Arch
- Steel Tonnage: 3,500 Tons
- Steel Type: GR 50W
- Coating System: Weathering steel; partially painted
Project Team
- Project Owner: Pennsylvania Turnpike
- General Contractor: Trumbull Corporation
- Design Consultant: Modjeski & Masters
- Steel Fabricator: High Steel Structures LLC
