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List of Interstate Highways in Maryland

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From Wikipedia, the free encyclopedia

Interstate Highways of the Maryland highway system
Standard route signs in Maryland
Interstate Highways highlighted in red
Highway names
Interstates	Interstate X (I-X)
System links
Maryland highway system Interstate US State Scenic Byways

The following is alist of Interstate Highways in Maryland. There are currently 16Interstate Highways that exist entirely or partially in theU.S. state ofMaryland. Six of these are primary interstates while ten are auxiliary interstates related to one of the primary interstates. The longest primary interstate in Maryland isInterstate 95 (commonly abbreviated I-95) at 110.01 mi (177.04 km). The shortest primary interstate in Maryland isI-81 at 12.08 mi (19.44 km).I-97 is the shortest primary interstate at 17.62 mi (28.36 km) 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 isI-695 at 51.48 mi (82.85 km). The shortest auxiliary interstate in Maryland isI-295 at 0.80 mi (1.29 km). All interstates are maintained by theMaryland State Highway Administration except for all ofI-395, all ofI-895, a small part of I-695, I-95 within and north ofBaltimore, andI-83 within Baltimore. Maryland has one unsigned interstate,I-595; that highway is marked asU.S. Route 50 andUS 301, which areconcurrent with I-595 for its entire length. Maryland has three former interstates which are shaded in dark gray in the list.


Number	Length (mi)^[1]	Length (km)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
I-68	81.09	130.50	I-68 at theWest Virginia state line nearFriendsville	I-70 /US 40 /US 522 inHancock	01991-01-011991^[2]	current	Formerly designated as US 48.
I-70	91.85	147.82	I-70 /US 522 at thePennsylvania state line inHancock	I-695 /MD 570 inWoodlawn	01962-01-011962^[3]	current	Frederick–Baltimore section was designated I-70N in 1965;^[4] that section became part of I-70 in 1974^[5]
I-70N	93.62	150.67	I-70 inFrederick	MD 122 /Park and ride inBaltimore	01965-01-011965^[3]	01974-01-011974	Frederick–Baltimore section was designated I-70N in 1965;^[4] that section became part of I-70 in 1974^[5]
I-70S	32.60	52.46	I-495 /MD 355 inBethesda	I-70 /US 40 inFrederick	01959-01-011959^[6]	01974-01-011974	Designated I-70S in 1959; became I-270 in 1974^[5]
I-81	12.08	19.44	I-81 at theWest Virginia state line inWilliamsport	I-81 at thePennsylvania state line nearHagerstown	01959-01-011959^[6]	current
I-83	34.50	55.52	Fayette Street and President Street inBaltimore	I-83 at thePennsylvania state line atMaryland Line	01959-01-011959^[6]	current
I-95	109.01	175.43	I-95 /I-495 at theVirginia state line nearOxon Hill	I-95 at theDelaware state line nearElkton	01963-01-011963^[7]	current
I-97	17.62	28.36	US 50 /US 301 inParole	I-695 /I-895 inFerndale	01987-01-011987^[8]	current
I-170	1.40	2.25	US 1 /US 40 inBaltimore	US 40 inBaltimore	01981-01-011981^[9]	01985-01-011985^[10]	Replaced byUS 40
I-195	4.35	7.00	I-95 /MD 166 inArbutus	MD 170 nearBWI Airport	01989-01-011989^[11]	current
I-270	32.60	52.46	I-495 /MD 355 inBethesda	I-70 /US 40 inFrederick	01974-01-011974^[6]	current	Designated I-70S in 1959; became I-270 in 1974^[5]
I-270Y	2.10	3.38	I-495 nearBethesda	I-270 nearNorth Bethesda	01974-01-011974	current	Known as I-270 Spur but referred to as I-270Y by MDSHA. Was originally I-270 when the current I-270 was I-70S.
I-295	0.80	1.29	I-95 /I-495 /MD 210 inOxon Hill	I-295 inWashington, D.C.	01965-01-011965^[4]	current
I-370	2.54	4.09	Sam Eig Highway inGaithersburg	MD 200 inRedland	01989-01-011989^[11]	current
I-395	1.33	2.14	I-95 inBaltimore	Howard Street and Camden Street inBaltimore	01981-01-011981^[9]	current
I-495	41.09	66.13	I-95 /I-495 at theVirginia state line nearOxon Hill	I-495 at theVirginia state line nearCabin John	01963-01-011963^[7]	current	Beltway aroundWashington, D.C.
I-595	19.97	32.14	I-95 /I-495 /US 50 nearGlenarden	US 50 /US 301 /MD 70 inParole	01991-01-011991	current	Unsigned highway; signed asUS 50 andUS 301
I-695	51.46	82.82	Beltway aroundBaltimore		01959-01-011959^[6]	current
I-795	8.99	14.47	I-695 inPikesville	MD 140 /MD 795 inReisterstown	01985-01-011985^[10]	current
I-895	14.87	23.93	I-95 inElkridge	I-95 inBaltimore	01979-01-011979^[12]	current
I-895A	0.71	1.14	I-97 inBrooklyn Park	I-895B inBrooklyn Park	01957-01-011957	current	NorthwardUnsigned highway extension ofI-97
I-895B	2.67	4.30	MD 2 inBrooklyn Park	I-895 inBrooklyn Park	01957-01-011957	current	Unsigned highway except for mile marker posts
Former

