DOT - Steep Slope Armoring

The Department of Transportation (DOT) used Flexamat tied concrete block mats for roadside slope erosion control on I-25, specifically for fast, effective stabilization with minimal traffic disruption, complementing larger wildlife underpass projects in the area to protect both drivers and local fauna like black bears.

This solution involved unrolling the geogrid-reinforced mats on seeded slopes behind guardrails to prevent erosion, allowing for quick installation and maintaining traffic flow on the treacherous mountain pass.

Key Details about the Project:
Purpose: To combat erosion on steep slopes along I-25, a challenging segment.
Product Used: Flexamat Plus UV-T, a system of concrete blocks embedded in high-strength geogrid.

Benefits:
Speedy Installation: Allowed for quick setup and removal of traffic controls, minimizing lane closures.
Durable: Provides a stable, long-term solution for erosion control.
Vegetation-Friendly: The spacing between blocks allows for grass to grow, creating a natural look.
Context: Part of broader DOT efforts in the area, including significant wildlife underpasses to reduce collisions with animals like black bears.

How it Works:
Preparation: Slopes are graded and seeded with appropriate seed mix.
Placement: Mats are unrolled from rolls, often using simple equipment like excavators and skid steers.
Erosion Control: Stabilize the soil permanently, working with nature, and safe for wildlife.

This project showcases how the DOT uses modern solutions like Flexamat for efficient infrastructure maintenance, alongside major wildlife crossings for ecological safety.