County, New York) County Route 18 (Schoharie County, New York) County Route 18 (Schuyler County, New York) County Route 18 (Steuben County, New York) County Route 18 (Suffolk County, New York) County Route 18 (Tioga County, New York) County Route 18 (Washington County, New York) County Route 18 (Westchester County, New York) County Route 18 (Yates County, New York) North Carolina Highway 18 North Dakota Highway 18 Ohio State Route 18 Oklahoma State Highway 18 Oklahoma State Highway 18B Oregon Route 18 Pennsylvania Route 18 South Carolina Highway 18 South Dakota Highway 18 (former) Tennessee State Route 18 Texas State Highway 18 Farm to Market Road 18 Ranch to Market Road 18 (former) Utah State Route 18 Vermont Route 18 Virginia State Route 18 Washington State Route 18 Primary State Highway 18 (Washington) (former) West Virginia Route 18 Wisconsin Highway 18 (former) Territories Guam Highway 18 Puerto Rico Highway 18 See also List of A18 roads List of M18 roads List of highways numbered 18A List of highways numbered 18B List of highways numbered 18C List of highways numbered 18D List of highways numbered 18E List of highways numbered 18F Highway 18, a Golf Channel series similar to The Amazing Race