The Maryland highway system is a network of highways owned and maintained by the

U.S. state In the United States, a state is a constituent political entity, of which there are 50. Bound together in a political union, each state holds governmental jurisdiction over a separate and defined geographic territory where it shares its sove ...

Maryland Maryland ( ) is a state in the Mid-Atlantic region of the United States. It shares borders with Virginia, West Virginia, and the District of Columbia to its south and west; Pennsylvania to its north; and Delaware and the Atlantic Ocean to ...

. In addition to the nationally numbered Interstate Highways and

U.S. Highways The United States Numbered Highway System (often called U.S. Routes or U.S. Highways) is an integrated network of roads and highways numbered within a nationwide grid in the contiguous United States. As the designation and numbering of these h ...

, the highway system consists of a network of Maryland state-numbered highways. All three types of highways together provide access to all incorporated and

unincorporated Unincorporated may refer to: * Unincorporated area, land not governed by a local municipality * Unincorporated entity, a type of organization * Unincorporated territories of the United States, territories under U.S. jurisdiction, to which Congress ...

areas in all 23 counties of Maryland as well as the

independent city An independent city or independent town is a city or town that does not form part of another general-purpose local government entity (such as a province). Historical precursors In the Holy Roman Empire, and to a degree in its successor states ...

Baltimore Baltimore ( , locally: or ) is the List of municipalities in Maryland, most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic (United States), Mid-Atlantic, and List of United States cities by popula ...

Highway systems

Interstate highways

Maryland has 16 Interstate highways, including six primary Interstates and ten auxiliary Interstates. The longest Interstate in Maryland is Interstate 95, while the shortest Interstate is

I-295 Interstate 295 is the designation for several Interstate Highways in the United States: *Interstate 295 (Delaware–Pennsylvania), a bypass of Philadelphia, Pennsylvania * Interstate 295 (Florida), a beltway around central Jacksonville * Interstate ...

. Maryland also contains an

unsigned Unsigned can refer to: * An unsigned artist is a musical artist or group not attached or signed to a record label ** Unsigned Music Awards, ceremony noting achievements of unsigned artists ** Unsigned band web, online community * Similarly, the c ...

Interstate, I-595; a former Interstate, I-170; and an intracounty Interstate, I-97, which is also the shortest primary highway in the Interstate Highway System.

U.S. highways

Maryland has 14 U.S. Highways, including seven primary U.S. Highways and seven auxiliary U.S. highways. The longest U.S. highway in Maryland is U.S. Route 40, while the shortest U.S. highway is

US 522 U.S. Route 522 (US 522) is a spur route of US 22 in the states of Virginia, West Virginia, Maryland, and Pennsylvania. The U.S. Highway travels in a north-south direction, and runs from US 60 near Powhatan, Virginia, to its northern terminus a ...

. Maryland also contains six former U.S. highways.

Maryland state highways

Maryland has a unitary system of numbered state highways with numbers between 2 and 999. The longest Maryland state highway is Maryland Route 2, while several state highways are less than in length. Most of the shortest highways are

. Several state highways have multiple disjoint segments that are denoted internally by suffixes, encompassing either old alignments of a major highway or a collection of service roads related to a particular highway.

Other systems

There are other systems of highways in Maryland that are not marked but are numbered internally. * County highways: All 23 counties have internal numerical designations for all highways under their jurisdiction. * Municipal highways: Every city, town, and village maintains an internal system of numerically designated municipal streets. * Federal government or agency highways: Highways maintained by the federal government or agencies such as the

Maryland-National Capital Park and Planning Commission The Maryland-National Capital Park and Planning Commission (M-NCPPC) is a bi-county agency that administers parks and planning in Montgomery and Prince George's counties in Maryland. History The commission was formed in 1927 by the Maryland ...

are designated inventory numbers. Examples of highways within this category include parkways, such as the

Clara Barton Parkway Clara Barton Parkway is an automobile parkway in the U.S. state of Maryland and the District of Columbia. The highway runs from MacArthur Boulevard in Carderock, Maryland, east to Canal Road at the Chain Bridge in Washington. Clara Barton Pa ...

