The Comprehensive Arterial Road Network Plan (CARNP) adopted by the Board of County Commissioners on January 7, 1999 reduces the number of driveways or streets that may be constructed along arterial roads (generally section line roads). In November 2000 these driveway limitations were incorporated into the county zoning and subdivision regulations. Driveways on residential streets inside subdivisions are not part of the CARNP, and different guidelines apply.

One focus of CARNP was to provide a safe roadway system and protect traffic capacity in order to minimize future construction costs. The number of driveways affects traffic safety, traffic capacity, and maintenance costs. CARNP addressed this issue by providing reasonable driveway restrictions along arterial roads. The number of driveways will be limited by driveway spacing requirements related to road frontage. The table below indicates the maximum number of driveways that your property may have based on the road frontage. Sight distance, drainage and other factors may reduce the available driveway locations. Also, there may be deed restrictions, or restrictions on the subdivision plat which may limit driveway numbers and locations.

Please keep in mind that you may want to split your property at a later date. If all available driveways are used on one portion of your property, the new owner may not be eligible for a driveway on the new tract unless you remove an existing driveway. Shared driveways are also an option in areas where there is not sufficient frontage.

 
Section Line and Other Arterial Roads
Required Road Frontage
Roadway Type     No Driveway*      1 Driveways          2 Driveways
Type 1              Less than 400          400-799                800-1200
Type II              Less than 660           660-1319            1320-1979
Type III             Less than 1000        1000-1999            2000-2999

Corner lots with less than required frontage are restricted to access on the side road. Driveway corner clearance at the intersection of two arterial roads is 600 ft.

*Existing tracts with less than the required frontage for one driveway may be eligible for one driveway if it is a tract of record prior to November 2000. Building permits are based on creation of tracts since 1982, so it may be possible to get a driveway to a vacant lot, and still not be able to obtain a building permit. Check with the Planning Department to see if a building permit can be obtained on a tract.