Development of Adjustment Factors and Load Ratings via Statistical Analyses of the National Bridge Inventory Database [Technical Summary]

McVey, Isaac; Husic, Admin; Collins, William; Lequesne, Rémy; Roundy, Joshua

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Development of Adjustment Factors and Load Ratings via Statistical Analyses of the National Bridge Inventory Database [Technical Summary]

2026-01-01
By McVey, Isaac ; Husic, Admin ; Collins, William ; ...

File Language:

English

Details

Creators:

McVey, Isaac ; Husic, Admin ; Collins, William ; Lequesne, Rémy ; Roundy, Joshua
Corporate Creators:

University of Kansas. Dept. of Civil, Environmental and Architectural Engineering
Corporate Contributors:

Kansas Department of Transportation. Bureau of Research ; United States. Department of Transportation. Federal Highway Administration
Subject/TRT Terms:

Adjustment Factors Bridge Performance Bridges Inventory Control Load Factor Serviceability Statistical Analysis Structural Health Monitoring
Resource Type:

Brief
Geographical Coverage:

United States ; Kansas
Edition:

Technical Summary
Corporate Publisher:

Kansas Department of Transportation. Bureau of Research
Abstract:

The primary objective of this study was to develop and evaluate a statistical model using the National Bridge Inventory (NBI) database to establish baseline load ratings for bridges in Kansas. A linear regression model was used to identify key variables, such as age and bridge condition, that correlate with recorded inventory and operating load ratings. This method can produce an expected load rating for most concrete bridges in Kansas, establish baseline load ratings for structures without prior ratings, designate adjustment factors to adjust load ratings to account for bridge condition degradation, and validate model predictions for recorded load ratings. This approach answers the following question for a given bridge: Knowing nothing more about the structure than what is available within the NBI, what is the expected rating based on similar bridges in similar condition within Kansas?
Format:

PDF
Funding:

K-TRAN: KU-22-2
Collection(s):

US Transportation Collection
Main Document Checksum:

urn:sha-512:c433767ee472f838af230d2047a00cbf981d835c855ae9812584cea1daf5b3c2eb32c2f12ffa076bfbf6597b06dfadd3ebee85c7100aac6a9df810711dd68ce1
Download URL:

https://rosap.ntl.bts.gov/view/dot/88868/dot_88868_DS1.pdf
File Type:

[PDF - 232.09 KB ]

File Language:

English

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