SRT Description

Sam Rayburn Tollway Fourth Lane Project

srt_logo02Sam Rayburn Tollway Fourth Lane Project Description

Improvements to Sam Rayburn Tollway (SRT) began in early January 2019. This work includes constructing an additional lane in each direction, in the center median, along the entire 26-miles of the SRT, from west of Denton Tap Road to U.S. 75. A new ramp will be built to replace the existing eastbound Parkwood Boulevard and Preston Road exit ramps and separate exiting and incoming traffic merging onto SRT from the DNT direct-connectors. Drivers coming from the DNT will continue to have access to enter the new eastbound Preston Road exit ramp or enter eastbound SRT. Auxiliary lanes will also be added in various locations along the corridor to improve ramp merging areas.

As part of the North Texas Tollway Authority’s (NTTA) public involvement and environmental analysis processes, two community meetings were held in February 2017. In July 2017, a Public Hearing was held to present the project and results of the environmental analysis, and to receive formal comments from those in attendance. Comments were accepted until Aug. 9, 2017.

The presentation shown during the Public Hearing is available here. View the draft schematic maps here.

All comments were reviewed and responded to by NTTA. That information, a Public Hearing Summary and other project details are included in the Sam Rayburn Tollway Fourth Lane Widening Categorical Exclusion Documentation.

The fourth lane is expected to open to traffic in late 2021.

SRT_4thLn_Project Map_112818

Frequently Asked Questions
Click here for “Frequently Asked Questions” about the Sam Rayburn Tollway Fourth Lane Project

Progress in Pictures

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Photo Slideshow View photos of Sam Rayburn Tollway Fourth Lane Project construction.

Project E-Newsletters
The ProgressNTTA Update is an e-newsletter that provides the latest news about project updates and construction on the SRT Fourth Lane Project. By subscribing to the Update, you also will receive the Corridor Progress Report for the SRT Fourth Lane Project. Subscribe now or read past issues.

Project Status: Corridor Progress Report

Every quarter, NTTA issues quarterly Corridor Progress Reports (CPR) for projects under construction or future projects. See our Corridor Progress Report for the latest SRT Fourth Lane Project information.

We can also email this report to you. If you would like to be added to our CPR distribution list, please send us a note at

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