TRB Pubsindex
Text Size:
x

« Prev Next »

Return to Results | New Search

Bookmark and Share

Title:

Pre-Collapse Bridge Condition Ratings and Appraisals

Accession Number:

01592818

Record Type:

Component

Abstract:

A collection of condition and appraisal ratings of bridges prior to collapse are presented and analyzed to show commonalities among collapsed bridges from the State of New York. Bridge inspection data was collected from the National Bridge Inventory for an inspection date prior to the collapse date of a collapsed bridge dataset. Trends obtained from statistical analysis of existing data show 46% of collapsed bridges were structurally deficient prior to collapse, and a collapse rate of structurally deficient bridges is estimated to be 1/1,200 annually. Furthermore, age and structural deficiency are shown to be related as well as, structural deficiency and collapse, and age of structure at the time of collapse is contingent on collapse cause. It was determined that deterioration-caused and overload-caused bridge collapses are age related, but hydraulic-caused and collision-caused bridge collapses have no age determined relationship. Fifty seven percent of hydraulic-caused bridge collapses were given scour vulnerability ratings indicating foundations were stable for calculated scour and scour conditions. Collision caused bridge collapses appear to be contingent on the vertical clearance, roughly 90% had a vertical clearance less than 4.5m (14 ft-9 in.) in this investigation. Overload cause bridge collapses have a relationship with being load restricted. The overload caused collapse rate for a bridge that is load restricted is estimated to be 1/3,500 annually.

Supplemental Notes:

This paper was sponsored by TRB committee AHD35 Standing Committee on Bridge Management.

Monograph Accession #:

01584066

Report/Paper Numbers:

16-2955

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Cook, Wesley
Barr, Paul J

Pagination:

9p

Publication Date:

2016

Conference:

Transportation Research Board 95th Annual Meeting

Location: Washington DC, United States
Date: 2016-1-10 to 2016-1-14
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Identifier Terms:

National Bridge Inventory

Geographic Terms:

New York (State)

Subject Areas:

Bridges and other structures; Highways; Maintenance and Preservation

Source Data:

Transportation Research Board Annual Meeting 2016 Paper #16-2955

Files:

TRIS, TRB, ATRI

Created Date:

Jan 12 2016 5:19PM