Construction Standards
The construction standards and notes listed below were approved by the director of Transportation & Public Works and adopted on July 9th 2020 by the County of Sonoma Board of Supervisors per County Ordinance 38-2020-0446 ‘Adoption of an Ordinance to Amend References to Applicable Design and Construction Standards’.
Roadway
- 100 - Recommended Abbreviations, Lines, Symbols
- 214 - Edge Grind Detail Transverse Conform Typical Section
- 216 - Bus Stop Turnout Typical Section (Urban)
- 218 - Survey Monument
- 218A - Survey Monument Cover Replacement
- 219A - Pavement Cut Policy
- 219B - Trench Backfill and Paving Details
- 219C - Pavement Cut Policy Intersections
- 219D - Bell Hole Policy
- 219E - Exception to Standard Details
- Standard Improvement Plan Construction Notes
Utility Companies: See Guidelines for Utility Cuts on County Roads
Sidewalk
- 220 - Curb, Gutter and Sidewalk
- 222 - Weakened Planes, Score Marks and Expansion Joints
- 223 - Curb, Gutter and Sidewalk Expansion Joint, New to Exist
- 224 - Pedestrian Ramps, Location Overview
- 224A - Curb Ramp Exceptions and Supplemental Requirements to State Standard Plans A88A and A88B
- 224B - Curb Ramp, General Notes
- 226 - Typical Sidewalk Obstruction Transition
- 228 - Asphalt Concrete Walkway
- 229 - Sidewalk Barricade
Fencing
Mail & Newspaper Boxes
- 302 - Mailbox Assembly (Single)
- 303 - Mailbox Assembly (Double)
- 304 - Mailbox Support Hardware, Series A
- 305 - VLOC Single and Multiple Mailbox Assemblies
- 306 - Mailbox Installation with Wooden Post
Drainage
- 400 - Temporary Field Drain
- 402 - Storm Drain Outlet Rock Slope Protection
- 404 - Sidewalk Drain Detail
- 406 - Valley Gutter Type Cross Gutter
- 409 - Concrete Cap (Driveway Culvert)
- 410 - Concrete Collar, Storm Drain
Street Lights
- 600 - Pull Box Installation, No. 5 Pull Box
- 602 - Pull Box Installation, No 5 (T) Pull Box
- 605 - Led Street Light Schematic Wiring Diagram
- 606 - Electric Service Detail, Underground Service
- 608 - Electric Service Detail, Overhead Service
- 610 - Street Lights, Arterial Streets
- 612 - Street Lights, Collector Streets
- 614 - Street Lights, Local Streets
- 616 - Concrete Footing Detail, Standard Street Light Pole
- 618 - Base Detail, Standard Street Light Pole
- 620 - Street Light Base Leveling Detail
- 622 - Street Lights, Lateral Light Distribution
- 630 - Traffic Signal Loop Detector Replacement
- Street Lighting Requirements Notes and Legend
Traffic Signing
- 700 - Street Name Sign, Metal Pole Mounting
- 702 - Street Name Sign, Wood Post Mounting
- 704 - Advance Street Name Sign
- 706 - Street Name Signs, Mast Arm Mounted Brace Detail
- 708 - Barricade Placement for R1 Sign Installation in Painted Island
- 710 - Special Event Signing
- 712 - Sign Location and Installation Details
- 712A - Sign Foundations Details
- 714A - Temporary Wooden Barricade
- 714B - Pavement Transition Barricade
- 714C - Pavement Transition Barricade Details
- 714D - Barricades, General Notes
- Specifications about Signing, Striping and Marking
Driveways
- 804 - Driveway Details for Utility Trenching
- 806 - Urban Driveway, Heavy Use, Commercial
- 808 - Urban Driveway, Light Use, Commercial and Residential
- 812 - Rural County Road, Driveway and Private Road Intersections
- 815 - Rural Driveway / Roadway
- 816 - Rural Driveway Drainage, Ditches
- 818 - Rural Driveway Drainage, Valley Gutters
- 820 - Rural Driveway Drainage, Culverts
Translate