Texas Department of Transportation · Southwest Austin
$677M · approximately seven milesCompletedUpdated September 29, 2026
Opening ceremony: Fluor.
Explore the completed roadway, delivery team and construction timeline in this free Project Insight. Final paving, striping and landscaping continue through late 2026.
Project overview
Oak Hill Parkway is a $677 million reconstruction of approximately seven miles of U.S. 290 and SH 71 in southwest Austin. The main roadway system is now open following a September 24, 2026 opening ceremony.
Colorado River Constructors, the Fluor and Balfour Beatty joint venture, delivered the design-build project for the Texas Department of Transportation, with AECOM as lead designer. Construction began in 2021.
The project is marked completed for the opening of its main roadway system. Final paving, striping and landscaping continue through the end of 2026.
Latest updates
Construction timeline, from announcement through delivery. Filed dates and future targets are labeled separately from confirmed events. Reviewed September 29, 2026.
2021
Construction milestone
Construction begins
Work starts on the U.S. 290 and SH 71 corridor reconstruction.
2025
Progress report
Major construction progress
Fluor’s progress report records more than four million work hours and major drainage, utility, pavement and bridge work.
September 24, 2026
Completed — main roadway
Opening ceremony
The project team and TxDOT mark the opening of the main roadway system.
September 25, 2026
Company announcement
Opening announced by Fluor
Fluor confirms the opening milestone and the remaining finishing works.
End of 2026 target
Target
Remaining finishing work
Final paving, pavement markings and landscaping are scheduled to continue through year-end.
Project team
Owner: Texas Department of Transportation (TxDOT)
Design Build Contractor: Colorado River Constructors
Joint venture partners: Fluor and Balfour Beatty
Lead designer: AECOM
Project scope
The design-build scope combines highway capacity, new structures and connections for local traffic, pedestrians and cyclists:
Approximately seven miles of improvements to U.S. 290 and SH 71
Main lanes widened from two to three in each direction
New flyovers and overpasses
New frontage roads
Shared-use pedestrian and bicycle infrastructure
Replacement of the former Y-interchange with a single-point urban interchange
The construction behind the new roadway
The scale of the work extends well below and beyond the travel lanes. In a 2025 progress report, Fluor recorded more than four million work hours, over 150,000 linear feet of underground drainage and utilities, and more than 750,000 square feet of bridge decks. Those figures describe an earlier construction snapshot rather than final quantities at opening.
The same report identified almost 200,000 square yards of concrete pavement. At peak activity, approximately 600 craft workers and subcontractor personnel supported delivery. Keeping a major regional route functioning while replacing its structures, drainage and junctions made sequencing central to the job.
Paths, drainage and material reuse
The scheme also includes 14 miles of shared-use paths and approximately 1.5 miles of sidewalks. These connections make the corridor improvements relevant to people walking and cycling as well as drivers. Stormwater detention and water-quality ponds form another part of the infrastructure package.
Fluor described an on-site recycling approach that reused existing roadway material in cement-treated base. Its progress report put reclaimed material at roughly 95% of that base mix, with about 125,000 tons of recycled base produced. Reusing material within the project reduced the need to treat all demolished pavement as waste.
Work remaining after opening
Opening the roadway does not mean every construction activity has ended. Final paving, pavement markings and landscaping are scheduled to continue through the end of 2026. Drivers should continue to watch for work zones as the contractor completes those remaining elements.
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