The following highways are numbered 3, H-3, PRI-3, AH3, E03 and R3. For roads numbered A3, see A3 roads. For roads numbered M3, see M3. For roads numbered N3, see N3. For roads numbered 3A, see 3A.
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A3 motorway (Albania)
SH-3 Road in Albania from Kapshtice to Tirana.
(Northern Territory)
M3/A3 (Brisbane) Burnett Highway (Queensland)
State Route 3 (Queensland) – Isis Highway
Cross Road State Route 3 (Western Australia) – Reid Highway and Roe Highway
Manitoba Highway 3
New Brunswick Route 3
Newfoundland and Labrador Route 3
Nova Scotia Trunk 3
Ontario Highway 3
Prince Edward Island Route 3
Quebec Route 3 (former)
Saskatchewan Highway 3
Yellowknife Highway (Northwest Territories Highway 3)
Yukon Highway 3
D3 motorway
I/3 Highway (in Czech)
National Route 3
Kyushu Expressway
Minamikyushu Expressway (branch of the Kyushu Expressway)
Route 3 (Shuto Expressway) in the Shibuya area of Tokyo
Route 3 (Nagoya Expressway)
Kobe Route
A 3 Autostrada A3 (planned 1993-2001; unbuilt)
S 3 Expressway S3
DK 3 National road 3
Thailand Route 3 (Sukhumvit Road)
M3 motorway (Great Britain)
A3 road (Great Britain) M3 motorway (Northern Ireland) A3 road (Northern Ireland)
Interstate 3 (proposed)
Interstate A-3 (unsigned)
Interstate H-3
Interstate PR-3 (unsigned)
U.S. Route 3
New England Interstate Route 3 (former)
Alabama State Route 3
Alaska Route 3
Arkansas Highway 3
California State Route 3
Colorado State Highway 3
Connecticut Route 3
Delaware Route 3
Florida State Road 3
Georgia State Route 3
Georgia State Route 3N (former)
Georgia State Route 3S (Thomaston) (former)
Georgia State Route 3W (Albany 1946–1957) (former) Georgia State Route 3W (Albany 1960–1973) (former) Georgia State Route 3W (Thomaston) (former) Georgia State Route 3W (Atlanta–Marietta 1937–1946) (former) Georgia State Route 3W (Atlanta–Marietta 1954–1955) (former)
Georgia State Route 3E (Thomaston) (former) Georgia State Route 3E (Atlanta–Marietta) (former)
Idaho State Highway 3
Illinois Route 3
Indiana State Road 3
Iowa Highway 3
K-3 (Kansas highway) Kentucky Route 3
Louisiana Highway 3
Louisiana State Route 3 (former)
Maine State Route 3
Maryland Route 3 Massachusetts Route 3
M-3 (Michigan highway)
Minnesota State Highway 3
Mississippi Highway 3
Missouri Route 3
Missouri Route 3 (1922) (former)
Montana Highway 3
Nebraska Highway 3 (former)
Nevada State Route 3 (former) New Jersey Route 3
New York State Route 3
New York State Route 3A (1930–1932) (former) New York State Route 3A (1932–1935) (former)
New York State Route 3B (1930–1932) (former) New York State Route 3B (1932–1935) (former)
New York State Route 3C (1930–1932) (former) New York State Route 3C (1932–1935) (former)
New York State Route 3D (1931–1932) (former) New York State Route 3D (1932–1935) (former)
New York State Route 3E (1930–1932) (former) New York State Route 3E (1932–1935) (former)
New York State Route 3F (1931–1932) (former) New York State Route 3F (1932–1935) (former)
New York State Route 3G (former)
County Route 3 (Allegany County, New York) County Route 3 (Cattaraugus County, New York) County Route 3 (Chemung County, New York)
County Route 3 (Dutchess County, New York) County Route 3 (Genesee County, New York) County Route 3 (Greene County, New York)
County Route 3 (Jefferson County, New York)
County Route 3 (Livingston County, New York) County Route 3 (Montgomery County, New York) County Route 3 (Niagara County, New York) County Route 3 (Oneida County, New York) County Route 3 (Ontario County, New York) County Route 3 (Oswego County, New York) County Route 3 (Otsego County, New York)
County Route 3 (Rensselaer County, New York)
County Route 3 (Schoharie County, New York)
County Route 3 (Schuyler County, New York)
County Route 3 (St. Lawrence County, New York) County Route 3 (Steuben County, New York)
County Route 3 (Suffolk County, New York) County Route 3 (Westchester County, New York)
North Carolina Highway 3
North Dakota Highway 3
Ohio State Route 3
Oklahoma State Highway 3
Oregon Route 3
Pennsylvania Route 3
Rhode Island Route 3
South Carolina Highway 3
Tennessee State Route 3
Texas State Highway 3
Utah State Route 3 (former)
Vermont Route 3
Virginia State Route 3
Washington State Route 3
Primary State Highway 3 (Washington) (former)
West Virginia Route 3| Preceded by 2 |
Lists of highways 3 |
Succeeded by 4 |
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| 0–9 |
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| 10–16 |
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| 17–22 |
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| 23–31 |
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| 32–44 |
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| 45–63 |
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| 64–85 |
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| 86–103 |
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| 104–125 |
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| 126–149 |
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| 150–174 |
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| 175–199 |
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| 200–224 |
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| 225–249 |
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| 250–274 |
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| 275–299 |
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| 300–324 |
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| 325–349 |
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| 350–374 |
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| 375–399 |
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| 400–424 |
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| 425–449 |
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| 450–474 |
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| 475–499 |
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| 500–524 |
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| 525–549 |
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| 550–574 |
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| 575–599 |
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| 600–624 |
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| 625–649 |
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| 650–674 |
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| 675–699 |
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| 700–724 |
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| 725–749 |
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| 750–774 |
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| 775–799 |
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| 800–824 |
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| 825–849 |
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| 850–874 |
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| 875–899 |
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| 900–924 |
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| 925–949 |
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| 950–974 |
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| 975–999 |
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| 1000+ |
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