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Better Understanding of Weathering Steel Performance

Project Information

Project ID: 
Project Status: 
Start Date: 
Wednesday, June 1, 2011
End Date: 
Tuesday, September 30, 2014
FHWA Program: 
FHWA Subprogram: 
Asset Management, Structures, Design
FHWA Topics: 
Roads and Bridges--Asset Management; Roads and Bridges--Design; Roads and Bridges--Structures; Research/Technologies--Turner-Fairbank Highway Research Center (TFHRC)
TRT Terms: 
Weathering Steel; Corrosion; Infrastructure; Steel Bridges; Research; Preservation
FHWA Discipline: 
TRB Subject Area: 
Bridges and other structures, Maintenance and Preservation, Research

Contact Information

First Name: 
Last Name: 
(202) 493-3080
Email Address: 
Bridge Engineering Team
Office of Infrastructure Research and Development
Office Code: 

Project Details

Project Description: 

The contractor will evaluate (but is not limited to) the following: chloride concentration; humidity; industrial pollutant levels; temperature; time of wetness; and geometric factors, such as horizontal and vertical clearance, that may cause poor weathering steel performance. It is envisioned that project success will rely heavily on field performance evaluation of a sample of weathering steel bridges from across the entire United States. The contractor is expected to apply simple and meaningful test protocols, which can be used to define the macroenvironments and microenvironments, that influence weathering steel performance. In addition, the contractor shall document the relevant bridge geometric factors.


To better understand the macroenvironments or microenvironments and the geometric design variables that influence the corrosion performance of weathering steel. 

Partners and Other Sponsor/Managing/Performing Organizations: 


Deliverable Name: 
Final Report
Deliverable Type: 
Deliverable Description: 
The contractor will draft a final report outlining the selection of bridges in the United States for evaluation, the data collected from each bridge, and analysis of that data. The contractor should also recommend changes to the Federal Highway Administration's Technical Advisory 5140.22 based on the results of the field studies.