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4.11. — Walls

View Walls Technical Plan

4.11.1. — Roles and Responsibilities Comparison

Key Steps

  • Retaining walls, noise walls, and bridge walls are managed, inventoried, and inspected by the Staff Bridge Branch.
  • Inspection data are reported and managed through SAMI – the System for Asset Management and Inspection.
  • Routine inspections for retaining and noise walls are performed at a maximum interval of 6 years. Routine inspections for bridge walls are performed at a maximum interval of 4 years. 
  • Regional distributions are based on regional poor wall count. Region funding pool distributions are updated every year.

Handoffs and Coordination

  • Investment strategies are tested using dTIMS analysis to determine the most cost-effective treatments for a range of budget scenarios. 

  • Staff Bridge provides the regions a prioritization list annually which identifies walls (or projects including walls) and treatments for that year.
  • Regions work with Staff Bridge on prioritizing project needs, and ultimately decide which wall projects will be implemented.

Key Asset Policies

  •  PD 14 establishes asset management metrics and performance targets for walls.
  • PD 703 states risk-based project-related transactions concerning CDOT and TC for walls and other assets. 
  • 23 CFR Part 515, Part 667 covers asset management plans and periodic evaluations of facilities repeatedly requiring repair and reconstruction due to emergency events.
  • FAST Act – Enabling legislation that governs current federal surface transportation spending. The FAST Act builds on much of the performance-based asset management measures outlined in MAP-21.

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