NTSB Safety Recommendations H-09-25 and -26

[NTSB Press Releases <NTSBPressReleases@xxxxxxxx>]

Title: NTSB Safety Recommendations H-09-25 and -26

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                   NTSB SAFETY RECOMMENDATION

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National Transportation Safety Board

Washington, DC 20594

November 20, 2009

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NTSB Safety Recommendations H-09-25 and -26

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The NTSB makes the following recommendations to the American

Association of State Highway and Transportation Officials:

Work with the Federal Highway Administration to establish

performance and selection guidelines for bridge owners to

use to develop objective warrants for high-performance Test

Level Four, Five, and Six bridge railings applicable to new

construction and rehabilitation projects where railing

replacement is determined to be appropriate, and include the

guidelines in the Load and Resistance Factor Design (LRFD)

Bridge Design Specifications. (H-09-25)

Revise section 13 of the Load and Resistance Factor Design

(LRFD) Bridge Design Specifications to state that bridge

owners shall develop objective warrants for the selection

and use of high-performance Test Level Four, Five, and Six

bridge railings applicable to new construction and

rehabilitation projects where railing replacement is

determined to be appropriate. (H-09-26)

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http://www.ntsb.gov/recs/letters/2009/H09_25_26.pdf

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Electronic versions of letters may or may not include

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briefs, and aviation accident synopses may be found

on the NTSB website.

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