RFA Quick Reference guideS

These quick reference guides are designed to help inspectors quickly identify and respond to Requests for Action (RFA) related to ancillary structures. By condensing key guidance from the MiASIM into streamlined, easy-to-use formats, they reduce the need to navigate extensive documentation while supporting timely and consistent field decisions.

Concrete culvert opening surrounded by large rocks with a shallow stream, overlaid with the title “Culvert RFA Quick Reference Guide” from the Ancillary Structures Program; updated June 5, 2026,

CULVERTS

This guide provides a streamlined overview of RFA criteria for culverts, including general guidance, RFA levels by material type, and element condition categories. It also features real-world photo examples to help inspectors quickly recognize conditions and determine appropriate actions in the field.

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