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Environmental & Resource Protection
Residential Driveway Requirements

 

Width
Driveway:
Roadway:
12'
18’, or 12’ with turnouts every 500 feet.
 
Surfacing
0-5% grades:
5-15% grades:
15-20% grades:
5" of Class II Baserock
5" baserock plus oil and screening
5" of concrete or 6" baserock plus 1.5" of asphalt
 
Grades
Maximum Grade:
Other:
20%
Grades cannot exceed 15% for more than 200’ at a time. This includes vertical curves.

Maximum grade may increase to 25% when the furthest point of the house is no more than 150’ from the driveway’s intersection with the main road.
 
Other Requirements
Centerline Radius:
Turnarounds:
35’ minimum
Check with your fire agency.