940.13 Driveway Spacing

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940.13 Driveway Spacing.jpg

This guideline describes the recommended spacing between private driveways necessary to preserve both safety and traffic flow. Spacing between driveways must be longer on higher speed routes in rural areas than in urban areas. In urban areas, these guidelines allow for about one driveway per city block face on non freeway- major roadways and two driveways per block face on minor roadways.

In order to preserve spacing, move direct access to local streets (not arterials) where possible. In particular, access for corner lots is to be moved to a lower traffic side street whenever possible. Access can often be better accomplished on major streets through such means as frontage and backage roads, joint access, cross access and shared driveways. This guideline only applies where sight distance allows. Driveways are not allowed where sight distance is inadequate even if the driveway spacing guideline would allow them.

Provide driveway accesses on local and collector streets (side streets) rather than arterials wherever possible. Line up driveways across the public roadway from each other whenever possible. When driveways are not lined up, the spacing is to be measured from the closest driveway on either side of the road, except where a non-traversable (e.g., raised) median exists.

On urban routes where non-traversable medians exist, shorter driveway spacing may be acceptable for right-in, right-out driveways only.

Driveway Spacing
Driveway Spacing with Offset Drives
Table 940.13 Minimum Guidelines
Roadway Classification In Current and Projected Urban Areas In Rural Areas
Major, Freeway No driveways No driveways
Major, Non-Freeway 440 to 660 ft. 660 to 1,320 ft. *
Minor 220 to 330 ft. 330 to 440 ft. *
* The urban guideline may be applied in developed areas that are not urban, for example, cities with populations under 5,000. On collectors in cities with population under 5,000, the guideline is 220 ft. (same as the urban guideline).