Layout Creek Bridge

The Layout Creek Bridge Project is an aquatic restoration project that seeks to return the current undersized culvert crossing to a more natural state by replacing the culvert with a bridge that has already been designed with prior investment from the Forest Service and Bonneville Power Administration. The substructure was designed using a Geosynthetic Reinforced Soil-Integrated Bridge System (GRS-IBS) design, while the superstructure was designed with prefabricated prestressed concrete beams, both of which are promoted under FHWA's EDC initiative.

Additional funding from other sources is being used for fabrication and a portion of the construction, while the AID Demonstration funding will be used for the GRS-IBS construction portion of the project. It is the intent of the Forest Service to use this project to accelerate the use of GRS-IBS structures technology on other national forests, particularly in combination with a prefabricated superstructure as in this case, by demonstrating the many benefits including time savings, cost savings, flexible design, increased constructability, safety advantages, and reduced environmental impact.