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Indian River Inlet Bridge

Sussex County, Delaware

Market Sector




Services Provided

Construction Engineering and Inspection, Program Management, Seismic Analysis and Design


Blueprint 22 Photography
Blueprint 22 Photography
Blueprint 22 Photography
Blueprint 22 Photography
Blueprint 22 Photography

T.Y. Lin International was retained by the Delaware Department of Transportation (DelDOT) to provide Technical Review Services for the procurement, design and construction of a replacement bridge to cross the Indian River Inlet. The current Indian River Inlet Bridge on SR 1 provides a critical link on the Eastern seaboard between Bethany Beach and Dewey Beach, Sussex County, Delaware. Due to severe scour experienced in the area, the bridge was scheduled for replacement with a new structure that will have an overall bridge length of 2,600 feet and a main span of 950 feet. The segmental, cable-stayed main span will allow the bridge to cross the inlet without any piers in the water and provides for the future potential widening of the inlet. The approaches consist of precast bulb-tee girders. The new bridge will have two 12-foot lanes for travel in each direction, a 10-foot wide outside shoulder, and a 4-foot wide inside shoulder in each direction. The minimum vertical clearance over the navigational channel will be 45 feet.

Project Highlights:

  • TYLI provided a full range of services, including owner's representative, program management, planning, preliminary engineering, construction, and operations oversight for this $150 million design-build project.
  • The largest single contract DelDOT has ever awarded in its 90+ year history.

As Technical Review Consultant, T.Y. Lin International was the owner representative for this Design-Build Project. The scope of services during the Procurement Phase included reviewing the RFP, the contract documents, the performance specifications and the special provisions. T.Y. Lin International also evaluated the technical proposals prepared by the shortlisted teams and assisted DelDOT’s Selection Panel scoring the technical proposals. During the Design Phase T.Y. Lin International provided general technical support to DelDOT and reviewed design submittals, issue papers and value engineering proposals. During the Construction Phase, T.Y. Lin International reviewed construction submittals, RFI’s and non-conformance reports. TYLI on-site engineers also provided support to DelDOT for construction engineering and inspection.