US 380 Denton County Feasibility Study

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US 380 Denton County Feasibility Study – From I-35 to the Collin County Line

Thank you for your participation in our virtual public meeting! The entire session should take no more than 20 minutes to complete. This virtual public meeting consists of presentation materials explaining the study purpose, alternatives being analyzed, and the process for evaluation. The virtual public meeting will be live from December 2, 2020 and will remain available online through the comment period deadline of December 17, 2020.

Virtual Public Meeting in Response to Public Health

TxDOT changed the in-person public meeting to a virtual format only, in response to the COVID-19 outbreak. The virtual public meeting and TxDOT website will provide the same information as an in-person meeting would have.

Additional COVID-19 information is available. Please review the latest Center for Disease Control and Prevention handout to learn more.

CDC COVID information

Meeting Purpose

  • Inform the public of project status and present recommendations.
  • Describe the project so the public can determine how they may be affected.
  • Provide the public the opportunity to contribute input.
  • Develop a record of public participation.
Online meeting mock-up

How to Navigate

  • Click the arrow on the right side of your screen.
  • Use the navigation bar at the left of your screen to revisit any part of the meeting.
  • Click through all 10 pages to view all materials.


To provide a written comment at any point, click the “Comment” button at the top right of your screen. You may close the form to continue through the slides. Once finished, please make sure to hit “Submit” to confirm that your comment is sent.

What is a Feasibility Study?

A feasibility study is conducted to analyze potential transportation options, including improving the existing alignment or utilizing new alignments.

  • Helps determine if the project should move on to more advanced phases of project development
    • Do Nothing (No Build) is a possible outcome
  • Identifies high-level or critical elements of engineering, impacts to stakeholders and the public, and economic feasibility of potential new roadways or improvements to existing roadways
  • Feasibility studies are not intended to result in detailed design, environmental analysis, or cost estimates
  • A preliminary cost estimate is created to determine feasibility of funding the project

Study Overview

Where is the study and what is involved?

Study Location

The US 380 Denton County Feasibility study area limits include US 380 from I-35 to the Collin County line. US 380 provides vital connectivity between Collin and Denton counties, similar to I-20 for Dallas and Tarrant counties.

Project area map

Click the image above to enlarge.

Map of combined studies

Currently, three major studies are working together to improve this connectivity. US 380 Denton County Feasibility Study and two recently completed studies: Loop 288 in Denton County and the US 380 Collin County Feasibility Study.

Study Goals and Objectives

The study is anticipated to recommend a solution that has both regional and local benefits.

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  • Provide regional connectivity by providing an East-West connection serving Collin and Denton Counties
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  • Provide reliable travel time and minimize congestion
  • Enhance driver expectations
  • Minimize human and environmental impacts
  • Provide roadway network reliability

Existing Conditions - Growth of Study Area

Study Area Growth

Population in the study area continues to increase at rates not seen in other parts of the Metroplex. Denton County has many cities within the study area that have doubled in size over the last 10 years and are anticipated to continue growing*. Current population projections including current committed and planned residential developments are over 440,000 people by 2045.

Historical Trends: Study Area Population

Graph of increasing population


City % increase in population (2010–2019)*
Celina 122%
Prosper 160%
Frisco 60.7%
Little Elm 105.1%
Providence Village 160.8%
Aubrey 87.1%
Cross Roads 3.5%
Denton 26.1%

Existing Conditions - Traffic

Purpose of Study

The demand on US 380 continues to increase at a rapid pace. The capacity of the existing four-lane arterial is insufficient for current demand. The in-progress project, beginning construction in 2021, is anticipated to add capacity and provide safety enhancements with overpasses and a raised median to address current mobility issues. As demand grows within the study area and region, this study will help to identify future feasible recommendations.

Planned TxDOT Improvements

TxDOT has several planned improvement projects in the study area, in various phases of completion. These include improvements that will enhance local and regional travel.

Imrpovement area map
Arterial improvements areas
New freeway areas
Grade separation areas

Potential Environmental Constraints and Land Use

Environmental Constraints

Impacts on humans and the environment are important factors that affect the feasibility of a potential alignment. The map below identifies potential environmental constraints that are being considered as a part of alignment evaluation.

Environmental map

Click the image above to enlarge.

Change in Land Use

The map below shows the change in land use from 2015 to 2019. Over 20,000 acres of farmland, ranch land, timberland, and vacant land have been converted to single family or commercial use.

Map of land use changes

Click the image above to enlarge.

