The American Association of State Highway and Transportation Officials recently released Maintenance Guidelines for Steel Bridges to Address Fatigue Cracking and Details at Risk of Constraint-Induced Fracture, G14.1-2021 – a joint publication between AASHTO and the National Steel Bridge Alliance.
[Above graphic by AASHTO]
This publication provides guidelines for the maintenance actions to address fatigue cracking, as well as details at risk of constraint-induced fracture or CIF in steel bridges.
The guide also provides a synthesis of best practices from published literature, project reports, plus both historical and on-going research projects, as well as input from industry professionals.
Intended to be a practical reference text for a wide range of audiences, including maintenance contractors, asset managers, and design engineers, this publication provides detailed descriptions of the driving causes of fatigue cracking and CIF in steel bridges and accepted methods for repair or retrofit.