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MDOT SHA Roadway National Highway System (NHS) [Maryland]

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Title
MDOT SHA Roadway National Highway System (NHS) [Maryland]
Description
Esri ArcGIS Online (AGOL) Hosted Feature Layer for accessing the MDOT SHA Roadway National Highway System (NHS) data product. MDOT SHA Roadway National Highway System (NHS) data consists of linear geometric features which represent the geographic extent of roadways throughout the State of Maryland that are included in the National Highway System (NHS). MDOT SHA Roadway NHS data is includes information such as NHS Facility Description & Type, along with the government agency responsible for maintaining the roadway. MDOT SHA Roadway NHS data is primarily used for general planning purposes, and for Federal Highway Administration (FHWA) Highway Performance Monitoring System (HPMS) annual submission & coordination. The Maryland Department of Transportation State Highway Administration (MDOT SHA) currently reports this data only on the inventory direction (generally North or East) side of the roadway. MDOT SHA Roadway NHS data is not a complete representation of all roadway geometry. MDOT SHA Roadway NHS data is developed as part of the Highway Performance Monitoring System (HPMS) which maintains and reports transportation related information to the Federal Highway Administration (FHWA) on an annual basis. HPMS is maintained by the Maryland Department of Transportation State Highway Administration (MDOT SHA), under the Office of Planning and Preliminary Engineering (OPPE) Data Services Division (DSD). MDOT SHA Roadway NHS data is used by various business units throughout MDOT, as well as many other Federal, State and local government agencies. MDOT SHA Roadway NHS data is key to understanding which roadways are included within the NHS from the State of Maryland. MDOT SHA Roadway NHS data is owned & maintained by the MDOT SHA Office of Planning & Preliminary Engineering (OPPE). MDOT SHA Roadway NHS data is updated & published on an annual basis for the prior year. This data is for the year 2022. View the most current MDOT SHA Roadway NHS data in the Maryland NHS Routes w/ Maintenance Responsibility Application For more information related to the data, contact MDOT SHA OPPE Data Services Division (DSD): Email: DSD@mdot.maryland.gov For more information, contact MDOT SHA OIT Enterprise Information Services: Email: GIS@mdot.maryland.gov
Creator
ArcGIS Online for Maryland
Publisher
Maryland iMap
Temporal Coverage
Last Modified: 2024-08-30
Date Issued
2021-05-11
Rights
This data is provided “AS IS” without warranty of any kind, either expressed or implied. The Maryland Department of Transportation assumes no responsibility for errors or omissions in this data or other documents which are referenced by or linked to this data. In no event shall the Maryland Department of Transportation (MDOT) be liable for any special, incidental, indirect, or consequential damages of any kind, or any damages whatsoever, including, without limitation, those resulting from loss of use, data or profits, whether or not advised of the possibility of damage, and on any theory of liability, arising out of or in connection with the user or performance of this information. This data could contain technical or other inaccuracies or typographical errors. The Maryland Department of Transportation (MDOT) may make improvements and/or changes in the product(s) and/or the program(s) described in this publication at any time.
Access Rights
Public
Format
ArcGIS FeatureLayer
Language
English
Date Added
August 10, 2025
Provenance Statement
The metadata for this resource was last retrieved from Maryland iMap on 2026-01-08.

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Cite and Reference

  • Citation
    ArcGIS Online for Maryland (2021). MDOT SHA Roadway National Highway System (NHS) [Maryland]. Maryland iMap. https://data.imap.maryland.gov/datasets/maryland::mdot-sha-roadway-national-highway-system-nhs (web service)
  • BTAA Geoportal Link

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