The American Society of Civil Engineers (ASCE) recently released their quadrennial Infrastructure Report Card. America’s infrastructure earned an overall grade of C, which is a minor improvement over 2021’s grade of C-minus and the highest grade received since the report card’s inception in 1998. While the report card is trending in the right direction, we are not quite ready to hang it on the fridge. There is still a lot of work and investment required to make up for decades of underinvestment and deferred maintenance, especially as climate change, population growth, and aging systems continue to place added stress on our infrastructure. Without sustained funding, strategic planning, and public-private collaboration, many critical systems — from levees and roads to drinking water and stormwater management — will remain vulnerable and inefficient. The report card assesses and assigns grades to 18 categories of American infrastructure, including Bridges, Energy, Ports, Rail, Roads, and Stormwater. Half of the categories received a grade in the “D” range. This means that the civil engineers who evaluated these categories determined that the infrastructure is “poor, at risk.” According to the report card, this is, “…a clear sign that more needs to be done to improve the health… Read more »
Posts Categorized: General
Building a Resilient U.S. Supply Chain for Critical Materials & Mining Infrastructure
Written by: JP George, Business Manager The U.S. Dept of Energy (DOE) classifies critical materials and minerals based on their importance to energy and supply risk. With the new U.S. administration taking office in January 2025, there has been a renewed effort to focus on strengthening the supply of these resources both domestically and abroad. Strengthening Domestic Supply Bipartisan efforts continue to bolster domestic mineral production through legislative actions, such as the proposed Critical Mineral Consistency Act of 2025 and revisions to the Energy Act of 2020. The National Mining Association (NMA) supports these measures, emphasizing the need for U.S. production over reliance on foreign sources. According to the U.S. Geological Survey’s (USGS) 2025 Mineral Commodity Summaries, the U.S. remains import-reliant for many critical minerals, with China controlling production for over two-thirds of these resources. NMA President & CEO Rich Nolan states, “We could be producing most of these minerals here at home—under world-leading environmental, labor and safety standards”. Projects like Perpetua Resources’ Idaho gold project could supply up to 35% of the U.S. annual demand for antimony, demonstrating the potential for revitalized domestic mining. Innovations in Mining & Mineral Processing Technological advancements are driving sustainable mining operations: South32 Hermosa… Read more »
How Geocells Provide Sustainable Solutions for Soil Stabilization and Erosion Control
Innovative Site Solutions for Civil Engineering and Construction Projects When faced with challenging site conditions—whether it’s weak soils, steep slopes, or erosion-prone channels—finding an efficient, long-term solution that minimizes maintenance is essential. Geocells offer just that. These innovative cellular confinement systems (CCS) are a proven solution for load support, retaining walls, slope stabilization, and channel protection applications. Geocells not only improve soil stability but also contribute to eco-friendly, sustainable project designs. Geocells are three-dimensional, honeycomb-like structures typically made from high-density polyethylene (HDPE). By confining and reinforcing infill materials like soil/vegetation, sand, gravel or concrete, geocells create a stable, load-bearing surface. This cellular system prevents soil movement and erosion, making geocells a versatile solution for stabilizing weak soils and supporting structures such as roads, retaining walls, slopes, and channels. How Geocells Work The core function of geocells is to create a grid of interconnected cells that confine and stabilize infill materials. This CCS strengthens the underlying soil and distributes loads more evenly, preventing the movement of infill under pressure. In load support applications—such as roads, parking areas, or driveways—geocells act like a semi-rigid slab. The geocell structure increases the load distribution angle and spreads vertical stresses over a larger area, which… Read more »
Understanding Hoop Stress and Wall Tension in Geocells
