Golden Gate Highway District No. 3 Bridge Project
The Local Highway Technical Assistance Council (LHTAC), along with the Golden Gate Highway District No. 3 (GGHD), selected J-U-B ENGINEERS, Inc. to provide comprehensive services for this bridge replacement project. These services included bridge design, hydraulic modeling, scour countermeasures, utility coordination, agency permitting, right-of-way plans, and construction engineering/inspection.
The new bridge structure features a three-sided, cast-in-place concrete stiff-legged culvert supported on a shallow cast-in-place concrete foundation, with wingwalls slightly skewed relative to the waterway. The bridge width was expanded to accommodate two 11-foot travel lanes and two 12-foot paved shoulders, improving both capacity and safety. This project was completed as part of the Leading Idaho Local Bridge Program.
Payette County Bridge Project
LHTAC and Payette County also partnered with J-U-B ENGINEERS, Inc. for another bridge project under the Leading Idaho Local Bridge Program. J-U-B was responsible for bridge design, hydraulic modeling, scour countermeasures, utility coordination, agency permitting, right-of-way plans, and construction engineering/inspection.
Due to the site’s in-situ materials, 16-inch diameter steel shell piles were driven and filled with concrete to ensure foundation stability. The new structure is a three-sided, cast-in-place concrete stiff-legged culvert topped with a 3-inch asphalt wearing surface. The bridge was widened by approximately four feet to provide 10-foot travel lanes and 5-foot paved shoulders, maintaining a similar elevation as the original bridge. The approach roadway prisms were widened up to 10 feet and included the reconstruction and relocation of an existing diversion structure on the southeast side. All construction activities were completed outside the irrigation season.
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