List of highways numbered 315 explained
The following highways are numbered 315:
Canada
China
Costa Rica
India
Japan
United States
- Interstate 315 (unsigned)
- Arkansas Highway 315
- Connecticut Route 315
- Florida State Road 315 (former)
- Georgia State Route 315
- Iowa Highway 315 (former)
- Kentucky Route 315
- Louisiana Highway 315
- Maryland Route 315
- Maryland Route 315 (former)
- Mississippi Highway 315
- Montana Secondary Highway 315
- New Mexico State Road 315
- New York:
- New York State Route 315
- County Route 315 (Erie County, New York)
- Ohio State Route 315
- Ohio State Route 315C (unsigned)
- Pennsylvania Route 315
- South Carolina Highway 315
- Tennessee State Route 315
- Texas:
- Texas State Highway 315
- Farm to Market Road 315
- Utah State Route 315
- Vermont Route 315
- Virginia State Route 315
- Wyoming Highway 315
Other areas:
- Puerto Rico Highway 315
- U.S. Virgin Islands Highway 315
