Location

  • Brazoria County, Texas

Client

  • Brazoria County Toll Road Authority

Status

CobbFendley provided the PS&E development of SH 288 Managed Lanes Segment 3, from north of FM 518 to the Harris/Brazoria County Line. Segment 3 included widening the existing SH 288 facility to add four toll lanes (two in each direction) with reconstruction of general purpose lanes, four reconfigured entrance/exit ramps, new bridges at FM 2234/McHard Road grade separation, bridge widenings across Hickory Slough (FEMA studied stream), detention ponds, overhead and cantilever sign bridges, and northbound and southbound toll gantries north of FM 2234/McHard Road.

CobbFendley proactively coordinated with the GEC, segment design teams, corridor-wide engineers (responsible for survey, geotechnical, environmental, TCP, utilities, tolling, etc.), and local stakeholders including TxDOT, City of Pearland, Brazoria Drainage District No. 4 (BDD4), Pearland EDC, etc. Our design met TxDOT and AASHTO criteria, and we successfully coordinated with and received approvals from stakeholders and outside agencies, including TxDOT Houston and Brazoria County Drainage District No. 4.

Segment 3 was uniquely challenging from a management and coordination perspective as it included a begin project tie-in with Segment 2, end project tie-in with the TxDOT design-build project (SH 288, Harris County), and mid-project tie-ins with adjacent segments for the t-ramp and braided ramps. We successfully navigated coordination with all adjacent design teams to develop seamless roadway geometry, drainage boundaries/designs, guide sign placements, and accommodate mid-project tie-ins (ramps, vertical clearances, bridge elements, retaining walls, etc.).