Highway 174 is one of the three major four lane highways in Greater Ottawa (the other ones are Highway 416 and Highway 417). Highway 174 mainly passes through Orleans. Unlike the other major 4-lane highways, there are no exit numbers. It is also the shortest of the 4-Lane Highways, traveling for just 16 kilometres over just 5 exits.
List of interchanges in the Greater Ottawa areaEdit
|Merges with Highway 417|
|Rothwell Heights, Carson Grove||Blair Road|
|Beacon Hill, Beacon Heights||Montreal Road, St. Joseph Boulevard|
|Hiawatha Park||Jeanne d'Arc Boulevard|
|Queenswood Village, also serves Place d'Orleans.||Champlain Street, Place d'Orleans Drive.|
|Fallingbrook||10th Line Road|
Continues as Highway 17 through Cumberland and Rockland.
|Highways in the Greater Ottawa Area|
|4-Lane||Highway 174 | Highway 416 | Highway 417|
|Secondary||Highway 3 | Highway 6 | Highway 7 | Highway 8 | Highway 12 | Highway 15 (Lanark • Woodroffe Avenue) | Highway 16 | Highway 17 (East • West • Embrun) | Highway 31 | Highway 32 | Highway 34 | Highway 36 | Highway 38 | Highway 43 | Highway 44 | Highway 47 | Highway 52 | Highway 73 | Highway 85 | Highway 87|