DRIVEWAYS & ENTRANCE PERMITS
1. For County blacktops and gravel roads see instructions below.
2. For Highway 9 or 69 contact:
Iowa DOT District 2 – Use of Right of Way Permits
O: 641-423-8516 or 866-452-8502
523 S. Illinois Ave.
Mason City, IA 50401
Property Owner Responsibilities
1. Construct and maintain entrances , from the road to the right-of-way line (typically top of the back slope of the ditch, or in line with power poles).
2. Obtain permit from the County Engineer prior to constructing new or modifying existing entrances.
3. All entrance construction costs including new culverts.
1. Review entrance culvert permits for spacing, safety, and specifications.
2. Maintain entrance culverts once installed (except bridges and box culverts)
3. Oversee construction to ensure compliance with county policies.
Permit applications may be obtained at the office of the County Engineer. Application must be completed by the applicant and submitted to the Engineer’s Office not less than seven (7) days prior to desired application approval.
1. Culvert Size – Minimum 15 inch diameter, size and length to be determined by the County Engineer
2. Culvert Material – NEW concrete, corrugated metal, or dual wall plastic
3. Entrance Width – Minimum 24 feet, Maximum 45 feet.
4. Side Slopes – 2:1 on gravel roads, 6:1 on paved roads
5. NO ROCKS may be buried in the entrance.
6. Other requirements as specified by County Policy.
1. Safety shall be primary criteria for locating accesses.
2. Minimum Spacing – 1000 feet, 400 feet for residences, 600 feet for commercial.
3. Other requirements as specified by County Policy.
Contact the County Engineer’s Office at 641.585.2905 for further assistance.