Typical Sections

Existing Conditions

Existing conditions typicals

The existing conditions of US 380 serve as a baseline for evaluations for this study. Due to the lack of capacity, the existing configuration is insufficient to address traffic in peak hour periods* and is rated, in engineering terms, an “F” level of service.

  • Within existing right-of-way
  • Continuous access
  • 4-6 Lanes – Insufficient capacity for existing traffic


In-progress typicals

The in-progress project involves upgrading the existing facility to a six-lane roadway with raised medians and grade separations at key intersections. Construction is anticipated to start in 2021.

  • Enhanced safety/ separated movements at grade separations
  • 6 lanes
  • Improves level of service at key intersections
  • Does not accommodate 2045 travel demand volume forecast

Controlled Access Highway

Controlled access highway typicals

If a controlled access highway were to be constructed, traffic congestion would be expected to decrease and mobility throughout the corridor would increase due to the additional capacity. Controlled access highways with frontage roads use ramps to allow motorists to enter and exit the highway, and also separate high-speed and low-speed motorists, which further enhances safety.

  • 350’ – 400’ right-of-way footprint
  • Enhanced safety/limited access
  • 6-8 mainlanes and 4-6 lanes of frontage road
  • Accommodates 2045 travel demand volume forecast with acceptable level of service

Draft Conceptual Alignments

Initial Universe of Alignments and Public Feedback

Public Meeting #1 was conducted in January 2019 and several potential alignments were presented for the public to provide feedback on. The alignments included alternatives that ran to both the north and south of the existing US 380 alignment. The public was also able to provide feedback on their priorities for the corridor. Click below to view the initial alignments reviewed for this study as well as feedback from Public Meeting #1.

Universe of alternatives
Example comments recieved
Additional example comments recieved

Updated Conceptual Alignments

View the Conceptual Alignments or Routes being analyzed for this study below. To view the Conceptual Alignments on a larger map, please click here.

Combined alternative routes

Click the image above to enlarge.

Alignment Evaluation

Key Factors for Evaluating Conceptual Alternatives

Many factors are considered to determine the viability of an alignment. Evaluation criteria can be grouped into engineering, environmental, and economic factors. As part of the evaluation process, data is collected in each of these areas to fully understand the impact of each alignment.

Evaluation criteria Evaluation scale

Click the images above to enlarge.

Review each alignment below and its evaluation criteria

Click each alignment route shown here and then review the evaluation criteria tables below.

Blue alignment route
Yellow alignment route
Purple alignment route
Orange alignment route
Teal alignment route

Click the images above to enlarge.

Evaluation Criteria: Engineering/Mobility

Engineering/Mobility evaluation

Evaluation Criteria: Environmental

Environmental evaluation

Evaluation Criteria: Economics

Economic evaluation

Study Timeline and Next Steps

What’s Next?

The study team will continue to refine alignments based on feedback from this virtual public meeting to identify one or more preferred alignments. The next public meeting is anticipated to be held in late 2021 to review the preferred alignment(s) that would be developed into a draft schematic in a future phase of the project.

High-level timeline graphic

Click the image above to enlarge.

Comments and Study Contact Information

How you can provide comments and obtain additional information.

We Want to Hear From You!

Thank you for participating in the US 380 Denton County Feasibility Study virtual public meeting. We look forward to hearing from you. Please submit written or verbal comments by our deadline of December 17, 2020 using any of the methods outlined on this page.

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We would like your input on the draft conceptual alignments presented in this public meeting. You can complete the survey as well as provide verbal or written comments. Click here to complete the survey.

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Verbal Comments

A phone number has been established to receive your comments via voicemail. Please call (833) 933-0435 to record your message.

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Written Comments

To submit comments or questions online, click on the comment button in the top right corner of your screen. Type your comment and press submit.

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General Comment Form

To email or mail in your written comments, download a PDF of the general comment form and follow the mailing instructions provided.

Form Download: English or Spanish

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Contact Us

Texas Department of Transportation
Stephen Endres, PE, Project Manager
(214) 320-4469

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Right-of-Way Resources

Property owners have a legal right (Uniform Act) to fair compensation for their property. Several publications are available to help landowners understand the ROW acquisition process and are available through this Virtual Public Meeting. They include the State Purchase of Right of Way from TxDOT, and Relocation Assistance. The booklets are in PDF form and can be downloaded.

State Purchase of ROW: English or Spanish
Relocation Assistance: English or Spanish

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Project Website

Visit the project website at for additional project updates and materials.