Written By: Samantha Justice, P.E., Bryan Wedin, P.E. Geocells provide one of the most powerful solutions available to engineers and contractors when designing and constructing roadways over soft and weak subgrades. With a successful track record of over 40 years, geocells have proven effective in load support applications over challenging conditions. If you’ve ever wondered how geocells work in load support applications – and the relationship between lateral confinement, hoop stress and wall tension – you’ve come to the right place. Geocells are used to alter vertical stresses beneath an applied cyclical load. When a vertical, cyclical load is applied over geocells, active earth pressures develop in the loaded cell. These pressures arise due to the friction between the infill material and the cell wall. This friction pushes back against the passive earth pressure in the adjacent cells, helping to support the load. Refer to Figure 1. The balance of active and passive earth pressures activates the hoop stress in the cell walls, which increases the stiffness and bearing capacity of infill material. The infill material is confined within the individual cells with no chance of displacement, or lateral or vertical spreading and the result is increased stiffness. In effect,… Read more »
Using GEOWEB® Geocells in Landfill Capping Applications
Written by: Cory Schneider, Business Development Manager When contaminated material such as landfill waste or contaminated soil is encountered, there are typically two options available—removal of the material or placing a “cap” over it. In most cases, capping is the easier and more cost-effective of the two options. Caps serve to isolate the contaminated material, preventing people and wildlife from coming into contact with it. Factors Influencing Landfill Cap Design Landfill cap design for any particular site depends on many factors, including the type and quantity of contaminants, size of site, amount of rainfall, and future use of the area. It can consist of one or several of the following: asphalt or concrete, vegetative layer, drainage layer, and/or an impervious layer (geomembrane or compacted clay). Preventing Slope Erosion with Advanced Geosynthetic Technology When using vegetative covers, especially in sloped areas, one of the best ways to prevent long-term erosion of the cap is to confine the topsoil component using geosynthetics like the GEOWEB Soil Stabilization System (geocells). The GEOWEB Geocells, which are three-dimensional ultrasonically welded strips of high-density polyethylene (HDPE), create small pockets to hold soil in place. By doing so, the system prevents erosion or sloughing when the soil… Read more »
Federal Railroad Administration (FRA) Announces $1.1 Billion Available in the Railroad Crossing Elimination (RCE) Grant Program
The inaugural Railroad Crossing Elimination (RCE) grant program was designed to eliminate or improve roadway and railroad at-grade crossings, with the goal of making roads/rails safer while improving commute times for citizens. According to the U.S. Department of Transportation website, “this program provides funding for highway-rail or pathway-rail grade crossing improvement projects that focus on improving the safety and mobility of people and goods.” The grant program helps fund projects that involve: repairing grade separations, relocating tracks, upgrading or improving protective devices, signals, or signs, maintaining at-grade crossings, and more. With safety as the top priority for the DOT, repairing and maintaining high-impact areas is critical so the potential for collisions or blockages can be prevented. Applications for funding are due no later than 11:59 p.m. EST, September 23, 2024. Visit USDOT website for more information and to apply for funding >> The GEOWEB® System stabilizes high-impact and crossing areas safely and quickly, limiting track downtime. Areas subjected to heavy stresses at bridge approaches, diamonds, turn-outs, and crossings create the highest maintenance and safety liabilities for operations. The GEOWEB Soil Stabilization System (Geocells) is effective in reducing maintenance in these high impact areas. The GEOWEB 3D Soil Confinement System has been… Read more »
Energy Infrastructure and Climate Change: Protecting Erodible Slopes in Fire-Prone Areas
Energy infrastructure is critical to the functioning of modern societies, and its protection against natural disasters and environmental threats is a top priority. Climate change exacerbates these disaster risks, with extreme weather conditions and wildfires being of particular concern, considering potential damage to the energy infrastructure and disruption of energy supply. Wildfires cause rapid, severe destruction, and, aside from damage to infrastructure, can impact our climate, vegetation, and atmosphere. To measure the size and impact wildfires have, scientists use observations from several low Earth-orbit satellites, including the Copernicus Sentinel-3. These tracking satellites gather shortwave-infrared data combined with other techniques to differentiate between burned areas and other low reflectance covers such as clouds. The European Space Agency (ESA) compiles that long-term dataset to analyze global fire trends. According to the ESA, fire affects an estimated four million square kilometers (1.5 million square miles) of Earth´s land each year [1]. That is 400,000,000 hectares (990,000,000 acres) yearly—about half the size of the United States of America, an area larger than the country of India. The United Nations Environment Programme (UNEP) Rapid Response Assessment on Wildfires compiles findings from over 50 experts from research institutions, government agencies, and international organizations around the globe, and… Read more »
