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Evaluation of ODOT Overhead Sign Support Inspection Program

Ghaedi, Hamed
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1408654983

Abstract Details

2014, Master of Science, University of Toledo, Civil Engineering.
It is the responsibility of The Ohio Department of Transportation (ODOT) to insure that the supports for overhead sign supports (OSS), signals and high mast lights in Ohio safely perform their design function. Many of these supports have exceeded their design life by 20 years or more. Recent overhead sign support failures in the state of Ohio and nationally have raised the attention to the current inspection procedures. Insuring these supports serve safely, reliably and economically requires systematic inspection program including inventory management and reliability assessment. When the failure of signals or light supports could endanger the traveling public or cause delays, the supports need to be inspected, inventoried and their reliability assessed. Currently, there is no unified state-wide inspection program for OSS, signal or high mast light supports. This thesis presents the results for the evaluation of the current inspection program for OSS in the north and west portions of Ohio. For sign supports, ODOT wished to evaluate the adequacy of the current qualitative ground based inspection with a 5 year maximum inspection interval. Both the adequacy of the inspection method and the reoccurrence period needed to be examined. This research is a part of an overall study of the ODOT inspection program which is conducted by Mistras Group, Inc. for ODOT. This study sought to investigate and assess the adequacy of the current ODOT inspection program for overhead sign supports. This thesis covers ODOT inspection program for a part of state of Ohio including Districts 1, 2, 3, 4, 7 and 12 in the north and west of the state. The rest of Districts are covered by research team members from Ohio University. As part of this evaluation, a sample of 88 overhead sign supports was inspected in these Districts. A visit to each District was carried out to understand their inventory process, acquire past inspection reports and to become familiar with the way each District implemented ODOT’s inspection program. In order to perform inspections in a systematic and organized manner, a detailed procedure of inspection was developed along with an updated inspection form. In this study, a comparison between ODOT current inspection program and Mistras inspection procedure is provided. In the conclusion, recommendations to improve adequacy and efficiency of ODOT inspection program are provided for ODOT’s consideration.
Douglas Nims (Advisor)
Liangbo Hu (Committee Member)
Brian Randolph (Committee Member)
102 p.
Civil Engineering
sign, support, overhead sign support, inspection, district, Ohio Department of Transportation, traffic signal, high mast light

Recommended Citations

Citations

  • Ghaedi, H. (2014). Evaluation of ODOT Overhead Sign Support Inspection Program [Master's thesis, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1408654983

    APA Style (7th edition)

  • Ghaedi, Hamed. Evaluation of ODOT Overhead Sign Support Inspection Program. 2014. University of Toledo, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1408654983.

    MLA Style (8th edition)

  • Ghaedi, Hamed. "Evaluation of ODOT Overhead Sign Support Inspection Program." Master's thesis, University of Toledo, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1408654983

    Chicago Manual of Style (17th edition)

toledo1408654983
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This open access ETD is published by University of Toledo and OhioLINK.