MDOT SHA Roadway Administrative Classification (State Classifications) data consists of linear geometric features which specifically show State-maintained roadways included in the State Primary & State Secondary systems throughout the State of Maryland. Roadway Administrative Classification is primarily used for general planning & funding purposes by showcasing the State Primary vs. State Secondary highway systems. 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. Roadway Administrative Classification is not a complete representation of all roadway geometry.

MDOT SHA Roadway Administrative Classification data is maintained & updated by the MDOT SHA Office of Planning & Preliminary Engineering (OPPE) Data Services Division (DSD). Roadway Administrative Classification data is used by various business units throughout MDOT, as well as many other Federal, State and local government agencies. Roadway Administrative Classification data is key to understanding which State-maintained roadways are included in the State Primary & State Secondary systems throughout Maryland.

Roadway Administrative Classification data is updated & published on an annual basis for the prior year. This data is for the year 2019. This data was last updated in August 2020.

Last Updated: August 2020 (08/01/2020),

For additional information, contact MDOT SHA OIT Enterprise Information Services:

Email: GIS@mdot.maryland.gov