Application of Close-range Terrestrial Photogrammetry to Bridge Structures: Final Report

Report No: 85-R40

Published in 1985

About the report:

A field application of close-range terrestrial photogrammetry to the measurement of small order of magnitude structural displacements and differences in elevation was conducted. A Jena UMK 10/1318 camera was used to take the photographs used in the evaluations. Measurements of the deflections of steel girders on several bridges suggest that accuracies on the order of 1/8 in can be achieved with normal care using the 0MK 10/1318 camera. In addition, close-range terrestrial photogrammetry can be used for other bridge applications such as for deck condition surveys. By using this technique for condition surveys, the need for taking hand measurements and preparing sketches in the field is eliminated. The photographs provide a permanent record which can be used as a reference to evaluate potential changes in the condition of the deck or to gage structural movements. Where permanent records of bridge evaluations are desirable, the use of close-range photogrammetry should be considered. The UMK 10/1318 camera produced satisfactory results during the study and has been purchased by the Virginia Department of Highways and Transportation for close-range terrestrial applications. It is recommended that highway and bridge engineers be made aware of the capabilities of close-range photogrammetry.

Disclaimer Statement:The contents of this report reflect the views of the author(s), who is responsible for the facts and the accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the Virginia Department of Transportation, the Commonwealth Transportation Board, or the Federal Highway Administration. This report does not constitute a standard, specification, or regulation. Any inclusion of manufacturer names, trade names, or trademarks is for identification purposes only and is not to be considered an endorsement.

Authors

Other Authors

Marvin H .Hilton

Last updated: January 16, 2024

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