List of Interstate Highways in Maryland

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

The following is a list of Interstate Highways in Maryland. There are currently 16 Interstate Highways that exist entirely or partially in the U.S. state of Maryland. 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 (commonly abbreviated I-95) at 110.01 mi (177.04 km). The shortest primary Interstate in Maryland is I-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 is I-695 at 51.48 mi (82.85 km). The shortest auxiliary Interstate in Maryland is I-295 at 0.80 mi (1.29 km). All Interstates are maintained by the Maryland State Highway Administration except for all of I-395, all of I-895, a small part of I-695, I-95 within and north of Baltimore, and I-83 within Baltimore. Maryland has one unsigned Interstate, I-595; that highway is marked as U.S. Route 50 and US 301, which are concurrent with I-595 for its entire length. Maryland has one former Interstate, I-170, which is 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 the West Virginia state line near Friendsville	I-70 / US 40 / US 522 in Hancock	1991[2]	current
I-70	93.62	150.67	I-70 / US 522 at the Pennsylvania state line in Hancock	MD 122 / Park and ride in Baltimore	1962[3]	current	Frederick–Baltimore section was designated I-70N in 1965;[4] that section became part of I-70 in 1974[5]
I-81	12.08	19.44	I-81 at the West Virginia state line in Williamsport	I-81 at the Pennsylvania state line near Hagerstown	1959[6]	current
I-83	34.50	55.52	Fayette Street and President Street in Baltimore	I-83 at the Pennsylvania state line at Maryland Line	1959[6]	current
I-95	110.01	177.04	I-95 / I-495 at the Virginia state line near Oxon Hill	I-95 at the Delaware state line near Elkton	1963[7]	current
I-97	17.62	28.36	US 50 / US 301 in Parole	I-695 / I-895 in Ferndale	1987[8]	current
I-170	1.40	2.25	US 1 / US 40 in Baltimore	US 40 in Baltimore	1981[9]	1985[10]	Replaced by US 40
I-195	4.35	7.00	I-95 / MD 166 in Arbutus	MD 170 near BWI Airport	1989[11]	current
I-270	32.60	52.46	I-495 / MD 355 in Bethesda	I-70 / US 40 in Frederick	1959[6]	current	Designated I-70S in 1959; became I-270 in 1974[5]
I-295	0.80	1.29	I-95 / I-495 / MD 210 in Oxon Hill	I-295 in Washington, D.C.	1965[4]	current
I-370	2.54	4.09	Sam Eig Highway in Gaithersburg	MD 200 in Redland	1989[11]	current
I-395	1.33	2.14	I-95 in Baltimore	Howard Street and Camden Street in Baltimore	1981[9]	current
I-495	41.09	66.13	I-95 / I-495 at the Virginia state line near Oxon Hill	I-495 at the Virginia state line near Cabin John	1963[7]	current	Beltway around Washington, D.C.
I-595	19.97	32.14	I-95 / I-495 / US 50 near Glenarden	US 50 / US 301 / MD 70 in Parole	1991	current	Unsigned highway; signed as US 50 and US 301
I-695	51.46	82.82	Beltway around Baltimore		1959[6]	current
I-795	8.99	14.47	I-695 in Pikesville	MD 140 / MD 795 in Reisterstown	1985[10]	current
I-895	14.87	23.93	I-95 in Elkridge	I-95 in Baltimore	1979[12]	current

See also

• Maryland Roads portal

References

1. Highway Information Services Division (December 31, 2013). Highway Location Reference. Maryland State Highway Administration. Retrieved 2012-10-06.
2. Maryland State Highway Administration (1991). Maryland: Official Highway Map (Map). Baltimore: Maryland State Highway Administration.
3. Maryland State Roads Commission (1962). Maryland: Official Highway Map (Map). Baltimore: Maryland State Roads Commission.
4. Maryland State Roads Commission (1965). Maryland: Official Highway Map (Map). Baltimore: Maryland State Roads Commission.
5. Maryland State Highway Administration (1974). Maryland: Official Highway Map (Map). Baltimore: Maryland State Highway Administration.
6. Maryland State Roads Commission (1959). Maryland: Official Highway Map (Map). Baltimore: Maryland State Roads Commission.
7. Maryland State Roads Commission (1963). Maryland: Official Highway Map (Map). Baltimore: Maryland State Roads Commission.
8. Maryland State Highway Administration (1987). Maryland: Official Highway Map (Map). Baltimore: Maryland State Highway Administration.
9. Maryland State Highway Administration (1981). Maryland: Official Highway Map (Map) (1981–82 ed.). Baltimore: Maryland State Highway Administration.
10. Maryland State Highway Administration (1985). Maryland: Official Highway Map (Map) (1985–86 ed.). Baltimore: Maryland State Highway Administration.
11. Maryland State Highway Administration (1989). Maryland: Official Highway Map (Map). Baltimore: Maryland State Highway Administration.
12. Maryland State Highway Administration (1979). Maryland: Official Highway Map (Map) (1979–80 ed.). Baltimore: Maryland State Highway Administration.