Road names will be assigned in accordance with the guidelines established herein as follows:
1. Road Naming System - East/West Roads. The majority of roads in unincorporated Story County generally run along section lines. Roads running in an east and west direction are to be given a numeric designation beginning with 100th Street on the northernmost section line and road across the County. The southernmost road in Story County will be given a designation of 340th Street. East/west roads that do not run on the section line will be assigned to a numeric designation that falls between the designation assigned to adjoining northern and southern section line roads. An example of the name of an east/west road, which is located 1.5 miles south of the Hamilton and Hardin County line, is 115th Street.
2. Road Naming System - North/South Roads. Roads running in a north and south direction are to be given a numeric designation beginning with 500th Avenue on the western section line road in the County. The easternmost road in the County is to have a designation of 740th Avenue. North/south roads that do not run on a section line are to be assigned a numeric designation that falls between the designation assigned to the adjoining western and eastern section line roads. An example of the name of a north/south road, which is located 1.5 miles east of the Boone County line, is 515th Avenue.
3. Road Naming System Exceptions - Straight Line Roads. Exceptions may be made for State and Federal Highways and other roads of historical significance that travel in a generally straight line. When an exception to the rule is made, the numeric designation that would normally be assigned to the road would not be used, and the normal progression continued.
A. Straight line east/west road exceptions include, but are not limited to:
State Highway 210
Lincoln Highway
U.S. Highway 30
B. Straight line north/south road exceptions include, but are not limited to:
George W. Carver Avenue
Interstate Highway 35
U.S. Highway 65
U.S. Highway 69
4. Road Naming System Exceptions - Diagonal or Irregular. The vast majority of the road network in Story County runs along or adjacent to a section line; however, there are a few roads that run diagonally or in an irregular manner, or run in a straight line for a short distance, but do not run on a section line. In the case of diagonal, irregular roads, or straight line roads not on a section line, existing recorded names will be used. If none exists, common place road names, or names accepted by petition signed by 75 percent of the owners of the land along the roadway will be used. If no recorded name exists, or no petition is presented, a determination will be made as to whether the road is generally an east/west or north/south road. Once this determination is made, the road will be designated as if it were a straight line road.