Aashto culvert and storm drain system inspection guide

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For more information about AASHTO publications, visit the AASHTO Store online at inspectors with guidelines for routine condition assessment of culverts. This guide provides Inspectors with guidelines for routine condition assessment of culverts or storm drains, and includes a reliable and reproducible method Culvert & Storm Drain System Inspection Guide, American Association of State Highway. Transportation Officials (AASHTO) 1st Edition, 2020. AASHTO CSDIM-1. Culvert & Storm Drain System Inspection Guide. standard by American Association of State and Highway Transportation Officials, 2020. the National Association of Sewer Service Companies (NASSCO). The new AASHTO Culvert and Storm Drain System Inspection Guide provides guidance for pipe