Highway Location Reference

The Highway Location Reference (HLR) provides key data by roadway location (milepoint). See the Introduction and General Information (PDF, 53kb) for more information. To download a free copy of Adobe Reader, click here.

Beginning with the 2018 HLR report we have slightly changed the format of the report and would like to receive your feedback regarding these changes. The maps and other associated data are available via the links below.
Note: We did not publish HLR in 2017, so the next year after 2016 is 2018.

Maps associated with data in the reports

If you have any questions or concerns, please contract us at: 
Maryland State Highway Administration
Data Services Division
707 North Calvert Street
Mail Stop C-607
Baltimore, Maryland 21202

Highway Location Reference “All Intersections” Reports

Most Recent Available Year

Allegany County Dorchester County Queen Anne's County
Anne Arundel County Frederick County St. Mary's County
Baltimore County Garrett County Somerset County
Calvert County Harford County Talbot County
Caroline County Howard County Washington County
Carroll County Kent County Wicomico County
Cecil County Montgomery County Worcester County
Charles County Prince George's County Baltimore City

Archived Years (1999-2021)

To find a HLR report document, click on the county in the map. This will then open a pop-up window, displaying the individual year for each available HLR report document. Selecting one of the years, e.g.2016 will open the document in your browser for either viewing, printing or download.

View map in full screen or on mobile device

Please Note: The PDF file sizes for the HLR reports vary. Please be patient while your file downloads.