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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.

“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 - 2014



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Maryland Department of Transportation


707 North Calvert Street Baltimore, Maryland 21202