Sam Houston Tollway East Section 6

PGAL served as the prime engineering consultant for this 1.5-mile segment of the six-lane Sam Houston Tollway, a key mobility enhancement in eastern Harris County.

Client

Harris County Toll Road Authority

Construction Delivery

Design-Bid-Build

PGAL Scope

Bridge Design, Drainage Design, Retaining Wall Design, Roadway Design, Storm Sewer Design, Traffic Control, Utility Coordination

Completion Date

2011

The scope included four entrance and exit ramps, a 1,600-linear-foot bridge spanning a bayou, and significant flood mitigation improvements.

The project scope included four entrance and exit ramps, a 1,600-linear-foot bridge spanning a bayou, and a 1,200-linear-foot overpass bridge engineered to withstand 100-year flood events. To address elevation changes and site constraints, PGAL designed 7,500 linear feet of variable-height retaining walls. The team also incorporated extensive storm drainage systems, hydrologic studies, and detention ponds to manage runoff and mitigate flood risk.

In close coordination with HCTRA, TxDOT, the general engineering consultant, and specialty consultants, PGAL performed comprehensive cost and schedule analyses. This collaborative approach ensured seamless integration across disciplines and timely project delivery.