CDOT Region 1 Guardrail Data Validation & Inspection

March 2025 Final Report - Delivered by Navjoy Consulting Services, Inc.

Executive Summary

In 2024 - 2025, Navjoy Consulting Services, Inc. executed the first comprehensive guardrail validation and assessment for Colorado Department of Transportation (CDOT) Region 1. Building on a successful 10-week pilot across five regions, the team fully validated 5,905 guardrails (including all 1,073 ramp guardrails and 282 newly inventoried assets) on the region's highway network.

Key Outcomes

  • 10.26% MASH Compliant — Only 606 guardrails were fully MASH compliant.
  • 637 NIA Flagged — 10.8% flagged as "Needs Immediate Attention" — posing direct safety risks.
  • Crash Analysis — Detailed crash analysis linked non-MASH installations (especially height and terminals) to serious and fatal incidents.
  • Actionable Inventory — Provided CDOT with a complete, photo-documented, GIS-ready inventory in the proprietary NueGOV platform, plus prioritized repair recommendations with material-cost estimates exceeding $15.6 million for the 3W guardrail NIA subset alone (materials only).

This landmark project transformed an outdated 2017–2019 Fugro dataset into actionable intelligence, directly supporting CDOT's Zero Fatalities goal, the statewide guardrail modernization effort, and the development of new M-standards and training.

Project Background

CDOT's previous guardrail inventory (collected by Fugro in 2017 and 2019 via Automatic Road Analyzer vehicles) lacked condition details and MASH compliance data. Navjoy identified this gap and proposed a validation program.

Phase 1 – Pilot Program (2024)

  • 92%+ non-MASH compliance in most regions
  • Height and blockout size failures were the dominant issues
  • 70–95% of guardrails showed visible damage

Phase 2 – Region 1 Full Validation (Jan 2024 – Mar 2025)

  • Imported and deduplicated the 2019 Fugro dataset into NueGOV
  • Added new attributes: post embedment material, flare angle, curb-mounted status, erosion severity, etc.
  • Physically inspected every guardrail by walking its full length

The Challenge

  • Non-MASH Compliance — Over 90% of guardrails statewide were suspected to be non-MASH (confirmed in pilot).
  • Silent Hazards — Thousands of "silent hazards" — damaged, eroded, or incorrectly installed guardrails invisible from drive-by inspections.
  • Missing Ramp Data — Ramp guardrails (over 1,000 in Region 1) were entirely missing from prior inventories.
  • Reactive Maintenance — Reactive maintenance could not keep pace with crash-induced damage and aging infrastructure.
  • No Prioritization Framework — No data-driven prioritization for repairs or Smart Cushion upgrades.

Navjoy's Solution

1. Rigorous Safety Protocols

  • Full PPE, vehicle lighting, "Move Over" signage, and standard cone/sign deployment at every stop.
  • Daily weather/route planning to maximize safety and productivity.

2. Proprietary NueGOV Digital Platform

  • Interactive map with MASH/non-MASH layers and filterable summary grid.
  • Five structured data tabs per guardrail (Begin Terminal, Guardrail, End Terminal, MASH Compliance, Documents).
  • Real-time photo documentation and same-day QA/QC review.

3. Standardized Field Methodology

  • Measure height at beginning, midpoint, end, and blockout.
  • Document all 15 damage types across begin terminal, rail face, and end terminal.
  • Flag NIA guardrails with one of five root causes (Heavy Impact, Hardware Failure, Terminal Type, Erosion, Missing/Damaged Component).
  • Create new assets on the spot for previously undocumented guardrails and all ramps.

Results & Key Findings: MASH Compliance

MASH Compliance Distribution

MASH Compliant — 606

Non-MASH — 5,299

  • MASH Compliant · 10.26% — 606 guardrails met full MASH standards
  • Non-MASH · 89.74% — 5,299 guardrails failed compliance
  • ~65% Height Failures — affected approximately 65% of all guardrails
  • 1,492 Single-Element Failures — many fixable with targeted, low-cost upgrades

Results & Key Findings: NIA, Damage & Crash Correlation

NIA (Needs Immediate Attention)

NIA Guardrails — 637

NIA Overview

  • Total NIA: 637
  • Highest concentrations on I-70 (070A) and I-25 (025A)
  • 15.79% of validated ramp guardrails were NIA (higher than mainline)
  • Top NIA cause: Heavy Impact (followed by Hardware Failure and Terminal Type)

Damage Analysis

  • 8,198 total damage instances documented across 5,288 physically validated guardrails.
  • Only 282 guardrails (≈5%) showed zero damage.
  • Blockout and bearing-plate/tension-cable failures were the most frequent paired issues.

Crash Correlation (2022–2024 serious/fatal guardrail crashes)

  • 35 of 52 crashes involved non-MASH terminals
  • Only 9 of 39 inspected crash-site guardrails met MASH height
  • 2 Rollover Fatalities occurred on 11-inch guardrails

Repair Prioritization & Cost Estimates (Materials Only)

Cost Breakdown (Materials Only)

3W Rail Replacement — $13.63M

End Terminals — $2.01M

  • 3W rail replacement — 340,661 ft / 64.5 miles — $13.63 million
  • End terminals (SoftStop, MFLEAT, MAX-Tension, SCI) — $2.01 million
  • Subtotal for 3W NIA — $15.635 million

Additional High-Priority Items

  • 17 QuadGuard → SCI Replacements — $510,000
  • 12 Cable Barriers — $1.37 million
  • Concrete & Bridge-Rail Repairs — Case-by-case (some urgent)

Strategic Impact & Next Steps Delivered

  • Complete Inventory — First-ever complete inventory of mainline + ramp guardrails.
  • Prioritized NIA Repair List — Prioritized NIA repair list tied directly to crash history.
  • Business Case for MASH Upgrades — Clear business case for upgrading to MASH-compliant Smart Cushion terminals.
  • Statewide Standards Foundation — Foundation for new statewide guardrail M-Standard, specifications, and training curriculum.

Recommended Next Steps

  • Immediate NIA Repairs — Immediate repair of all 637 NIA guardrails with simultaneous MASH upgrades.
  • Annual Inspection Program — Annual guardrail inspection program (expand to contractors).
  • Statewide Expansion — Complete validation in remaining CDOT regions (Region 2 completed June 2025 using identical methodology).

Conclusion & Project Summary

Navjoy's Region 1 Guardrail Validation & Assessment project set the gold standard for data-driven highway safety infrastructure management in Colorado.

By uncovering that nearly 90% of guardrails were non-MASH and over 10% required immediate attention, the project moved CDOT from reactive maintenance to proactive, prioritized investment — directly saving lives and reducing severe injuries on the state's busiest corridors.

This work directly enabled the statewide rollout and proved the power of combining expert field execution, digital innovation (NueGOV), and rigorous analysis to protect Colorado motorists.

Project Summary

  • Client — Colorado Department of Transportation – Region 1
  • Scope — 5,905 guardrails (mainline + all 1,073 ramps + 282 new assets)
  • Timeline — Pilot 2024 → Full collection Jan 2024 – Mar 2025
  • Deliverables — Final Report, complete NueGOV dataset, photos, GIS layers, NIA prioritization, repair cost model
  • Prepared for — Alex Yismma, EIT II, CDOT
  • Prepared by — Navjoy Consulting Services, Inc.

Navjoy is proud to have delivered this foundational safety project and continues to support CDOT's statewide guardrail modernization program across every region.