What We Are Building

  • TxDOT will build an upgraded, state-of-the-art roadway consisting of 2-to-3 non-stop US 290 mainlanes for through traffic in each direction, as well as 2-to-3 frontage road lanes in each direction.
  • An overpass for the US 290 mainlanes over William Cannon Drive will be built, along with new flyovers between US 290 and SH 71. At this location, the US 290 mainlanes will be lowered under SH 71.
  • New intersections will be constructed along US 290 at Convict Hill Road, RM 1826, Scenic Brook Drive and Circle Drive (South View Road) where the highway will go below the existing ground level and the cross street will remain at ground level.
  • U-turns will be constructed at intersections along US 290 and SH 71 to allow vehicles traveling on frontage roads to access the opposite direction frontage road.
  • Along SH 71, the flyover ramps will extend past Scenic Brook Drive where the mainlanes will transition to a 5-lane (three lanes northbound, two lanes southbound) highway with U-turns for local access.
  • Significant bicycle and pedestrian accommodations will be built along the entire corridor, including 14 miles of shared-use path and 1 1/2 miles of sidewalks.
  • An offsite stormwater detention pond will be built upstream of Williamson Creek near Old Bee Caves Road and Sunset Ridge to reduce potential flooding, and multiple water quality treatment ponds will be built within the corridor.
  • New landscaping, tree plantings and corridor aesthetics will be part of the construction plan.

US 290 and its intersection with SH 71 have long been identified as an area in need of mobility solutions. It is listed in the 100 Most Congested Roadways in Texas (Texas A&M Transportation Institute, 2020). In fact, improvements for this intersection have been included in regional transportation plans for over 30 years.

The “Y” in Oak Hill reached capacity in 1995 and the population kept expanding. As a result, congestion has gotten steadily worse. By 2040, traffic demand is expected to more than double at the US 290/SH 71 intersection. By increasing the capacity of the roadway system, TxDOT will accommodate the need for additional capacity today, while meeting the demands of tomorrow.  

The current roadway is an unreliable route for transit and emergency vehicles as well. Overall, the infrastructure is aging and in need of an upgrade. 

The Oak Hill Parkway project is the right-sized project to meet the local, regional and statewide need for safety and mobility on US 290 at SH 71. 

There is a possibility that TxDOT or CRC will suggest a change in the roadway design due to any number of factors including, but not limited to, minimizing utility conflicts and schematic refinements. Should this occur, we will engage and inform impacted property owners and stakeholders about those changes.

Yes. Over the decades of planning and through the most recent environmental study process, community input had a meaningful impact on project design. 

Key changes made to the design due to community input include:

  • Reducing the elevation of the US 290/SH 71 interchange
  • Reducing the project’s footprint where possible
  • Separating the through traffic from local traffic
  • Adding bicycle/pedestrian accommodations
  • Enhancing best practices for water quality and flooding concerns
  • Limiting impacts to trees and preserving several iconic oak trees

The design reflects both the safety and mobility needs as well as community values. Learn more by reviewing our history of public involvement here

No. Traffic demand on this corridor is just too high. US 290 and its intersection with SH 71 have long been identified as an area in need of mobility solutions. It is listed in the Top 100 Most Congested Roadways in Texas (Texas A&M Transportation Institute, 2020). In fact, improvements for this intersection have been included in regional transportation plans for more than 30 years.

TxDOT is tasked with providing a real transportation solution that provides meaningful traffic relief. The Oak Hill Parkway project meets the traffic demand along the corridor today and best manages the traffic projections of tomorrow. TxDOT will keep the footprint of the project as small as possible in order to responsibly meet the purpose and need of the project.

No. Oak Hill Parkway is fully funded as a non-tolled Texas Clear Lanes project. 

What to Expect During Construction

The community should plan for construction impacts to last about five years.

Project timeline:

  • Mid-2021: Groundbreaking ceremony
  • Late 2021: Begin major activity on US 290 beginning at the far west and far east segments of the project 
  • Mid-2022: Begin major activity on SH 71 
  • Late 2022: Begin major activity at the US 290/SH 71 “Y” interchange segment 
  • 2025-2026: Open to traffic

Activity will occur throughout the entire corridor simultaneously. The construction sequence that TxDOT will use for the Oak Hill Parkway project will be an “outside-in” approach. This prioritizes construction of the new frontage roads (on the outside) prior to the reconstruction of the mainlanes. 

Exact timing of traffic shifts and lane closures will be developed as the design of the project progresses. When information becomes available, TxDOT will distribute this information to businesses, residents and drivers through multiple communication channels (e.g., e-blasts, tweets, website updates and media alerts).

Construction schedules are fluid and intended to adapt to time, circumstances and weather delays. The goal of the construction plan will be to keep as many lanes open as possible while the project is being built.

Unfortunately, yes. Construction projects can be disruptive, and we will do our best to be a good neighbor.

