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 2025/02/24]

The TxDOT Roadway Inventory is a statewide dataset of attribute data routed to TxDOT's roadway network linework using linear referencing. Roadways are dynamically segmented whenever a single attribute changes, resulting in a highly segmented network that can be queried and filtered for specific attribute values. Attributes such as functional system, traffic counts, surface type, speed limits and many more are contained within. This layer is published annually based on end-of-year data that is reported to the Federal Highway Administration. This layer is highly segmented and thus in a different format than most of our regularly published datasets, which are segmented based on a single attribute. The TxDOT Roadway Inventory layer can also be found on txdot.gov and TxDOT’s Open Data 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.Security Level: PublicUpdated: AnnuallyLast Revision: 09/12/2024TxDOT Roadway Inventory Specifications 2023 AGO OverviewTxDOT Roadway Inventory Specifications 2023 PDF link in AGO

This resource contains statewide networks of roadways, railroads, bridges, and low water crossings, for Texas only.

Roadways detail: The Transportation Planning and Programming (TPP) Division of 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. M values are stored in the lines as DFOs (Distance From Origin), and provide the framework for managing roadway assets using linear referencing. 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. Date valid as of: 12/31/2014. Publish Date: 05/01/2015. Update Frequency: Quarterly.

Bridges detail: As with the roadways, both on-system and off-system bridges are maintained in separate datasets (54,844 total bridges, 36,007 on-system and 18,837 off-system). Bridges have numerous useful attributes, see coding guide [1] for documentation. One such attribute identifies structures that cross water: the second digit of Item 42 “Type of Service”. If the second digit is between 5 and 9 (inclusive) then the structure is over water. The bridges datasets are valid as of December 2016.

The roadways and bridges datasets contained here were obtained directly from TxDOT through personal correspondence. An alternate resource that is more open is the Texas Natural Resources Information System (TNRIS) [2]. The railroads and low-water crossings were obtained through TNRIS.

References [1] TxDOT Bridges Coding Guide (download below) [2] TNRIS data downloads [https://tnris.org/data-download/#!/statewide]

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: MonthlySource: Geospatial Roadway Inventory Database (GRID)Security Level: Public

TxDOT_Vector_Tile_Basemap Utilized for Statewide Planning Map and Project Tracker along with any other application that can use a basemap to find locations.This specifically give a light gray appearance, rather than brightly colored.

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: AnnuallySource: Geospatial Roadway Inventory Database (GRID)Security Level: Public

This feature class displays a polyline layer that contains roadway attributes of certain roadbeds that was routed using linear referencing tools to the TxDOT Roadway Linework (exludes supplemental roadbeds).

The Statewide Connectivity Corridors represent the Texas Transportation Commission approved corridors under the Unified Transportation Program’s Category 4 funding category. Category 4 provides funding for mobility and added capacity projects on major state highway system corridors, which provide statewide connectivity between urban areas and corridors. This network is composed of: Texas Trunk SystemNational Highway System (NHS) Connections from the Texas Trunk System or the NHS to major ports on international borders or Texas water portsNational Freight NetworkTexas Freight Network Hurricane Evacuation Routes

Link to Web Map: http://arcg.is/1m4KXX0Security Level: Public

A statewide point dataset of Texas Reference Marker locations maintained by the Transportation Planning and Programming Division of TxDOT. Reference Markers are extracted from the Geospatial Roadway Inventory Database (GRID), where they are maintained as an asset. Reference Markers are located along all on-system (i.e. state maintained) Texas roadways at 2-mile intervals, with the exception of interstate highways, which have markers at 1-mile intervals. Reference markers are used as a linear referencing system for project planning, asset management, and as a location reference in the field.Update Frequency: MonthlySource: Geospatial Roadway Inventory Database (GRID)Security Level: Public

City limit boundaries are maintained to enable the classification of roadway inventory attributes, satisfy federal and state roadway reporting requirements, and serve as a base layer for TxDOT's cartographic products. The data was created by the Transportation Planning and Programming Division of TxDOT in the Data Analysis, Mapping and Reporting Branch. City governments submit updates to their city limits as changes are made.Update Frequency: As NeededSource: City governmentsSecurity Level: PublicOwned by TxDOT: FalseRelated LinksData Dictionary PDF [Generated 2025/02/20]

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 2025/02/24]

