From Wikipedia, the free encyclopedia
Primary Interstate highways
Route Number
|
Length
|
Western / Southern Terminus
|
Eastern / Northern Terminus
|
Counties
|
I-68
|
81.09 miles (130.50 km)
|
I-68 at
West Virginia state line
|
I-70/
US 40/
US 522 in
Hancock
|
Garrett,
Allegany,
Washington
|
I-70
|
93.62 miles (150.67 km)
|
I-70/
US 522 at
Pennsylvania state line near
Hancock
|
MD 122 at
Baltimore City line near
Woodlawn
|
Washington,
Frederick,
Carroll,
Howard,
Baltimore
|
I-81
|
12.08 miles (19.44 km)
|
I-81 at
West Virginia state line in
Williamsport
|
I-81 at
Pennsylvania state line near
Hagerstown
|
Washington
|
I-83
|
34.5 miles (55.5 km)
|
East Fayette & North President Streets and Fallsway in
Baltimore
|
I-83 at
Pennsylvania state line
|
Baltimore City,
Baltimore County
|
I-95
|
110.01 miles (177.04 km)
|
I-95/
I-495 in
Alexandria, VA
|
I-95 near
Newark, DE
|
Prince George's ,
Howard,
Baltimore County,
Baltimore City,
Harford,
Cecil
|
I-97
|
17.62 miles (28.36 km)
|
I-595/
US 50/
US 301 near
Annapolis
|
I-695 /
I-895 near
Baltimore
|
Anne Arundel
|
Source:
Maryland State Highway Administration,
Highway Location Reference, 2005
Auxiliary Interstate highways
Route Number
|
Length
|
Western / Southern Terminus
|
Eastern / Northern Terminus
|
Counties
|
I-170
|
Former Route
|
I-70 at Gwynns Falls Park
|
US 40 at MLK Blvd.
|
Baltimore City
|
I-270
|
34.40 miles (55.36 km)
|
I-70/
US 40 near
Frederick
|
I-495/
MD 355 north of
Bethesda
|
Frederick,
Montgomery
|
I-370
|
3.13 miles (5.04 km)
|
Sam Eig Highway & Washingtonian Boulevard in
Gaithersburg
|
Shady Grove Metro Station
|
Montgomery
|
I-195
|
4.88 miles (7.85 km)
|
I-95/
MD 166 near
Catonsville
|
Baltimore-Washington International Thurgood Marshall Airport
|
Baltimore County,
Anne Arundel
|
I-295
|
0.80 miles (1.29 km)
|
I-95/
I-495 near
Forest Heights
|
I-295 at
DC border
|
Prince George's
|
I-395
|
1.33 miles (2.14 km)
|
South Howard Street & West Conway Street in
Downtown Baltimore
|
I-95
|
Baltimore City
|
I-495
|
41.09 miles (66.13 km)
|
I-95/
I-495 at
Virginia state line
|
I-495 at
Virginia state line
|
Prince George's ,
Montgomery
|
I-595
|
19.97 miles (32.14 km)
|
I-95/
I-495/
Capital Beltway/
US 50 outside
Washington, DC
|
US 50/
US 301/
MD 70 in
Annapolis, MD
|
Prince George's ,
Anne Arundel
|
I-695
|
51.46 miles (82.82 km)
|
Beltway around
Baltimore
|
Baltimore City,
Anne Arundel,
Baltimore County
|
I-795
|
8.99 miles (14.47 km)
|
I-695 in
Pikesville
|
MD 140/
MD 795 in
Reisterstown
|
Baltimore County
|
I-895
|
14.87 miles (23.93 km)
|
I-95 near
Elkridge
|
I-95 in
Baltimore
|
Howard,
Baltimore County,
Anne Arundel,
Baltimore City
|
Source:
Maryland State Highway Administration,
Highway Location Reference, 2005
U.S. Highways
Route Number
|
Length
|
Western / Southern Terminus
|
Eastern / Northern Terminus
|
Counties
|
US 1
|
84 miles (135 km)
|
US 1 at
DC border in
Mount Rainier
|
