This study represents one of the Seismic Evaluation of I-24 Bridges investigative series. The focus is on preliminary seismic evaluation and ranking of bridges according to their seismic vulnerability. Bridges along I-24 are considered in this investigation. The ranking will assist in identifying and prioritizing bridges for secondary evaluation, retrofit measure, or other course of action. The rating system described herein is based on a methodology provided by the FHWA Retrofitting Manual for highway bridges. One hundred and twenty seven (127) highway bridges were evaluated and rated in this process for projected 50-year and 250-year seismic events. The Tennessee River Bridge and the Cumberland River Bridge, also on I-24, are evaluated and presented in separate reports. Furthermore, culverts are excluded from the investigation. Based on this preliminary investigation, bridges along I-24 have ranking from 0 to 38, based on a scale of 0 (lowest) to 100 (highest), for the 50-year event, and 0 to 48 for the 250-year event. A priority list is presented in this report for bridges that require further seismic evaluation.

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The contents of this report reflect the views of the authors, who are responsible for the facts and accuracy of the data presented herein. The contents do not necessarily reflect the official views or policies of the University of Kentucky, the Kentucky Transportation Cabinet, nor the Federal Highway Administration. This report does not constitute a standard, specification, or regulation. The inclusion of manufacturer names or trade names is for identification purposes only and is not to be considered an endorsement.