List of highways numbered 174
The following highways are numbered 174:
Brazil
- BR-174
Canada
- Ottawa Road 174
- Prince Edward Island Route 174
Costa Rica
- National Route 174
Ireland
- R174 road
Japan
- Route 174
United Kingdom
- road
- B174 road
United States
- Interstate 174
- Alabama State Route 174
- California State Route 174
- Connecticut Route 174
- Georgia State Route 174
- Illinois Route 174
- Kentucky Route 174
- Louisiana Highway 174
- Maine State Route 174
- Maryland Route 174
- M-174
- Missouri Route 174
- New Jersey Route 174
- New Mexico State Road 174
- New York State Route 174
- *New York State Route 174X
- Ohio State Route 174
- Pennsylvania Route 174
- South Carolina Highway 174
- Tennessee State Route 174
- Texas State Highway 174
- * Texas State Highway Spur 174
- * Farm to Market Road 174
- Utah State Route 174
- Virginia State Route 174
- Washington State Route 174
- Wisconsin Highway 174
- Wyoming Highway 174