The following is a list of Interstate Highways in Maryland. There are currently 16

Interstate Highways The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, is a network of controlled-access highways that forms part of the National Highway System in the United States. Th ...

that exist entirely or partially in 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 sover ...

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 ...

. Six of these are primary interstates while ten are auxiliary interstates related to one of the primary interstates. The longest primary interstate in Maryland is

Interstate 95 Interstate 95 (I-95) is the main north–south Interstate Highway on the East Coast of the United States, running from U.S. Route 1, US Route 1 (US 1) in Miami, Miami, Florida, to the Houlton–Woodstock Border Crossing between M ...

(commonly abbreviated I-95) at . The shortest primary interstate in Maryland is

I-81 Interstate 81 (I-81) is a north–south (physically northeast–southwest) Interstate Highway in the eastern part of the United States. Its southern terminus is at I-40 in Dandridge, Tennessee; its northern terminus is on Wellesley Island ...

at .

I-97 Interstate 97 (I-97) is a part of the Interstate Highway System that runs entirely within Anne Arundel County, Maryland. The Interstate runs from U.S. Route 50 (US 50)/US 301 in Parole near Annapolis north to I-695 and I-895 in Brooklyn ...

is the shortest primary interstate at and the shortest intrastate interstate. I-97 is also the only primary interstate to be located entirely within one county and to not connect with any other primary interstate. The longest auxiliary interstate in Maryland is I-695 at . The shortest auxiliary interstate in Maryland 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 29 ...

at . All interstates are maintained by the

Maryland State Highway Administration The Maryland State Highway Administration (abbreviated MDOT SHA or simply SHA) is the state transportation business unit responsible for maintaining Maryland's numbered highways outside Baltimore City. Formed originally under authority of the Ge ...

except for all of

I-395 Interstate 395 may refer to: *Interstate 395 (Connecticut–Massachusetts), a spur from I-95 to Auburn, Massachusetts *Interstate 395 (Delaware), a proposed portion of I-95 in Delaware, when it was under construction *Interstate 395 (Florida), a spu ...

, all of I-895, a small part of I-695, I-95 within and north of

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 ...

, and

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. Most ...

within Baltimore. Maryland has one unsigned interstate, I-595; that highway is marked as

U.S. Route 50 U.S. Route 50 or U.S. Highway 50 (US 50) is a major east–west route of the U.S. Highway system, stretching from Interstate 80 (I-80) in West Sacramento, California, to Maryland Route 528 (MD 528) in Ocean City, Maryland, on the Atlanti ...

and

US 301 U.S. Route 301 (US 301) is a spur of U.S. Route 1 running through the South Atlantic States. It runs from Biddles Corner, Delaware at Delaware Route 1 to Sarasota, Florida at U.S. Route 41. It passes through the states of Delaware, Mar ...

, which are

concurrent Concurrent means happening at the same time. Concurrency, concurrent, or concurrence may refer to: Law * Concurrence, in jurisprudence, the need to prove both ''actus reus'' and ''mens rea'' * Concurring opinion (also called a "concurrence"), a ...

with I-595 for its entire length. Maryland has three former interstates which are shaded in dark gray in the list.

References

{{Roads in Maryland

Interstate highways The Dwight D. Eisenhower National System of Interstate and Defense Highways, commonly known as the Interstate Highway System, is a network of controlled-access highways that forms part of the National Highway System in the United States. Th ...

See also

References