Sligo Creek Parkway Sligo Creek Parkway is a two-lane at-grade automobile parkway in Montgomery County, Maryland, Montgomery County in the U.S. state of Maryland. The two-lane parkway runs from Maryland Route 650 (MD 650) in Takoma Park, Maryland, Takoma Park thro ...

; streets on federal research campuses, such as those of the

National Institutes of Health The National Institutes of Health, commonly referred to as NIH (with each letter pronounced individually), is the primary agency of the United States government responsible for biomedical and public health research. It was founded in the late ...

or Goddard Space Flight Center; roads on military bases, such as those on

Fort Meade Fort George G. Meade is a United States Army installation located in Maryland, that includes the Defense Information School, the Defense Media Activity, the United States Army Field Band, and the headquarters of United States Cyber Command, the ...

; and roads within reservations of the

National Park Service The National Park Service (NPS) is an agency of the United States federal government within the U.S. Department of the Interior that manages all national parks, most national monuments, and other natural, historical, and recreational propert ...

, such as Bayberry Drive within Assateague Island National Seashore. * State reservation highways: Highways maintained by non-highways agencies of the state of Maryland. Examples of highways within this categories include streets on state university campuses, access roads to state parks and state forests, and highways within state-owned airports.

Highway agencies

Maryland State Highway Administration

The vast majority of Interstate, U.S., and state highways are constructed by and maintained by the Maryland State Highway Administration (MDSHA).

Maryland Transportation Authority

All toll facilities in the state and limited access highways within Baltimore except

I-83 Interstate 83 (I-83) is an Interstate Highway in the Eastern United States. Its southern terminus is at a signalized intersection with Fayette Street in Baltimore, Maryland; its northern terminus is at I-81 near Harrisburg, Pennsylvania. Mo ...

are constructed and maintained by the Maryland Transportation Authority (MdTA).

Other agencies

All U.S. and state highways and I-83 within Baltimore are maintained by the

Baltimore City Department of Transportation Baltimore ( , locally: or ) is the most populous city in the U.S. state of Maryland, fourth most populous city in the Mid-Atlantic, and the 30th most populous city in the United States with a population of 585,708 in 2020. Baltimore was ...

. Portions of U.S. and state highways within particular cities and towns are maintained by the respective municipalities.

Gallery

File:2016-09-21 17 08 38 View east along Maryland State Route 80 (Fingerboard Road) between Maryland State Route 75 (Green Valley Road) and Chaucer Court in Fountain Mills, Frederick County, Maryland.jpg,

Maryland Route 80 Maryland Route 80 (MD 80) is a state highway in the U.S. state of Maryland. Known for most of its length as Fingerboard Road, the highway runs from MD 85 in Buckeystown east to MD 27 near Damascus. MD 80 connects Buckeystown and Urbana in ...

File:2016-07-20 15 10 27 View east along Maryland State Route 231 (Hallowing Point Road) at J W Williams Road in Barstow, Calvert County, Maryland.jpg,

Maryland Route 231 Maryland Route 231 (MD 231) is a state highway in the U.S. state of Maryland. The state highway runs from Olivers Shop Road near Hughesville east to MD 765 in Prince Frederick. MD 231 crosses the Patuxent River on ...

File:2017-08-28 09 35 38 View south along U.S. Route 113 (Worcester Highway) at Maryland State Route 756 (Old Snow Hill Road) just northeast of Pocomoke City in Worcester County, Maryland.jpg, U.S. Route 113 File:Casselman River Maryland.jpg, U.S. Route 40 Alternate (Keysers Ridge–Cumberland, Maryland) File:2016-09-16 13 55 45 View north along Interstate 95 just north of Exit 35 (Maryland State Route 216, Laurel, Scaggsville) in North Laurel, Howard County, Maryland.jpg, Interstate 95