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SR 292 Over Perdido Keys – Challenges to Field Metalizing of Steel Superstructure

SR 292 Over Perdido Keys – Challenges to Field Metalizing of Steel Superstructure
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The Florida Department of Transportation (FDOT) undertook recoating of the superstructure steel components of the SR 292 high-level bridge over the Intracoastal Water Way (ICWW) in Perdido Key, Florida, which carries one lane of traffic in each direction and is the only connection between Perdido Key and the mainland. Due to the significant impact to businesses and the public, including tourists, from any proposed lane closures, FDOT looked for other means to address the deteriorating paint system, provide for a longer service life, and complete the work without any lane closures on the bridge. 

Product Number: 51218-143-SG
Author: Greg Richards, Chris Sasher
Publication Date: 2018
Industries: Highways & Bridges , Coatings
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$20.00
$20.00

The Florida Department of Transportation (FDOT) undertook recoating of the superstructure steel components of the SR 292 high-level bridge over the Intracoastal Water Way (ICWW) in Perdido Key, Florida, which carries one lane of traffic in each direction and is the only connection between Perdido Key and the mainland. Due to the significant impact to businesses and the public, including tourists, from any proposed lane closures, FDOT looked for other means to address the deteriorating paint system, provide for a longer service life, and complete the work without any lane closures on the bridge. This paper describes the project’s repair design and highlights the design issues, particularly the restrictions on having no lane closures and all work being completed from below deck; the design decision to use field metalizing on the superstructure steel components to reduce future maintenance needs and rehabilitation; replacement of deteriorated steel components; modifications to the FDOT specifications to address the metalizing work; and the decisions made during construction to allow for the timely completion of the project. The paper includes typical metalizing processes applied to the project to assure a successful installation.

The Florida Department of Transportation (FDOT) undertook recoating of the superstructure steel components of the SR 292 high-level bridge over the Intracoastal Water Way (ICWW) in Perdido Key, Florida, which carries one lane of traffic in each direction and is the only connection between Perdido Key and the mainland. Due to the significant impact to businesses and the public, including tourists, from any proposed lane closures, FDOT looked for other means to address the deteriorating paint system, provide for a longer service life, and complete the work without any lane closures on the bridge. This paper describes the project’s repair design and highlights the design issues, particularly the restrictions on having no lane closures and all work being completed from below deck; the design decision to use field metalizing on the superstructure steel components to reduce future maintenance needs and rehabilitation; replacement of deteriorated steel components; modifications to the FDOT specifications to address the metalizing work; and the decisions made during construction to allow for the timely completion of the project. The paper includes typical metalizing processes applied to the project to assure a successful installation.

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