170.23 RIGHT-OF-WAY WIDTHS AND EASEMENTS.
Minimum right-of-way widths of streets, alleys, and easements for utilities shall be:
1.   Primary thoroughfares (as designated on the transportation plan), no less than 80 feet wide in any case.
2.   Secondary thoroughfares, (as designated on the transportation plan), no less than 60 feet wide in any case.
3.   Collector or local streets; minor streets and cul-de-sacs, 50 feet wide.
4.   All dead-end streets shall terminate in a circular turnaround having a minimum right-of-way diameter of 120 feet. Illustrations of the methods of street termination are on file for public use in the office of the Clerk.
5.   Alleys and service drives, 16 feet wide.
6.   Easements for utilities, where required, should be at least 10 feet wide, centered on rear or side lot lines.