List of highways numbered 42

The following highways are numbered 42.

International

 * Asian Highway 42
 * European route E42

Australia

 * National Route 42 – part of Cunningham Highway

Alberta

 * Alberta Highway 42.svg Alberta Highway 42

Manitoba

 * Manitoba Highway 42.svg Manitoba Highway 42
 * Winnipeg city route 42.svg Winnipeg Route 42

Ontario

 * Chatham-Kent Road 42
 * Elgin County Road 42
 * Essex County Road 42.png County Road 42 (Essex County, Ontario)
 * Greater Sudbury Road 42
 * Halton Regional Road 42
 * Leeds and Grenville County Road 42 (former Ontario King's Highway 42.svg Ontario Highway 42)
 * Middlesex County Road 42
 * Muskoka Road 42
 * Niagara Regional Road 42
 * Norfolk County Road 42
 * Ottawa Road 42
 * Renfrew County Road 42
 * Simcoe County Road 42.JPG Simcoe County Road 42
 * Wellington County Road 42

Saskatchewan

 * Saskatchewan Highway 42 (jct).svg Saskatchewan Highway 42

China

 * China Expwy G42 sign with name.svg G42 Expressway

Hungary

 * 42 (Hu) Otszogletu zold tabla.svg Main road 42 (Hungary)

India

 * NH42-IN.svg National Highway 42 (India)

Israel

 * ISR-HW-42.svg Highway 42 (Israel)

Japan

 * Japanese National Route Sign 0042.svg Japan National Route 42
 * JP Expressway E42.svg Hanwa Expressway
 * JP Expressway E42.svg Kisei Expressway

Korea, South

 * Korea National Route No.42.svg National Route 42

Poland

 * Tabliczka DK42.svg National Road 42 (Poland)

Thailand

 * Thai Highway-42.svg Thailand Route 42 (Sadao-Sungai Kolok)

United Kingdom

 * UK road A42.svg English A42 (Appleby Magna-Kegworth)
 * UK road A42.svg Northern Ireland A42 (Maghera-Carnlough)
 * UK-Motorway-M42.svg British M42 (Appleby Magna-Bromsgrove)

United States

 * I-42 (Future).svg Interstate 42 (proposed)
 * US 42.svg U.S. Route 42
 * Alabama 42.svg Alabama State Route 42 (former)
 * Arkansas 42.svg Arkansas Highway 42
 * California 42.svg California State Route 42 (former)
 * CR J42 jct.svg County Route J42 (California)
 * Colorado 42.svg Colorado State Highway 42
 * Connecticut Highway 42.svg Connecticut Route 42
 * Elongated circle 42.svg Delaware Route 42
 * Florida 42.svg Florida State Road 42 (former)
 * Lake County Road 42 FL.svg County Road 42 (Lake County, Florida)
 * Marion County Road 42 FL.svg County Road 42 (Marion County, Florida)
 * Georgia 42.svg Georgia State Route 42
 * Georgia 42A (1920).svg Georgia State Route 42A (former)
 * Illinois 42.svg Illinois Route 42 (former)
 * Illinois 42A.svg Illinois Route 42A (former)
 * Indiana 42.svg Indiana State Road 42
 * Elongated circle 42.svg Iowa Highway 42 (former)
 * K-42.svg K-42 (Kansas highway)
 * Louisiana 42.svg Louisiana Highway 42
 * Louisiana 42 (1924).svg Louisiana State Route 42 (former)
 * MD Route 42.svg Maryland Route 42
 * Maryland Route 42A
 * M-42.svg M-42 (Michigan highway)
 * MN-42.svg Minnesota State Highway 42
 * Dakota County Route 42.svg County Road 42 (Dakota County, Minnesota)
 * CR 42 jct.svg County Road 42 (Ramsey County, Minnesota)
 * Scott County Route 42 MN.svg County Road 42 (Scott County, Minnesota)
 * Ellipse sign 42.svg Mississippi Highway 42
 * MO-42.svg Missouri Route 42
 * MT-42.svg Montana Highway 42
 * N-42.svg Nebraska Highway 42 (former)
 * N SPUR 42A.svg Nebraska Spur 42A
 * Nevada 42.svg Nevada State Route 42 (former)
 * Ellipse sign 42.svg New Jersey Route 42
 * Bergen County Route 42 NJ.svg County Route 42 (Bergen County, New Jersey)
 * Monmouth County Route 42 NJ.svg County Route 42 (Monmouth County, New Jersey)
 * New Mexico 42.svg New Mexico State Road 42
 * NY-42.svg New York State Route 42
 * CR 42 jct.svg County Route 42 (Allegany County, New York)
 * CR 42 jct.svg County Route 42 (Cattaraugus County, New York)
 * County Route 42B (Cayuga County, New York)
 * CR 42 jct.svg County Route 42 (Chautauqua County, New York)
 * CR 42 jct.svg County Route 42 (Chenango County, New York)
 * Dutchess County Route 42 NY.svg County Route 42 (Dutchess County, New York)
 * Erie County Route 42 NY.svg County Route 42 (Erie County, New York)
 * CR 42 jct.svg County Route 42 (Genesee County, New York)
 * CR 42 jct.svg County Route 42 (Herkimer County, New York)
 * Livingston County Route 42 NY.svg County Route 42 (Livingston County, New York)
 * CR 42 jct.svg County Route 42 (Madison County, New York)
 * Putnam County Route 42 NY.svg County Route 42 (Putnam County, New York)
 * Rensselaer County Route 42 NY.svg County Route 42 (Rensselaer County, New York)
 * Rockland County Route 42 NY.svg County Route 42 (Rockland County, New York)
 * CR 42 jct.svg County Route 42 (Schoharie County, New York)
 * CR 42 jct.svg County Route 42 (St. Lawrence County, New York)
 * Suffolk County Route 42 NY.svg County Route 42 (Suffolk County, New York)
 * CR 42 jct.svg County Route 42 (Ulster County, New York)
 * Warren County Route 42 NY.svg County Route 42 (Warren County, New York)
 * Washington County Route 42 NY.svg County Route 42 (Washington County, New York)
 * CR 42 jct.svg County Route 42 (Wyoming County, New York)
 * NC 42.svg North Carolina Highway 42
 * ND-42 (2015).svg North Dakota Highway 42
 * OH-42 (1920).svg Ohio State Route 42 (1923-1927) (former)
 * Oklahoma State Highway 42.svg Oklahoma State Highway 42
 * OR 42.svg Oregon Route 42
 * PA-42.svg Pennsylvania Route 42
 * SC-42.svg South Carolina Highway 42 (1920s) (former)
 * SD 42.svg South Dakota Highway 42
 * Secondary Tennessee 42.svg Tennessee State Route 42 (former)
 * Texas 42.svg Texas State Highway 42
 * Old Texas 42.svg Texas State Highway 42 (pre-1939) (former)
 * Texas Loop 42.svg Texas State Highway Loop 42
 * Texas Park Road 42.svg Texas Park Road 42
 * Utah SR 42.svg Utah State Route 42
 * Virginia 42.svg Virginia State Route 42
 * WV-42.svg West Virginia Route 42
 * WIS 42.svg Wisconsin Highway 42


 * Territories
 * Ellipse sign 42.svg Puerto Rico Highway 42
 * Ellipse sign 42.svg U.S. Virgin Islands Highway 42