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County Standard Plans
These standard plans are printable and viewable by using Adobe Acrobat Reader.
You can get a free copy of Adobe Acrobate Reader.

standa3.jpg   

Standard Plan booklets are also available from our receptionists.  Booklets are $6.50 each.  Mail orders are an additional $5 shipping and handling. Make checks payable to Contra Costa County. 

If you have any questions, please call the receptionists at (925) 313-2000. You can download a complete copy of the Standard Plans. (file may take awhile to download) 

Table of Contents
                                            Latest Update March 27, 2008

General Road Work - Miscellaneous
CA1i    Standard Drafting Symbols - Updated 11/27/2002
CA10i  Required Clearance at Intersections - Updated 6/12/2007
CA20i  Driveway Design Standards - Updated 10/26/2006
CA30i  Street Barricade - Updated 6/12/2007
CA40i  Street Survey Monument - Updated 3/7/2006
CA50i  Typical Road Sections for Subdivisions & Road Acceptance - Updated 12/11/2002
CA51i  Typical Asphalt Conform Details for Overlay - Updated 2/28/2002
CA52i  Modified Case "B" Curb Ramp - Updated 10/2/2007
CA53i  Two Lane Rural Road Guidelines - Updated 2/28/2002
CA70i  Standard Sidewalk Details - Updated 6/12/2007
CA71i  Median, Curb and AC Dike Details - Updated 11/27/2002
CA72i  Driveway Ramp Details - Updated 11/27/2002
CA73i  Concrete Valley Gutter and Concrete Lined Ditch Details - Updated 11/2/2002
CA74i  Doweling Details for Curb and Sidewalk - Updated 2/28/2002
CA90i  Mailbox Details - Updated 2/28/2002

General Construction
CB10i  Temporary Timber Retaining Wall - Updated 2/28/2002

General Drainage - Road
CD01i  Storm Drain Trench Detail - Updated 12/11/2002
CD03i  Silt Fence and Hay Bale Sediment Control Details - Updated 2/28/2002
CD04i  Back of Curb Flow Diverter - Updated 11/27/2002
CD05i  Gutter Flow - for Standard Street Section - Updated 2/28/2007
CD06i  Sidewalk Cross Drain & Residential Sidewalk Drain - Updated 10/26/2006
CD07i  Storm Drain Utility Crossing at or Below Pipe Soffit - Updated 11/27/2002
CD08i  Edge Drain Details - Updated 6/12/2007
CD11i  Inlet Frame and Grate - Updated 2/28/2002
CD12i  Maintenance Access Opening - Updated 2/28/2002
CD16i  Standard Manhole on Type C Inlet Base - Updated 11/27/2002
CD20i  Type A Inlet - Updated 3/27/2008
CD21i  Type B Inlet - Updated 3/27/2008
CD22i  Type C Inlet - Updated 3/27/2008
CD23i  Type D Inlet - Updated 3/27/2008
CD24i  Type E Inlet - Updated 3/27/2008
CD25i  Type F Inlet - Updated 3/27/2008
CD26i  Type F Inlet Details - Updated 10/26/2006
CD30i  Pre-cast Manhole and Type I Base - Updated 11/27/2002
CD31i  Type II Manhole Base - Updated 11/27/2002
CD32i  Type III Manhole Base 36 - Updated 11/27/2002
CD33i  Type IV Manhole Base - Updated 11/27/2002 
CD34i  Type V Manhole Base - Updated 10/26/2006

General Drainage - Flood Control Channels
CD40i  Rock Slope Protection - Updated 11/21/2006
CD50i  Rock Pipe Outfall - Updated 1/28/2008
CD52i  Type M Headwall - Updated 2/28/2002
CD60i  Concrete V Ditch - Updated 2/28/2002
CD61i  Concrete Ditch Details - Updated 2/28/2002

General Landscaping - Flood Control Channels
CH10i  Mitigation Landscaping Details - Updated 11/27/2002
CH80i  Typical Landscaping Limits on Creek Embankments - Updated 2/28/2002

Signing and Striping
CRS1i  Signing & Striping Standards - Updated 6/12/2007

Utilities
CU01i  Utility Trench Cut Details - Updated 11/27/2002
CU60i  Standard Utility Locations - Updated 2/28/2002