Schoharie Reservoir Low Level Outlet Microtunnel

As part of a major infrastructure project at the Schoharie Reservoir in Gilboa, New York, Stiver Engineering provided a variety of services for a low-level outlet designed to release water downstream into Schoharie Creek to facilitate dam maintenance and emergency response, mitigate flood risk, and enhance downstream habitat for fish and wildlife. The work includes…

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Highway 105 River Bridge Cofferdams

As part of work on three new Highway 105 bridges that cross rivers between Brenham and Navasota, Texas, Stiver Engineering provided a sheet pile and tie rod shoring system design for the installation of the bridges’ bent foundation and abutment. The shoring plan included temporary wale sets, as well as a staging plan for accessing…

Fort Bend County Pump Station Shoring

As part of a levee improvement project in Sugar Land, Texas, Stiver Engineering provided analysis and design for a three-sided shoring system with steel frames and timber lagging. The shoring was roughly 28.5 feet deep and set back in the levee with one side of the shoring system daylighting into the channel.

TxDOT BS 71-F Bridge over Colorado River

The new TxDOT bridge will replace the existing truss bridge over the Colorado River in Columbus, Texas.  Stiver Engineering provided construction engineering to the bridge contractor with cofferdam designs for crane access on both banks of the Colorado River.  The cofferdams allowed the crane to get closer to the center of the proposed bridge so…