Uploaded November 2021 | Updated September 2026, 2 weeks ago
Read the full case study: prestogeo.com/case_studies/vegetated-geoweb-system-stabilizes-road-shoulder
The Challenge: Stabilizing a Vegetated Road Shoulder
The $45 million, 3.2-mile Mack Hatcher Parkway extension project in Franklin, Tennessee, included the construction of a vegetated road shoulder along a portion of the new roadway. The Tennessee Department of Transportation (TDOT) required a low-maintenance, economical, and safe solution for this vegetated road shoulder.
Initially, a rolled paver product was specified; however, this solution was cost-prohibitive, so engineers worked with Jen-Hill Construction Materials to provide a more affordable solution that met their requirements for a stabilized, vegetated road shoulder.
The Solution: GEOWEB® 3D Soil Stabilization System
Project engineers chose the GEOWEB® 3D Soil Stabilization System to stabilize the road shoulder along the parkway. Compared to a rolled product, the GEOWEB system provided a thinner cross-section, was easier to install and lowered the overall project cost.
The contractor, Reed Landscaping, placed 188,000 square feet of GEOWEB GW30V4 (4-inch cell depth) sections over a woven geotextile. The GEOWEB sections were connected using the patented ATRA® Key at each end-to-end connection. Once installed, the GEOWEB geocells were infilled with an engineered fill consisting of 70% crushed aggregate and 30% topsoil mix. Crushed aggregate provides the required load support capability while the topsoil allows for root penetration, leading to stronger, healthier vegetation. Sod was rolled over the top of the filled GEOWEB sections to complete the installation.
Read the full case study: prestogeo.com/case_studies/vegetated-geoweb-system-stabilizes-road-shoulder
The Challenge: Stabilizing a Vegetated Road Shoulder
The $45 million, 3.2-mile Mack Hatcher Parkway extension project in Franklin, Tennessee, included the construction of a vegetated road shoulder along a portion of the new roadway. The Tennessee Department of Transportation (TDOT) required a low-maintenance, economical, and safe solution for this vegetated road shoulder.
Initially, a rolled paver product was specified; however, this solution was cost-prohibitive, so engineers worked with Jen-Hill Construction Materials to provide a more affordable solution that met their requirements for a stabilized, vegetated road shoulder.
The Solution: GEOWEB® 3D Soil Stabilization System
Project engineers chose the GEOWEB® 3D Soil Stabilization System to stabilize the road shoulder along the parkway. Compared to a rolled product, the GEOWEB system provided a thinner cross-section, was easier to install and lowered the overall project cost.
The contractor, Reed Landscaping, placed 188,000 square feet of GEOWEB GW30V4 (4-inch cell depth) sections over a woven geotextile. The GEOWEB sections were connected using the patented ATRA® Key at each end-to-end connection. Once installed, the GEOWEB geocells were infilled with an engineered fill consisting of 70% crushed aggregate and 30% topsoil mix. Crushed aggregate provides the required load support capability while the topsoil allows for root penetration, leading to stronger, healthier vegetation. Sod was rolled over the top of the filled GEOWEB sections to complete the installation.
