Westpark Tollway, Segment 2

CobbFendley completed the PS&E for Segment 2 of the Westpark Tollway Extension Project. The overall project was 4.1 miles from Texas Heritage Parkway to FM 723, and was divided into three segments. Prior projects completed along the Westpark Tollway corridor constructed frontage roads all the way to FM 359 in the City of Fulshear, without the toll lanes. This project extended the toll lanes from their end (at FM 723) to the west, between the already constructed existing frontage roads from the prior projects, to provide four toll lanes (two in each direction). This project was completed using AASHTO and TxDOT criteria, design standards, and specifications.

CobbFendley’s Segment 2 was approximately 1.2 miles in length and included entrance/exit ramps, Flewellen Creek Drainage Crossing (FEMA Zone A), grade separation at FM 1463, and the only toll gantry within project limits. The scope that our team completed included roadway design, retaining walls, bridge design, storm sewer, hydraulic modeling, toll gantry and tolling facilities, and SWP3. Additionally, CobbFendley completed Illumination design services for the entire corridor, Segments 1-3. We collaborated and partnered with the Segment 1 and 3 design teams to facilitate a seamless design for the corridor. All three segments were merged into a single PS&E for one construction bid package.

For the Flewellen Creek Drainage Crossing, our team coordinated with the Fort Bend County Drainage District and the local floodplain administrator to obtain hydraulic models and prior analysis/reports. Significant scour and meandering of the existing channel was observed in the field, so CobbFendley proposed to restore the channel to pre-frontage road project conditions with slope and velocity protections installed to prevent future erosion. Hydraulic modeling was coordinated closely and iterated to verify no impacts along the channel.