Geocell Stream Crossings: Eco-Friendly and Erosion-Resistant

A geocell stream crossing is an innovative and sustainable solution for stabilizing and reinforcing stream crossings, providing both environmental benefits and structural integrity. Geocells are three-dimensional, honeycomb-like structures that can be filled with soil, gravel, or concrete, making them ideal for creating durable, erosion-resistant surfaces over streams. In this article, we will explore the basics of stream crossings, how to make one with geocells, and why geocells are a preferred choice for these projects.

What is a stream crossing?

A stream crossing refers to the point at which a road, trail, pipeline, utility line, or other infrastructure crosses over or under a stream, creek, river, or any other watercourse. Stream crossings are a critical part of transportation, infrastructure, and environmental management, and they are often designed to ensure that the structure doesn’t obstruct water flow, harm the surrounding environment, or create erosion issues.

There are different types of stream crossings depending on the infrastructure and the stream’s characteristics. Some common types include:

• Bridges: Elevated structures that span across a watercourse, allowing water to flow freely underneath. Bridges are typically used when the stream is large or when a more permanent solution is needed.
• Culverts: A tube-like structure placed beneath the road, trail, or infrastructure, which allows water to flow through it. Culverts are often used for smaller streams or in locations where building a bridge would be unnecessary or too costly.
• Fords: A shallow crossing where vehicles or pedestrians can drive or walk through the water, typically in areas where the stream is not very deep or where the crossing is temporary.
• Pipes: Used for smaller stream crossings, where a pipe is placed under the watercourse to carry the flow of water.

When designing or constructing stream crossings, there are several considerations, such as:

• Hydraulic capacity: The ability to handle water flow without causing flooding or erosion.
• Environmental impact: Minimizing disruption to local ecosystems, water quality, fish migration, and wildlife habitats.
• Structural integrity: Ensuring the crossing is durable and stable enough to handle the expected loads, streamflow, and potential extreme weather events.

Stream crossings are crucial for maintaining infrastructure and ensuring safe and sustainable development, but they must be designed and managed carefully to protect the surrounding environment.

How do you make a stream crossing?

To make a stream crossing using geocell, the first step is to clear and prepare the area by sloping the banks of the stream on each side and providing a firm streambed. A geocell grid is then laid out across the prepared streambed and anchored securely. The geocell is filled with soil, gravel, or other materials to create a stable surface that distributes the weight evenly. This helps prevent soil erosion and protects the streambed from damage, allowing vehicles or livestock to cross safely. Additionally, culverts or small bridges can be incorporated for water flow under the crossing.

Can you fill geocell with concrete?

Yes, geocells can be filled with concrete for added strength and durability. On slope applications, GeoFanTex GeoCell can be filled with angular rock, concrete, or with vegetated soil. Filling geocell with concrete creates a solid, stable surface that is particularly useful in high-traffic areas or where additional reinforcement is needed. The honeycomb structure of the geocell holds the concrete in place, preventing cracking or displacement, while still allowing for some flexibility in response to ground movement.

Why use geocell?

Geocell is used for stream crossings due to its ability to provide superior soil stabilization and erosion control. The three-dimensional structure of geocells distributes weight evenly, reducing the risk of rutting and soil compaction. Geocells also allow for the use of local, natural materials like soil or gravel, minimizing environmental impact. In addition, geocells are lightweight, easy to install, and offer long-term durability, making them a cost-effective and environmentally friendly solution.

A geocell stream crossing offers a durable, eco-friendly solution for traversing waterways without causing environmental harm. Geocells provide excellent stabilization, can be filled with concrete or other materials, and protect streambeds from erosion. Whether used for vehicles or livestock, geocells help create long-lasting, sustainable crossings that ensure access without damaging delicate ecosystems.