County Road Standards and County Standard Specifications
New County road standards and specifications became effective March 2, 2023 through the adoption of County Ordinance No. 461.11 by the Riverside County Board of Supervisors. These standards replaced the previous County Ordinance No. 461.10 road standards adopted in 2007. A summary of the updates is available below.
ORDINANCE No. 461.11 County Road Standards and County Standard Specifications Cover, County Road Standards, County Standard Specifications, and Adopted Ordinance formatted for printing (25 MB PDF) effective 3/2/2023
County Road Standards – Road Standards Only (20 MB PDF) effective 3/2/2023
County Standard Specifications - Specifications Only (<1 MB PDF) effective 3/2/2023
Summary of Updates between ORD 461.10 (2007) and ORD 461.11 (2023) (<1 MB PDF)
See also: Plan Check Policies and Guidelines
To accommodate persons with disabilities, information is available in alternate formats upon request.
Image
Update Regarding the Use of RAP (Reclaimed Asphalt Pavement)
To ensure compliance with state requirements for incorporating recycled materials in roadway construction per AB 2953 (Use of Recycled Materials), Section 11 of Ordinance No. 461 County Standard Specifications is updated effective immediately by the County memorandum, “Updated Specifications Using RAP in HMA,” dated September 25, 2025.
Additional Information
INDEX
ABBREVIATIONS
EXPRESSWAYS
GENERAL PLAN HIGHWAYS
STREETS / FRONTAGE ROADS
103 COLLECTOR STREET (NO ACCESS), 74' R/W
104 ENHANCED LOCAL STREET, 66' R/W
105A EXTERIOR & LOCAL STREET, 60' R/W
105B SHORT LOCAL STREET, 56' R/W
105C AB LOCAL ROAD/ AB ACCESS RD, 60' R/W106 ACCESS ROAD, CONSTRAINED LOCAL OR PRIVATE STREET, 50'-60' R/W
107 LOCAL FRONTAGE ROAD, 52' R/W
107A COLLECTOR FRONTAGE ROAD, 59' R/W
108 SECONDARY FRONTAGE ROAD, 82' R/W
109 MAJOR FRONTAGE ROAD, 97' R/W
111 INDUSTRIAL COLLECTOR STREET, 78' R/W
112 LOCAL MOUNTAIN RESIDENTIAL STREET, 50' R/W
MEDIANS
ROADWAY DESIGN
BRIDGES
RURAL ROADS
CURBS, GUTTERS AND DRIVEWAYS
200 TYPE A-6 CURB AND GUTTER - 6" CURB FACE
201 TYPE A-8 CURB AND GUTTER - 8" CURB FACE
202 TYPE "C" CURB - ROLLED CURB
202A TYPE "W CURB - WEDGE CURB
203 TYPE "D-1" CURB ONLY ON EXISTING PAVEMENT
204 TYPE "D" CURB ONLY
205 CURB AND GUTTER JOINTS
206 RESIDENTIAL DRIVE APPROACH WITH HMA DIKE
207 RESIDENTIAL DRIVE APPROACH WITH SIDEWALK AT CURB
207A COMMERCIAL DRIVE APPROACH
208 DRIVE APPROACH LOCATIONS AT INTERSECTION CURB RETURNS
209 CROSS GUTTER AND SPANDREL
210 CROSS GUTTER AND SPANDREL WITH SPLASH AREA
211 CURB TRANSITION
212 HOT MIX ASPHALT DIKES
213 RESIDENTIAL DRIVE APPROACH WITH SIDEWALK AT R/W
214 SAFETY EDGE
DRAINAGE
300 CURB INLET CATCH BASIN
300A FOSSIL FILTER
301 COMBINATION INLET CATCH BASIN No. 1
302 COMBINATION INLET CATCH BASIN No. 2
303 FLAT OUTLET DRAINAGE STRUCTURE
304 CURB SUPPORT DETAIL
305 GRATE AND FRAME DETAIL
306 HOT MIX ASPHALT OVERSIDE DRAIN
307 PCC DIP SECTION
308 CURB OUTLET DRAIN
309 UNDER SIDEWALK DRAIN CAST IN PLACE
310 PRIVATE DRAIN THROUGH CURB
311 GUTTER DEPRESSION FOR CURB OPENING CATCH BASINS
312 GUTTER DEPRESSION FOR GRATE OPENING CATCH BASINS
313 FULL TRASH CAPTURE DEVICE - CONNECTOR PIPE SCREEN
314 RIPRAP ENERGY DISSIPATER
SIDEWALKS AND TRAILS
ALLEYS
SEWERS
600 SEWER HOUSE CONNECTION
601 SEWER CHIMNEY PIPE
603 SEWER CLEANOUT
606 PRE-CAST CONCRETE MANHOLE, ECCENTRIC
607 PRE-CAST CONCRETE MANHOLE, CONCENTRIC
608 MANHOLE FRAMES AND COVERS
610 PRECAST RECTANGULAR SHALLOW MANHOLE
611 RECTANGULAR MANHOLE FRAME AND COVER
612 PAVING DETAIL AROUND MANHOLE IN UNPAVED AREA
WATER
GEOMETRICS
800 CUL-DE-SAC
800A OFFSET CUL-DE-SAC
801 KNUCKLE
802 FRONTAGE ROAD INTERSECTION
803 PRIVATE ROAD CONNECTION (RURAL AREA)
805 PROPERTY LINE CORNER CUT BACK, CURB RETURN RADIUS
806 ENTRY STREET 50' IMP/80' R/W
810 BARRICADE
812 MULTIPLE MAILBOX INSTALLATION FOR NEW SIDEWALK
813 MULTIPLE MAILBOX INSTALLATION FOR EXISTING SIDEWALK
814 BUS TURNOUT
817 UNDERGROUND UTILITY LOCATIONS
818 UTILITY TRENCH BACKFILL
819 LOCATION OF CABLE TV DUCTS AT STREET INTERSECTIONS
820 FIXED OBJECT PLACEMENT FOR ROADWAYS WITHOUT CURBS
821 INTERSECTION SIGHT DISTANCE
MONUMENTING
LIGHTING
ROADWAY LANDSCAPING
TRAFFIC
1200 llSNS MAST ARM DETAIL
1201 llSNS DETAIL
1202 TRAFFIC SIGNAL DETAIL
1205 VIDEO/RADAR DETECTION DETAIL
1206 LOOP DETECTOR DETAIL
1207 DETECTION INPUT ASSIGNMENTS
1210 STRIPING DETAILS AND CONSTRUCTION NOTES
1211 CROSSWALK AND LIMIT LINE LAYOUT DETAIL
1215 SOLAR POWERED FLASHING BEACON
1216 SOLAR POWERED RADAR SPEED FEEDBACK SIGN - LOCAL ROAD
1217 SOLAR POWERED RADAR SPEED FEEDBACK SIGN - HIGHWAY
1220 STREET NAME SIGN (CURB TO CURB WIDTH GREATER THAN 60’)
1221 STREET NAME SIGN (CURB TO CURB WIDTH LESS THAN OR EQUAL TO 60')
1222 SIGN POST INSTALLATION
1223 NO PARKING SIGN RV'S / TRAILERS
1225 ADVANCE STREET NAME SIGN