Transforming Transportation Infrastructure: Protecting Road and Bridge Embankments with Geocells
In a rapidly changing world, maintaining and improving our transportation infrastructure’s resilience and sustainability has become a critical concern for civil engineers. Climate change and increasing frequency of natural disasters present an ongoing challenge to the durability of our infrastructure. In the context of road and bridge embankments, protecting these structures can be of paramount significance to the safety and welfare of the public. These structures are often subjected to fluctuating environmental conditions, heavy traffic loads, and must be able to withstand major storm events to protect embankment materials from soil washouts and the long term damaging effects of erosion. So how can civil engineers meet these growing demands without compromising sustainability or longevity? Increasingly, engineers are turning to geosynthetic solutions, such as the GEOWEB® Soil Stabilization System—a low-maintenance and eco-friendly solution for long-term protection of road and bridge embankments. In many cases, the GEOWEB Geocells offer a flexible, durable, and environmentally responsible alternative to traditional construction materials that can accommodate a wide range of infill materials, including soil, aggregate, or concrete, to establish hard or soft armor, as necessary, for protection as well as aesthetics. As we explore the capabilities of the GEOWEB Geocells, we will find that this… Read more »
Dam Structure Safety Installation and Repair Using Advanced Geosynthetic Technology
Written By: Samantha Justice, P.E. Dams and Spillways Are a Critical Part of U.S. Infrastructure With over 91,000 structures nationwide, dams and spillways are essential for controlling flooding, water distribution, and providing hydroelectric power. However, these structures cannot last forever. The average age of dams and spillways in the U.S. is now 61 years, significantly over the typical 50-year lifespan of these structures. Aging infrastructure can lead to serious consequences if safety precautions are not taken or measures are not implemented to address identified problems promptly. Continual inspection and upkeep are crucial for any dam manager. The 2021 Infrastructure Report Card by the American Society of Civil Engineers rated the condition of U.S. dams with a “D” grade, highlighting the pressing need for repairs and maintenance (Home). State and federal regulations provide a framework for assessing and maintaining dam and spillway structures, requiring at least yearly audit inspections to identify areas needing repair or replacement. Performing these repairs can help extend the lifetime of dams, maintaining essential services without excessive costs or increased failure potential. Understanding Areas of Concern for Existing Structures The vast majority of America’s rivers and lakes have existing dams and spillways, and as such, very few… Read more »
Green Retaining Walls Protect an Advanced Wastewater Treatment Plant from a 500-Year Flood Event
Flood Protection Plan To meet federal requirements for flood mapping of levee-protected areas, a levee reconstruction project for the Indianapolis Southport Advanced Wastewater Treatment (AWT) plant along Little Buck Creek was part of a more extensive Deep Rock Tunnel Connector project—one of the largest combined sewer overflow projects for the City of Indianapolis. The project included plans to protect the Southport ATW plant and wastewater-processing pond from a 500-year flood event from an adjacent creek and river. To accomplish this, a wall system designed on the creek side of the levee would have to maintain a narrow profile to increase the water capacity of the creek. A Natural Erosion Protection Solution Flood events and high water flow from the adjacent creek caused significant toe erosion of the levee embankment along the north side of the wastewater treatment plant. The AWT required a long-term soil stabilization solution to combat erosive forces from Little Buck Creek’s varying depths and flows. The creek flows as low as a 1-foot depth with velocities of 3 feet per second (fps) to as high as 8 fps with a depth of 12 to 15 feet during a flooding event. The project engineer preferred a wall system… Read more »
800.548.3424
