TxDOT – Brazos County Big 6 Improvement Project – College Station, TX

Best Transportation – Highway

Brazos County Highway 6, known locally as the “Big 6,” is a major improvement project along SH 6 focused on enhancing safety, relieving congestion, and improving mobility in the Bryan/College Station region.

TxDOT awarded a $671 million contract to Fluor Heavy Civil, LLC, representing a significant infrastructure investment as the area continues to grow.

Fast Facts

• Award Category: Best Transportation – Highway

• Project: TxDOT – Brazos County Big 6 Improvement Project

• Location: Hwy 6, College Station, TX 77842

• Owner: Texas Department of Transportation (TxDOT) (Austin, TX)

• General Contractor: Fluor Heavy Civil, LLC

• Precast Manufacturer: Summit Precast Concrete (Montgomery, TX)

Project Overview

The Big 6 project expands the corridor from four main lanes to six (three in each direction), reconfigures auxiliary lanes, and introduces collector-distributor lanes at key locations to support safer, more efficient merging. Interchanges are being upgraded to improve traffic flow, and new shared-use paths are being added to accommodate bicycles and pedestrians.

Construction began on December 1, 2025, following the project being let in March 2025.

 

Precast Scope

Summit Precast was awarded the traffic barrier scope, producing:

• 127,830 LF of 42″ single slope concrete barrier (SSCB)

• 126,360 LF of low-profile concrete traffic barrier (LP CTB)

That’s roughly 48 miles of concrete barrier, an essential component of safer traffic control and work-zone protection throughout the corridor improvements.

Barrier types noted in submission:

• 127,830 LF SSCB TY1 R-Connection

• 126,360 LF LPCTB TY1 & TY2 JJ-Hook Connection

Innovation highlight: JJ-Hook connection

For this project, Summit Precast incorporated a new JJ-Hook connection into the low-profile traffic barrier. The connection improves barrier safety and increases on-site installation efficiency by reducing setting time.

Schedule + logistics (minimizing disruption)

• Casting began: July 2025

• Anticipated casting completion: September 2026

• Shipping began: December 2025

• Delivery cadence: primarily evening/night deliveries at ~3,000 LF per night to reduce impact on traffic flow

Project Team:

• Owner: TxDOT (Austin, TX)
• General Contractor: Fluor Heavy Civil, LLC
• Precast Manufacturer: Summit Precast Concrete (Montgomery, TX)