The Transportation Planning and Programming (TPP) Division of the Texas Department of Transportation (TxDOT) created this GIS roadway network from a historic paper map for the purpose of visualization and general mapping, in celebration of TxDOT's centennial. http://www.txdot.gov/txdot100/ This dataset covers the state of Texas and includes the state highways adopted by the State Highway Department in June 1917. This system of highways is merely intended to be indicative of the general direction of the routes and is only approximate in location between designated points.Update Frequency: NeverSecurity Level: Public

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 2025/02/24]

Functional classification is a federally-mandated categorization of roadways based on the level of traffic service and degree of access they provide. Updates to functional classifications are evaluated collaboratively by TPP, TxDOT districts, Metropolitan Planning Organizations and Federal Highway Administration (FHWA) staff and can occur on an as-needed basis as roadways are constructed and/or expanded. Technical corrections may also be made on an as needed basis as the GIS representation of our roadways is altered to reflect current conditions on the ground. As such, this layer is updated monthly to reflect the latest data from our Geospatial Roadway Inventory Database (GRID).Update Frequency: MonthlySource: Geospatial Roadway Inventory Database (GRID)Security 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. It is updated weekly and used in TxDOT's Project Tracker application.Update Frequency: NightlySource: TxDOT ConnectSecurity Level: Public

City point locations are derived from boundary polygons of incorporated cities using the centroid of the polygon. Additional unincorporated points are also included. The data was created by the Transportation Planning and Programming Division of TxDOT in the Data Analysis, Mapping and Reporting Branch as a base layer for TxDOT's Cartographic products.Publish Date: June 2024Update Frequency: QuarterlySecurity Level: Public

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.Date valid as of: February 2015Publish Date: February 2015Update Frequency: StaticSecurity Level: Public

This dataset is maintained by Transportation Planning and Programming Division at TxDOT in the Data Management Section. TxDOT reports roadway attributes and linework annually to the Federal Highway Administration (FHWA) as part of the Highway Performance Monitoring System (HPMS) program.Update Frequency: AnnuallySource: Geospatial Roadway Inventory Database (GRID)Security Level: Public

Each year, the Transportation Planning and Programming (TPP) Division of the Texas Department of Transportation (TxDOT) contracts with Texas A&M Transportation Insititute (TTI) to identify and rank the most congested roadways in the state. Approximately 1800 route segments are provided to TTI and combined with speed and traffic data for the anlysis. The top 100 are ranked and included in this dataset.Update Frequency: Annually Source: Geospatial Roadway Inventory Database (GRID)Security Level: Public

There are three congressionally designated high-priority corridors as future interstates in Texas. They include:The Interstate 69 (I-69) System is part of the ISTEA (Intermodal Surface Transportation Efficiency Act) of 1991. When completed, I-69 will extend from the Texas/Mexico border to the Michigan/Canadian border, connecting Mexico, the United States, and Canada. The I-69 System in Texas will connect East and South Texas to state, national, and global markets through Texas seaports and border crossings. https://www.fhwa.dot.gov/Planning/national_highway_system/high_priority_corridors/hpcor.cfm#l18The Interstate 14 (I-14) System, from Texas to Georgia, was designated with the signing of the Infrastructure Investment and Jobs Act (IIJA) in November 2021. When constructed, I-14 will provide a national strategic link from the southern belt’s military forts to major marine ports used for deployment. https://www.congress.gov/bill/117th-congress/house-bill/3684/text

The Ports to Plains (P2P) System, from the Texas/Mexico border to New Mexico, was designated in the March Fiscal Year 2022 Omnibus. The P2P System in Texas will connect West and South Texas with Mexico through the international trade gateways of Laredo, Eagle Pass, and Del Rio. https://www.congress.gov/bill/117th-congress/senate-bill/705?q=%7B%22search%22%3A%5B%22H.R.+3%22%5D%7D&r=90&s=1The I-27 Numbering Act of 2023 was recently signed into law in March 2024 which designates Interstate numbers to certain segments of I-27. This is reflected in the "System" field in the popup when the route is selected on the map. The Legislation field also will state the new legislation.https://www.congress.gov/bill/118th-congress/senate-bill/992?q=%7B%22search%22%3A%22S.992%22%7D&s=1&r=1Publish Date: February 2023Update Frequency: Infrequently; as neededSecurity Level: Public