The Texas Department of Transportation (TxDOT) maintains a spatial dataset of roadway polylines for planning and asset inventory purposes, as well as for visualization and general mapping. This dataset covers the state of Texas and includes on-system routes (those that TxDOT maintains), such as interstate highways, U.S. highways, state highways, and farm and ranch roads, as well as off-system routes, such as county roads and local streets. Route segments in this version of TxDOT Roadways are broken by functional classification. For an unsegmented version of TxDOT Roadways, see TxDOT Roadways Unsegmented.

This data contains measures. Measures are stored as M-values within each vertex along the line, in the same way that some datasets store z-values for the elevation, except that measures store the distance from the origin, or DFO, along the line. M-enabled networks serve as frameworks for locating roadway assets along the network using linear referencing. This data set must be downloaded as a file geodatabase in order to keep M-Values intact. If downloaded as a shapefile or added to a map from a connection to ArcGIS online, measures will not be applied to the line.

Update Frequency: Monthly

Source: Geospatial Roadway Inventory Database (GRID)

Security Level: Public

DISCLAIMER: This product is for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. It does not represent an on-the-ground survey and represents only the approximate relative location of property boundaries.Copyright 2014 Texas Department of Transportation.Content is updated two (2) times daily (Noon and Midnight).Supported and maintained by the TxDOT Right of Way Division, Right of Way Asset Management Section, 118 E. Riverside Drive (Bldg. 118), Austin, Texas 78704. For more information call the Right of Way Division's Main number: 512-416-2901 or email Dan Erwin, RPLS, PLS, R/W Land Surveyor and GIS Specialist at: Dan.Erwin@txdot.gov

The geo-spatial data was primarily created from the conversion land surveying records and data. The data was created for internal use during the acquisition of additional Right of Way parcels and to aide in the location of the Right of Way during construction and maintenance. It was also created for the Public to be more completely informed how a project may impact their property or the area they live in. The descriptive or status data information for each parcel or tract of land is from the TxDOT Right of Way Information System database (ROWIS) and is updated daily at Midnight). Additions to the geo-spatial data are made on an ongoing basis and become available after one of the two daily updates.

Memorial highways pay tribute to notable people or groups and can be designated by the state or by local government. State-designated memorial highways are designated by the Texas Legislature and typically get 2 signs that TxDOT is responsible for maintaining. Chapter 225 of the Transportation code shows the list of legislated memorial highways and is updated after each legislative session. Any local government can designate a memorial highway; however, in order to install signage on TxDOT right of way, the proposed designation must be approved by the TxDOT Commission or Executive Director.This layer reflects the designations through the 87th legislative session, which concluded in 2021. The layer will be updated again at the conclusion of the 88th legislative session in 2023. Historic Commission Minute Orders, Historic Blue Star highways, and Odd History memorial highways are kept track of by TRF but legacy memorial highways that may not have signage. These are represented by "Other" in the field DES_TYPE.Source: Geospatial Roadway Inventory Database (GRID)Updated: Biannually Security Level: PublicUpdate Frequency: 2 YearsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/04/24]

Max Speed limit values in miles per hour. This data is an extract from the Geospatial Roadway Inventory Databse (GRID), which is TxDOT's system for managing roadway assets in Texas.Note: Extracts from GRID are made on a regular basis and reflect the state of the data at that moment. Assets on routes that are in the process of being edited may be affected.Update Frequency: 1 MonthsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/04/24]

TxDOT's 25 Districts are geographic subdivisions of the state, each responsible for planning, construction, and maintenance of on-system roadways within its administrative boundary. Each district is a conglomeration of several Texas counties. Area Engineer and Maintenance Section Offices are subdivisions of a district. This version utilizes a generalized boundary along the coast, which is sometimes necessary for analysis in which it is important to encompass segments of roadways that travel over water. Roadways on bridges or causeways that span intracoastal waterways are not covered by detailed polygons that precisely follow the coastline, therefore this generalized boundary layer is needed for some types of analysis where it is important to preserve such relationships. Date valid as of: February 2015 Publish Date: February 2015 Update Frequency: StaticSecurity Level: Public

Network of Texas Railroads pulled from the Federal Railroad Administration (FRA) North American Rail Network (NARN) Rail Lines publicly available data. The data was clipped to the Texas State Boundary and queried to a records subset based on "current status or condition of rail line" as populated in the "NET" attribute. Additional fields were added and populated to adhere to TxDOT requirements and purposes.Update Frequency: 1 MonthsSource: Federal Railroad Administration (FRA)Security Level: PublicOwned by TxDOT: FalseRelated LinksFRA NARN Source DataTexas Railroads (Deprecated)Data Dictionary PDF [Generated 2025/04/29]

This dataset was created by the Transportation Planning and Programming (TPP) Division of the Texas Department of Transportation (TxDOT) for planning and asset inventory purposes, as well as for visualization and general mapping. County boundaries were digitized by TxDOT using USGS quad maps, and converted to line features using the Feature to Line tool. This dataset depicts a generalized coastline.Update Frequency: As NeededSource: Texas General Land OfficeSecurity Level: PublicOwned by TxDOT: FalseRelated LinksData Dictionary PDF [Generated 2025/03/14]