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

The Texas Department of Transportation (TxDOT)maintains a spatial dataset of roadway polylines for planning and assetinventory purposes, as well as for visualization and general mapping. Thisdataset covers the state of Texas and includes on-system routes (those thatTxDOT maintains), such as interstate highways, U.S. highways, state highways,and farm and ranch roads, as well as off-system routes, such as county roadsand local streets.This data contains measures. Measures are storedas M-values within each vertex along the line, in the same way that somedatasets store z-values for the elevation, except that measures store thedistance from the origin, or DFO, along the line. M-enabled networks serve asframeworks for locating roadway assets along the network using linearreferencing. This data set must be downloaded as a file geodatabase in order tokeep M-Values intact. If downloaded as a shapefile or added to a map from aconnection to ArcGIS online, measures will not be applied to the line.Update Frequency: 1 MonthsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/04/24]

The TxDOT Roadway Inventory 2018 layer is a statewide dataset that has attribute information routed to TxDOT Roadway linework. By using linear referencing tools, attribute information from the TxDOT Roadway Inventory table are located on the linework. Roadway attributes such as functional system, traffic counts, surface types among many others can be found on a roadway simply by selecting it or performing a query. The TxDOT Roadway Inventory layer can also be found on www.TxDOT.gov and TxDOT’s Open Portal. This product is created annually by the Transportation Planning and Programming Division at TxDOT in the Data Analysis, Mapping and Reporting Branch for internal and public use.Update Frequency: 1 YearsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/04/24]

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. It is comprised of all 25 TxDOT Districts. This layer was recently updated to include the district types: Rural, Metro and Urban.Update Frequency: As NeededSource: Transportation Planning and Programming Division (TPP) | Data ManagementSecurity Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/03/17]

The Bridge dataset was developed using data provided by the Bridge Inspection Database. The Bridge Inspection Database contains a record for each Bridge Structure on public roadways in Texas. This includes Bridges maintained by TxDOT, Toll Authorities, Counties, Municipalities, and other jurisdictions. Bridge Inspection data is the primary source used to update the National Bridge Inspection File (NBI) in Washington. For more information on Bridge attribute data, please consult the Bridge Inspection Coding Guide and the Bridge Data Dictionary found at the links below:TxDOT Bridge Coding GuideTxDOT Bridge Data DictionaryUpdate Frequency: NightlySecurity Level: Public

The TxDOT DCIS Projects service layer is a dataset of roadway construction and maintenance projects that are either currently under construction, or are in some phase of the planning process. Projects are grouped into 4 categories: projects that are currently underway or begins soon; projects in the construct authority (begins within the next four years); projects in the develop authority (planned to begin in 5 to 10 years); and projects in the initial phases of project development (corridor studies, construction in 10+ years). The dataset excludes non-letting projects. Update Frequency: 7 DaysSource: TxDOT Connect (TxC)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/05/21]

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-systems 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 unsegmented version are not broken by functional classification the way the other version of TxDOT Roadways feature layer is. 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 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: 1 MonthsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/05/21]

The TxDOT Vertical Clearance dataset displays a range of vertical clearances for bridge structures on the statewide roadway network. Vertical clearance is defined as the vertical distance between the roadway surface and the bottom surface of a bridge, overhead sign, or other overhead obstruction. Data derived is a general representation of the Bridge Underclearance Database maintained by the Bridge Division of TxDOT.Date valid as of: January 2025Publish Date: January 2025Update Frequency: As neededSecurity Level: Public

Maintenance Section Offices are the second administrative subdivision under TxDOT Districts and Area Engineer Offices. The Geospatial Roadway Inventory Database application (GRID) is the system of record for storing roadway maintenance designation. The maintenance office designation is coded onto every on-system (state owned) road as a linear feature. Update Frequency: 1 MonthsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/05/21]