US 1 at
Pennsylvania border near
Rising Sun
|
Prince George's ,
Howard,
Baltimore County,
Baltimore City,
Harford,
Cecil
|
US 11
|
12.83 miles (20.65 km)
|
US 11 at
West Virginia border near
Williamsport
|
US 11 at
Pennsylvania border near
Maugansville
|
Washington
|
US 13
|
42.48 miles (68.36 km)
|
US 13 at
Virginia border near
Pocomoke City
|
US 13 at
Delaware border in
Delmar
|
Worcester,
Somerset,
Wicomico
|
US 15
|
37.85 miles (60.91 km)
|
US 15 at
Virginia border near
Point of Rocks
|
US 15 at
Pennsylvania border near
Emmitsburg
|
Frederick
|
US 29
|
25.91 miles (41.70 km)
|
US 29 at
DC border near
Silver Spring
|
MD 99 in
Mount Hebron
|
Montgomery,
Howard
|
US 40
|
221.31 miles (356.16 km)
|
US 40 at
Pennsylvania border near
Addison, PA
|
US 40 at
Delaware border near
Glasgow, DE
|
Garrett,
Allegany,
Washington,
Frederick,
Carroll,
Howard,
Baltimore County,
Baltimore City,
Harford,
Cecil
|
US 48
|
Former Route
|
I-68 at
West Virginia state line near
Friendsville
|
I-70 near
Hancock
|
Garrett,
Allegany,
Washington
|
US 50
|
150.06 miles (241.50 km)
|
US 50 at
DC border in
Cheverly
[1]
|
MD 528 in
Ocean City
|
Garrett,
Prince George's,
Anne Arundel,
Queen Anne's,
Talbot,
Dorchester,
Wicomico,
Worcester
|
US 111
|
Former Route
|
US 1 in
Baltimore
|
U.S. Route 111 at
Pennsylvania border
|
Baltimore City,
Baltimore County
|
US 113
|
37.84 miles (60.90 km)
|
US 13 in
Pocomoke City
|
US 113 at
Delaware state line
|
Worcester
|
US 140
|
Former Route
|
US 140 at
Pennsylvania state line
|
US 1 in
Baltimore
|
Carroll,
Baltimore County,
Baltimore City
|
US 213
|
Former Route
|
US 50 in
Wye Mills
|
US 40 in
Elkton
|
Queen Anne's,
Kent,
Cecil
|
US 219
|
48.40 miles (77.89 km)
|
US 219 at
West Virginia border near
Redhouse
|
US 219 at
Pennsylvania border near
Grantsville
|
Garrett
|
US 220
|
27.35 miles (44.02 km)
|
US 220 at
West Virginia border near
McCoole
|
US 220 at
Pennsylvania border near
Cumberland
|
Allegany
|
US 222
|
3.60 miles (5.79 km)
|
US 1/
MD 222/
MD 222 Truck in
Conowingo, MD
|
US 222 at
Pennsylvania border
|
Cecil
|
US 240
|
Former Route
|
US 240 at
DC border
|
US 40 in
Frederick
|
Montgomery,
Frederick
|
US 301
|
123.30 miles (198.43 km)
|
US 301 at
Virginia border at
Governor Harry W. Nice Memorial Bridge
|
US 301 at
Delaware border in
Warwick
|
Charles,
Prince George's,
Anne Arundel,
Queen Anne's,
Kent,
Cecil
|
US 340
|
16.99 miles (27.34 km)
|
US 340 at
Virginia border near
Weverton
|
US 40 in
Frederick
|
Washington,
Frederick
|
US 522
|
2.37 miles (3.81 km)
|
US 522 at
West Virginia border near
Hancock
|
I-70/
US 522 at
Pennsylvania border near
Hancock
|
Washington
|
US 622
|
Former Route
|
US 40 in
Hancock
|
US 622 near
Hancock
|
Washington
|
Source:
Maryland State Highway Administration,
Highway Location Reference, 2005
-
^ A short western segment of US 50 in Maryland runs through Garrett County, entering
West Virginia at both ends