Three-sided structures are increasingly being tailored to fit into the context of a wide range of sites.
Over the past 20 years, precast three-sided structures have become a common choice for the replacement of many deficient small bridges and culvert structures as well as new construction. These modular structures allow for rapid design and construction while maintaining the flexibility to fit a wide range of sites. Three-sided structures are frequently used for highway, airport, railroad, park, wetland, environmental applications, and more. Increasingly, multi-disciplinary teams including engineers, architects, planners, and concerned neighbors are tailoring these efficient small bridge systems into structures that provide more than utilitarian functions.