Neighbors and businesses should expect: 

  • Travel delays
  • Lane shifts, closures and detours
  • Temporary cross street closures
  • An increase in noise, vibration, dust and lighting, especially during night work
  • An increase in traffic on the frontage roads and neighborhood streets
  • Adjustments to business access
  • Shifts in the schedule of activities
  • Minor changes to the project design 
  • Temporary water/power disruptions

TxDOT and CRC will make every effort to be good neighbors and keep you informed of disruptive work.

To finish the project on schedule, construction may occur 24 hours a day, seven days a week to include nights, weekends and holidays. However, lane closures will not generally take place during the day to minimize travel delays.

Environmental stewardship is important to TxDOT and CRC. Crews will preserve and protect many trees in the corridor including several iconic oak trees, and they will follow water quality Best Management Practices (BMPs) approved by the Texas Commission on Environmental Quality (TCEQ) during any work near Williamson Creek and along the project corridor. To prevent run-off from directly entering the Edwards Aquifer, crews will identify karst features and caves prior to construction and work to protect them during the project. In addition, multiple water quality treatment ponds have been incorporated into the design of the project.

TxDOT and CRC will be coordinating with appropriate wildlife agencies since there is potential for state and federal threatened and endangered species within or near the project area. Prior to construction, environmental teams will conduct biological surveys to detect any potential threatened and endangered species and their habitats, which will help project personnel minimize or avoid any impacts. Surveys will also be conducted for migratory birds, and crews will monitor the project area during nesting season.

Currently, there are limited routes for bicyclists and pedestrians in the corridor. The Oak Hill Parkway Project includes significant improvements to bicycle and pedestrian mobility, including construction of 14 miles of shared-use path, 1 1/2 miles of sidewalks, as well as Americans with Disabilities Act enhancements at cross streets along the corridor.

TxDOT and CRC will be incorporating aesthetic design features into roadway bridges, walls and overhead sign structures throughout the corridor. New landscaping and tree plantings will also be part of the final design.

An offsite stormwater detention pond will be built upstream of Williamson Creek near Old Bee Caves Road and Sunset Ridge to reduce flooding in the area. The team will build a dam across a natural creek valley to capture flood waters during intense rain events. This will allow water to slowly recede in the hours/days after rainfall. Maximum available storage for stormwater at this location is approximately 100 acre-feet or 32 million gallons. The surface area of the pond is approximately 13 acres.

Additional drainage ponds will also be built along the project corridor to help control potential flooding during construction.

Work zone safety is a priority. TxDOT and CRC will commit to best safety practices with regard to the traveling public, bicyclists and pedestrians, and our crews. We also monitor public health guidelines regarding COVID-19. 

TxDOT and CRC encourage drivers to follow these safety tips while traveling through work zones: 

  • Pay Attention: You should always keep your eyes on the road, but this is especially important in work zones. Be aware of all signage throughout work zones that can indicate reduced speeds, lane changes and other important information. 
  • Avoid Distractions: Please avoid distractions such as your cellphone, eating, drinking, the radio, GPS and conversing with other passengers.  
  • Slow Down: Lane closures, traffic pattern shifts and reduced speeds are common in work zones. Make sure to slow down when entering a work zone and keep an eye out for road workers.
  • Keep Your Distance: Rear-end crashes are common in work zones – maintain extra space between your vehicle and the one in front of you at all times.

Design-Build is a delivery method for large infrastructure projects. The design-build contractor is responsible for the roadway’s final design and construction. The design-build method can improve efficiencies, reduce costs and expedite project completion since you don’t have to wait for the design to be completed to begin construction.

The Oak Hill Parkway project is a good fit for the design-build method due to its size, complexity and cost. It’s long been identified as a candidate for the design-build method.

A design-build contractor consists of one large team of engineers, construction professionals and other experts. It takes several months for prospective design-build contractors to go through TxDOT’s rigorous procurement process for selection which includes a technical and cost proposal. The design-build contractor for the Oak Hill Parkway Project is Colorado River Constructors (CRC).

As the design-build contractor for the Oak Hill Parkway Project, CRC is dedicated to hiring local workers as well as using state-certified Disadvantaged Business Enterprise (DBE) firms for subcontracting opportunities. An online webform for Employment and Business Opportunities is available here to help direct you to their leadership for employment and business opportunities.

How to Stay Informed

The public outreach team is working hard to proactively keep the community informed about the project. We will be coordinating closely with residents, businesses, the media and our elected officials throughout construction.

We welcome you to sign up for the e-newsletter here, follow us on Twitter at @oakhillparkway and to visit OakHillParkway.com frequently. You can contact us directly here or call our hotline at 512-342-3281. Once it is safe to do so, we will be setting up in-person meetings and events to pass along information and listen to the community.  

Traffic updates will be provided on the project website as well as on the project Twitter page, @OakHillParkway. You can sign up for weekly lane closure alerts here

TxDOT and CRC will be installing a “Temporary Travel Time System” along the Oak Hill Parkway corridor. Devices will be placed at different locations throughout the project area to provide commuters with as much real-time traffic and travel information as possible so they know what to expect and can adjust their route if they like.

We would be happy to provide a presentation at your request. Contact us by calling 512-342-3281 to set something up. 

If you have any questions, contact us online or call our hotline at 512-342-3281.