Using innovative design techniques and new technologies, Infrastructure Engineers specializes in structural engineering for complex and simple span bridges, as well as ancillary highway structures. Our robust Structures Division possesses a 23-year design portfolio and our structural engineers are experienced with American Association of State Highway and Transportation Officials (AASHTO) design procedures.
We are consistently expanding our structural expertise in planning and studies, structural analysis, and engineering design services for the following:
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S-80/S-327 Bridge Replacement Design over Cedar Creek and Overflow,
South Carolina Department of Transportation
Infrastructure Engineers provided the replacement design of two structurally deficient bridges and approach roadways on the Chesterfield/Darlington county line. The design included multi-span, cast-in-place concrete flat slab superstructures with 18-in. prestressed concrete pile bents. Accommodations for the removal of a temporary truss bridge were incorporated into the design. We worked closely with the South Carolina Department of Transportation in an expansive public involvement program as the bridges were closed during design and construction.
SR 312 over the Matanzas River Bridge Rehabilitation,
Florida Department of Transportation – District Two
Infrastructure Engineers provided rehabilitation design for the eastbound SR 312 bridge over the Matanzas River in St. Johns County, including cleaning, metalizing, and painting of the superstructure steel; cleaning and painting the steel bearing assemblies; replacing deteriorated anchor bolts; replacing deteriorated connection bolts; repairing cracks in the deck using high molecular weight methacrylates; adding downspout pipes for deck drainage; and miscellaneous repairs to the fender system in the channel. This pilot project is the first metalizing of an in-service bridge for the Florida Department of Transportation. The goal is to double its service life in the coastal and salt-rich environment by providing corrosion protection by sacrificial and barrier methods.
US-81 over Osage Creek Bridge Rehabilitation Design,
Oklahoma Department of Transportation
Infrastructure Engineers is performing statewide bridge rehabilitation design to extend the service life of Oklahoma’s bridges. One of our task orders was preparation of final PS&E documents for the rehabilitation of the US-81 bridge over Osage Creek in Grant County, Oklahoma. The rehabilitation design included deck replacement; painting and bearing repair; and repair of abutment seats, west abutment backwall, and piers. The task order also included replacing the approach slabs and extending the concrete rail; removing and replacing the existing guardrail system; and replacing the drains at the ends of bridge.
US 17 over Alligator Branch, Florida Department of Transportation, District One
Infrastructure Engineers provided engineering design services for twin bridges carrying US 17 (SR 35) over Alligator Branch in Hardee County, Florida. Each bridge is a 90-ft., two-span simply supported Type II AASHTO beam superstructure on 18-in. prestressed concrete pile bents. The twin bridges replaced an existing two-lane bridge to accommodate the widening of US 17 to a four-lane divided highway from Sweetwater Road to 3rd Avenue. The firm also provided post design services.