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Development of Advanced Connection Systems for Adjacent Concrete Box Beams

Project Information

Project ID: 
Project Status: 
Start Date: 
Monday, October 1, 2012
End Date: 
Friday, October 31, 2014
FHWA Program: 
FHWA Subprogram: 
FHWA Activity: 
Ultra-High Performance Concrete (UHPC)
FHWA Topics: 
Roads and Bridges--Construction and Project Management; Roads and Bridges--Design; Roads and Bridges--Structures; Research/Technologies--FHWA Research and Technology; Research/Technologies--Turner-Fairbank Highway Research Center (TFHRC)
TRT Terms: 
Concrete; Structures; Infrastructure; Bridges; Research; High Performance Concrete; Bridge Construction
FHWA Discipline: 
Construction and Project Management, Design, Structures
TRB Subject Area: 
Bridges and other structures, Materials, Research

Contact Information

First Name: 
Last Name: 
(202) 493-3122
Bridge Engineering Team
Office of Infrastructure Research and Development
Office Code: 

Project Details

Project Description: 

Project includes the full-scale structural testing of four independent connection systems for adjacent box beams. Each system will be tested under millions of cycles fatigue loads in order to replicate decades of distress on the bridge system. Two of the connection systems will include conventional grout and transverse posttensioning. Two of the connection systems will include field-cast Ultra-High Performance Concrete (UHPC) and no transverse posttensioning. Findings should include recommendations of anticipated behavior from good current practice systems as well as advanced systems that potentially offer simplified construction and better long-term performance.


This objective of this project is to advance the state-of-the-practice for longitudinal connections between adjacent box beams, thus allowing broader use of this very cost effective bridge superstructure system.