The Sacramento Chapter of the American Public Works Association (APWA) selected the Trinity County Highway Bridge Program Five Bridges Project for a Project of the Year award. The Central Federal Lands Highway Division of the Federal Highway Administration, in cooperation with Trinity County, proposed the project to improve safety for the traveling public and maintain roadway connectivity by replacing five existing substandard bridges with new bridges. The existing bridges, which were located in northeastern Trinity County, were identified as being functionally obsolete and structurally deficient.
Above: Hayfork Creek Bridge Replacement Project
WRECO teamed up with Dokken Engineering, responsible for civil and structural design, and Geocon, responsible for geotechnical design, for this project. WRECO performed an independent/peer review of the Final Hydrologic and Hydraulic Report. This included the following:
• Criteria and basis of the overall study,
• Hydrologic and hydraulic analyses,
• HEC-RAS hydraulic model,
• Bridge scour analysis, and
• Recommendations for scour countermeasures.
Above: Mumbo Creek Bridge Replacement Project
WRECO obtained the hydraulic model and performed an independent run of the model. WRECO also checked the output results and compared that with the discussions in the report.
Above: WRECO staff with the APWA Project of the Year Award
The APWA Awards Program recognizes projects that demonstrate excellent management, administration, design, sustainability, construction, and community relations.