Highway Needs Inventory

The Highway Needs Inventory (HNI) is a long-term, financially unconstrained technical reference and planning document that identifies highway improvements to serve existing and projected population and economic activity in the state. Development of the HNI is required under Transportation Article 8 of the Annotated Code of Maryland. The HNI serves as the Maryland Department of Transportation State Highway Administration (MDOT SHA) long-range, financially-unconstrained planning document and as a source of candidate projects for MDOT’s Consolidated Transportation Program (CTP). The Regional and Intermodal Planning Division (RIPD) works with counties and other MDOT SHA offices and districts to update the HNI triennially.

For detailed information on the HNI click on HNI Overview. (PDF, 47kb)

For HNI information on each county click below.

COUNTY Link Document Type Document Size
Allegany PDF 3.23 mb
Anne Arundel PDF 560 kb
Baltimore  PDF 708 kb
Calvert PDF 544 kb
Caroline PDF 3.07 mb
Carroll  PDF 572 kb
Cecil  PDF 3.18 mb
Charles PDF 580 kb
Dorchester PDF 3.17 mb
Frederick PDF 646 kb
Garrett  PDF 3.20 mb
Harford  PDF 656 kb
Howard  PDF 499 kb
Kent  PDF 3.12 mb
Montgomery PDF 649 kb
Prince George's  PDF 691 kb
Queen Anne's  PDF 3.33 mb
St. Mary's PDF 520 kb
Somerset PDF 2.90 mb
Talbot   PDF 3.18 mb
Washington   PDF 3.56 mb
Wicomico   PDF 3.06 mb
Worcester   PDF 3.15 mb


Shiva Shrestha
Highway Needs Inventory Coordinator
Regional and Intermodal Planning Division
MDOT State Highway Administration
707 North Calvert Street MS C-502
Baltimore MD 21201