Text Size:   A+ A- A   •   Text Only
Site Image

Culvert Management
Miner Creek Outfall

Although historically overlooked, culverts are an integral part of the highway system and like other infrastructure they are subject to deterioration. ODOT is responsible for maintaining these drainage systems to assure safety of the public and protect highway assets. 
ODOT has embarked on a comprehensive program to inventory and accurately assess the condition of culverts located along the State’s highways. The focus is on culverts that range from 12 inches up to 20 feet in span. The goal of this effort is to set a consistent statewide standard for inventorying and rating culverts, as well as uploading this information into ODOT’s Drainage Facilities Management System database.

Drainage ID Markers​ ​
The purpose of the Drainage ID Markers is to set a consistent statewide standard for marking culverts less than 20 feet in culvert span.  The installation of drainage markers is optional and must be marked using standards from the following options:
  • Type 1:   The Type 1 marker is a green thermoplastic tape installed along the inlet edge of the pavement for quick identification of the culvert.
  • The Type 2 marker is a white background non-reflective aluminum paddle with black lettering that is mounted to a steel post or attached to a permanent feature.  The paddle is marked with the facility’s drainage ID (DFI), mile point, and a green strip near the top.

For further information, refer to the links below: 
  • Standard Drawing RD398 - Culvert ID Marker PDF  DGN


  • Field Inspection & Inventory Handbook – This guide is designed to be a quick reference for trained qualified employees in the field.  The contents of this book are developed to ensure repeatable results and statewide consistency.
  • Training:  DFMS training for ODOT employees is now available through iLearn.
  • FAQ’s


Robert E. Trevis, P.E. 
Culvert Engineering Program Leader


Resources Links

Program Resources
Other Resources
Drainage Facilities Management System Asset Management Page 
 ODOT Hydraulic Page