Sam Houston Tollway Southeast Schematic Design


Harris County Toll Road Authority


Length: 11 miles

Number of Lanes: 6

Sam Houston Tollway Southeast Schematic Design


With an increase in traffic demand, the eleven-mile stretch of the Sam Houston Tollway needed to be widened from a four-lane facility to a six-lane facility between SH 288 and IH 45 in southeast Houston. Serving as a member of the Program Management Consultant team (Final Design GEC), Walter P Moore worked with twelve consultants in addition to delivering a variety of engineering services including pavement design, bridge design, re-configuring ramp geometries, retaining walls, and railroad coordination since the project included a large bridge over a railroad. We used VISSIM software analysis of freeway and ramp geometries and re-configurations in order to achieve the most efficient and cost effective design. Ramp operations and efficiencies were studied at length in order to determine if ramps were to be reversed, relocated or removed. Our work also included illumination schematics, relocation of toll facilities, and coordination with multiple adjacent projects.