The following highways are numbered 42. International Asian Highway 42 European route E42 Australia National Route 42 - part of Cunningham Highway Canada Alberta Alberta Highway 42 Manitoba Manitoba Highway 42 Winnipeg Route 42 Ontario Chatham-Kent Road 42 Elgin County Road 42 County Road 42 (Essex County, Ontario) Greater Sudbury Road 42 Halton Regional Road 42 Leeds and Grenville County Road 42 (former 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 Wellington County Road 42 Saskatchewan Saskatchewan Highway 42 China G42 Expressway Hungary Main road 42 (Hungary) India National Highway 42 (India) Israel Highway 42 (Israel) Japan Japan National Route 42 Hanwa Expressway Kisei Expressway Korea, South National Route 42 Poland National Road 42 (Poland) United Kingdom English A42 (Appleby Magna-Kegworth) Northern Ireland A42 (Maghera-Carnlough) British M42 (Appleby Magna-Bromsgrove) United States Interstate 42 (proposed) U.S. Route 42 Alabama State Route 42 (former) Arkansas Highway 42 California State Route 42 (former) County Route J42 (California) Colorado State Highway 42 Connecticut Route 42 Delaware Route 42 Florida State Road 42 (former) County Road 42 (Lake County, Florida) County Road 42 (Marion County, Florida) Georgia State Route 42 Georgia State Route 42A (former) Illinois Route 42 (former) Illinois Route 42A (former) Indiana State Road 42 Iowa Highway 42 (former) K-42 (Kansas highway) Louisiana Highway 42 Louisiana State Route 42 (former) Maryland Route 42 Maryland Route 42A M-42 (Michigan highway) Minnesota State Highway 42 County Road 42 (Dakota County, Minnesota) County Road 42 (Ramsey County, Minnesota) County Road 42 (Scott County, Minnesota) Mississippi Highway 42 Missouri Route 42 Montana Highway 42 Nebraska Highway 42 (former) Nebraska Spur 42A Nevada State Route 42 (former) New Jersey Route 42 County Route 42 (Bergen County, New Jersey) County Route 42 (Monmouth County, New Jersey) New Mexico State Road 42 New York State Route 42 County Route 42 (Allegany County, New York) County Route 42 (Cattaraugus County, New York) County Route 42B (Cayuga County, New York) County Route 42 (Chautauqua County, New York) County Route 42 (Chenango County, New York) County Route 42 (Dutchess County, New York) County Route 42 (Erie County, New York) County Route 42 (Genesee County, New York) County Route 42 (Herkimer County, New York) County Route 42 (Livingston County, New York) County Route 42 (Madison County, New York) County Route 42 (Putnam County,