4.9. — Culverts

View Culverts Technical Plan

4.9.1. — Roles and Responsibilities Comparison

Key Steps

• Staff Bridge Branch maintains culvert inventories, performs inspections, and calculates a risk-based Prioritization Value.
• Identifies culvert conditions that pose a threat to the function of the structure or the safety of the traveling public, and focuses the investment of these culverts with Essential Repair Findings (ERFs).
• When the ERF backlog is reduced, other high-priority culvert projects can be addressed.
• Culvert conditions drive region funding distributions and project selection.
• Project selection seeks to cost-effectively improve culvert performance in meeting targets to preserve transportation infrastructure condition, and ensure safety and mobility.

Handoffs and Coordination

• Consultant inspection teams are used to perform On-System minor structure inspections.
• The Statewide Non-Bridge Inspection Coordinator provides oversight and project management for the On-System minor structure inspections.
• Regions are provided with the culvert prioritization list annually and identify culverts (or projects including culverts) and treatments for that year.

 4.9.2. — Key Policies

• PD 14 sets CDOT performance targets for culverts.
• 23 CFR Part 490 Subpart D – Final rule establishing national performance management measures for assessing culvert conditions.
• 23 CFR Part 650 Subpart C – Final rule establishing policies for the national standards for the proper safety inspection and evaluation of culverts.
• 23 CFR Part 650 Subpart D – Regulation prescribing policies and outlining procedures for administering the Highway Bridge Replacement and Rehabilitation Program.