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State Highway Administration


Highway Location Reference

The Highway Location Reference (HLR) provides a method for uniquely identifying roadway locations (milepoints) and to identify data elements that are most commonly requested. Please read the Introduction and General Information (PDF, 32kb) for more information.To download a free copy of Adobe Reader, click here.

“The Highway Location Reference is also available in a hard-copy book by SHA district. If you would like to receive the book, write to:”

Mr. Kevin Powers
Maryland State Highway Administration
Data Services Engineering Division
707 North Calvert Street
Mail Stop C-607
Baltimore, Maryland 21202


Highway Location Reference “All Intersections” Report for Years 1999 - 2015

Current 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

Archived Years

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.2014 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 report documents vary. It may take a few seconds or a few minutes to display. Please be patient while the file downloads.




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Maryland Department of Transportation


707 North Calvert Street Baltimore, Maryland 21202