GAL-CR40-235

Euthenics provided engineering, roadway and bridge design, hydraulic and scour analysis, geotechnical and utility coordination, and final plan services for ODOT PID 119870, replacement of the functionally obsolete, one-lane CR 40 (Patriot Road) bridge over Sand Fork in Perry Township, Gallia County, Ohio. The existing steel pony-truss bridge had less than 15 feet between railings and deficient roadway geometry. The proposed replacement is a 90-foot single-span galvanized steel beam bridge with five W33x241 beams, an 8.5-inch composite reinforced-concrete deck, no skew, and a 24-foot face-to-face bridge width carrying two 10-foot lanes and two-foot shoulders. Cast-in-place reinforced-concrete semi-integral abutments supported on piles founded on rock support the bridge. The existing concrete abutments are cut down and left in place as permanent scour protection, supplemented by rock channel protection. Hydraulic analysis documented the existing opening as inadequate and the proposed wider opening as improving the 10-year design headwater and 100-year upstream water-surface elevations, meeting the applicable ODOT hydraulic criteria. Euthenics addressed the upstream residence, the adjacent driveway and right-of-way impacts created by raising the profile to achieve a 35-mph design speed, and potential conflicts with AT&T fiber-optic, overhead electric, and water-service facilities. The final design coordinated deep foundations, scour countermeasures, and roadway and guardrail approach improvements.