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Preliminary design

The preliminary design guidelines of the Iowa Department of Transportation's Office of Bridges and Structures design manual are in the process of being rewritten and sections on this page may be out-of-date. Updated sections, as they become available, will be placed in section three of the Office of Bridges and Structure's LRFD Design Manual Web page.

CADD bridge standard plan files and design manual and commentary disclaimer


Title page/Table of contents

Culvert guidelines

Appendix A - Culverts

Example RCB Culvert Situation Plan and Checklist

Example Pipe Culvert Plat Plan and Checklist