References

[edit]

^Highway Information Services Division (December 31, 2013).Highway Location Reference. Maryland State Highway Administration. RetrievedOctober 6, 2012.
^Maryland State Highway Administration (1991).Maryland: Official Highway Map(PDF) (Map). Baltimore: Maryland State Highway Administration.
^^a ^bMaryland State Roads Commission (1962).Maryland: Official Highway Map(PDF) (Map). Baltimore: Maryland State Roads Commission.
^^a ^b ^cMaryland State Roads Commission (1965).Maryland: Official Highway Map(PDF) (Map). Baltimore: Maryland State Roads Commission.
^^a ^b ^c ^dMaryland State Highway Administration (1974).Maryland: Official Highway Map(PDF) (Map). Baltimore: Maryland State Highway Administration.
^^a ^b ^c ^d ^eMaryland State Roads Commission (1959).Maryland: Official Highway Map(PDF) (Map). Baltimore: Maryland State Roads Commission.
^^a ^bMaryland State Roads Commission (1963).Maryland: Official Highway Map(PDF) (Map). Baltimore: Maryland State Roads Commission.
^Maryland State Highway Administration (1987).Maryland: Official Highway Map(PDF) (Map). Baltimore: Maryland State Highway Administration.
^^a ^bMaryland State Highway Administration (1981).Maryland: Official Highway Map(PDF) (Map) (1981–1982 ed.). Baltimore: Maryland State Highway Administration.
^^a ^bMaryland State Highway Administration (1985).Maryland: Official Highway Map(PDF) (Map) (1985–1986 ed.). Baltimore: Maryland State Highway Administration.
^^a ^bMaryland State Highway Administration (1989).Maryland: Official Highway Map(PDF) (Map). Baltimore: Maryland State Highway Administration.
^Maryland State Highway Administration (1979).Maryland: Official Highway Map(PDF) (Map) (1979–1980 ed.). Baltimore: Maryland State Highway Administration.

v t e Maryland highway system
Lists of highways	Interstate Highways U.S. Highways Maryland state highways
Shorter than 1 mile (1.6 km)	2–699 700–799 800–899 900–999
Former state highways	2–199 200–399 400–499 500–599 600–699 700–999
Highway agencies	Maryland State Highway Administration (MDSHA) Maryland Transportation Authority (MDTA)
Other articles	Maryland Scenic Byways Baltimore Harbor Tunnel Fort McHenry Tunnel Baltimore–Washington Parkway Suitland Parkway Clara Barton Parkway