Development of a Load and Resistance Factor Design (LRFD) Culvert and Storm Drain Rehabilitation Guide

Culvert and storm drain systems constitute critical nodes in U.S. transportation networks, providing pathways for water to move through highway embankments and providing structural support to roadways. Most states have an inventory of three to five times more culverts than bridges. In the last 20 years, the transportation industry has advanced funding to start to address the deferred maintenance on these structures by developing rehabilitation methods, creating rehabilitation products, and writing a new in-service inspection guide. Unfortunately, these methods are not assembled in a readily usable manner for highway agencies. The recent AASHTO Culvert and Storm Drain System Inspection Guide (CSDSIG) provides a roadmap for the inventory and inspection of culverts and storm drains. The next logical step is to determine a course of action for assets identified as deficient.  Guidance on when to replace versus rehabilitate and the choice of a rehabilitation method are current gaps in knowledge that are not captured in national guidance. In addition, guidance for design of the rehabilitation methods is not standardized. The development of an AASHTO Rehabilitation Design Guide will overcome this problem. The objective of this research is to develop a comprehensive guide for designers to use when deciding between the replacement or rehabilitation of culverts and storm drains. The guidance will assist designers in the selection of the most appropriate rehabilitation method(s) and the applicable loading conditions and design method to use when applying the chosen method.

• Record URL:
  • http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=5892
• Supplemental Notes:
  • Contract to a Performing Organization has not yet been awarded.

Language

• English

Project

• Status: Proposed
• Funding: $500,000.00
• Contract Numbers:

  Project 24-53

• Sponsor Organizations:

  National Cooperative Highway Research Program

  Transportation Research Board
  500 Fifth Street, NW
  Washington, DC  United States  20001

  American Association of State Highway and Transportation Officials (AASHTO)

  444 North Capitol Street, NW
  Washington, DC  United States  20001

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Project Managers:

  Abu-Hawash, Ahmad

• Start Date: 20250526
• Expected Completion Date: 0
• Actual Completion Date: 0

Subject/Index Terms

• TRT Terms: Asset management; Culverts; Inspection; Load and resistance factor design; Rehabilitation; Storm sewers
• Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; Planning and Forecasting;

Filing Info

• Accession Number: 01956426
• Record Type: Research project
• Source Agency: Transportation Research Board
• Contract Numbers: Project 24-53
• Files: TRB, RIP
• Created Date: May 27 2025 8:50PM