Sherman Minton Bridge
SHERMAN MINTON BRIDGE OVER OHIO RIVER – LOUISVILLE, KY
Contractor – Michael Baker
The Sherman Minton Bridge was opened in 1962 and carries 6 lanes of traffic on I-64 over the Ohio River between New Albany, IN, and Louisville, KY. The bridge is a double-deck tied arch bridge. The ties are fracture critical members and were fabricated with A514 Grade 100 “T-1” steel which has a history of hydrogen cracking issues. Previous inspections had found cracking on the bridge, but inconsistencies in reporting allowed these cracks to remain without further remediation until the current investigation. After the inspection, a bolted retrofit was installed along the length of the tie girders to increase the redundancy and load carrying capacity of this member.
Fish & Associates, Inc., performed both conventional and Phased Array ultrasonic testing (PAUT) in order to measure and correctly characterize weld cracks and flaws in support of this analysis. The critical nature of the findings resulted in the emergency closure of this major link carrying I-64 across the Ohio River and led to the implementation of a bolted retrofit strategy to reinforce the tie arch welds.
- Location: Louisville, KY