User guide for the ArcGIS Online Statewide Traffic Count AppThe guide covers essential aspects, including:Map Functions Overview: This section details the basic interactive functions of the map, including zooming, panning, and identifying features. It will explain how to navigate the map interface effectively, find specific locations, and understand the map's overall layout and controls. Turn Layers On and Off: This portion of the guide will teach users how to control the visibility of different data layers within the map. Users will learn how to toggle layers on and off to customize the map display, focusing on specific traffic count data or related information. This allows for a more focused analysis of the data. Attribute Table and Export Data: This section explains how to access and utilize the attribute table associated with the traffic count data. Users will learn how to view detailed information about each traffic count location, including specific count values, dates, and other relevant attributes. Furthermore, this section will instruct how to export the attribute table data into formats like CSV or Excel for further analysis outside of the online application. Downloading Data: This portion of the guide will explain how to download the traffic count data. It will explain what file types are available for download, and any restrictions that are placed on the data.

This feature service contains reference and location information for TxDOT's statewide traffic count stations. This layer does not contain traffic count data.Revision 3/4/2024: Feature Layer is updated to show only master station records. Directional stations are no longer visible.Updated: DailySecurity 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]

The original dataset was created by Aviation Division and modify by the Transportation Planning and Programming Division of TxDOT in the Data Analysis, Mapping and Reporting Branch for planning and asset inventory purposes, as well as for visualization, county map book, and general mapping. This dataset contains information about airport name, ownership, county, district, and the Federal Aviation Administration (FAA) facility numbers.Update Frequency: As NeededSource: Federal Aviation Administration (FAA)Security Level: PublicOwned by TxDOT: FalseRelated LinksData Dictionary PDF [Generated 2025/03/14]

The National Highway System (NHS) consists of roadways important to the nation's economy, defense, and mobility (Interstates, Other Principal Arterials, Strategic Highway Network, Major Strategic Highway Network Connectors, and Intermodal Connectors).This statewide NHS dataset is maintained by the Transportation Planning and Programming Division per Federal Highway Administration requirements, and to serve as a base layer for TxDOT's cartographic products.Update Frequency: 1 YearsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/04/24]

2023 End of Year roadway data that includes TxDOT highway information for Single Roadbed, Left Frontage and Right Frontage roadbeds. This dataset is produced annually.Update Frequency: 1 YearsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/04/24]

Concurrencies are stretches of roadway which are designated as two or more routes.Update Frequency: 1 MonthsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/05/21]

The Transportation Planning and Programming (TPP) Division of the Texas Department of Transportation (TxDOT) created and maintains this dataset as a repository for all highway designation changes approved by the Texas Transportation Commission (the Commission), as documented in the "Minute Orders." This dataset includes additions and updates to, and removals from, the state highway system as approved by the Commission.Date valid as of: May 2015Publish Date: May 2015Update Frequency: Monthly

Linear feature service of TxDOT Roadways stamped by TxDOT city boundaries for use in the Simplified Roadway Diagram application.Update Frequency: 1 MonthsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueUpdate Frequency: 1 MonthsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/05/21]

A climbing lane is an "extra" lane used for short distances in certain areas to improve safety, ease congestion and prevent delays. These lanes help facilitate the passing of trucks and slow moving vehicles whose speed drops because of the sustained steep grades. This data is updated by GRID users. Climbing passing lanes are located geographically along roadways using linear referencing. Update Frequency: AnnuallySource: Geospatial Roadway Inventory Database (GRID)Update Frequency: 1 YearsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/04/23]

The Transportation Planning and ProgrammingDivision (TPP) of the Texas Department of Transportation (TxDOT) created thispolygon layer for planning, analysis, and mapping purposes. Area EngineerOffices are the first administrative subdivision under TxDOT Districts. Eachdistrict is divided into several area offices, which are generally made up ofseveral counties. Each area office, in turn, is divided into severalMaintenance Sections.Update Frequency: As NeededSource: Transportation Planning and Programming Division (TPP) | Data ManagementSecurity Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/03/17]