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Road Improvement
Standards & Specifications
This page provides links to the County Road Standards and Specifications (Ordinance 461) documents.
Note: These are engineered drawings and they require a minimum level of clarity and quality. This minimum quality can not be provided using basic html web pages or with standard gif and jpeg graphic file formats. Acrobat pdf files allow us to provide exact duplicates of our engineered Road Standards. As a result, these documents are provided as pdf files only.
See also: Plan Check Policies and Guidelines
Some documents are in Adobe Acrobat Reader (.PDF) format.
You may download the free software by clicking on the icon below.
Ordinance 461 Complete Package (PDF 19.18Mb) includes Cover, Index, Standards, Specifications & Board Resolution |
12/20/2007 |
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| Road Standards - Standards Only (PDF 16.76Mb) | 12/20/2007 |
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| Specifications - (PDF 1.56Mb) | 12/20/2007 |
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CATEGORY HEADINGS |
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| Expressways | Rural Roads | Water |
| General Plan Highways | Curbs & Driveway | Geometrics |
| Streets/Frontage Roads | Drainage | Monumenting |
| Medians | Sidewalks | Lighting |
| Roadway Design | Alleys | Roadway Landscaping |
| Bridges | Sewers | Traffic |
81 |
8 Lane Expressway, 220' R/W | 12/20/2007 |
82 |
6 Lane Expressway, 220' R/W | 12/20/2007 |
83 |
6 Lane Expressway, 184' R/W | 12/20/2007 |
84 |
6 Lane Expressway, 150' R/W | 012/20/2007 |
85 |
6 Lane Expressway, 142' R/W | 012/20/2007 |
86 |
6 Lane Expressway, 220' R/W | 012/20/2007 |
87 |
8 Lane Expressway, 184' R/W | 012/20/2007 |
General Plan Highways
91 |
Urban Arterial Highway, 152' R/W | 012/20/2007 |
92 |
Arterial Highway, 128' R/W | 012/20/2007 |
93 |
Major Highway, 118' R/W | 012/20/2007 |
94 |
Secondary Highway, 100' R/W | 012/20/2007 |
95 |
Mountain Arterial Highway, 110' R/W | 012/20/2007 |
Streets/Frontage Roads
103 |
Collector Street, (No access) 74' R/W | 012/20/2007 |
104 |
Enhanced Local Street,(School, Park) 66' R/W | 012/20/2007 |
105 |
Local Street, 56' R/W | 012/20/2007 |
106 |
Access Road, 60' R/W | 012/20/2007 |
107 |
Local Frontage Road, 52' R/W | 012/20/2007 |
107A |
Collector Frontage Road, 59' R/W | 012/20/2007 |
108 |
Secondary Frontage Road, 82' R/W | 012/20/2007 |
109 |
Major Frontage Road, 97' R/W | 012/20/2007 |
111 |
Industrial Collector Street, 78' R/W | 012/20/2007 |
112 |
Local Mountain Residential Street, 50' R/W | 012/20/2007 |
Medians
113 |
Landscape Median | 012/20/2007 |
113A |
Crossover Median | 012/20/2007 |
Roadway Design
114 |
Roadway Design Requirements | 012/20/2007 |
Bridges
115 |
Local and Collector Street Bridge | 012/20/2007 |
116 |
Urban Arterial Highway Bridge | 012/20/2007 |
117 |
Arterial Highway Bridge | 012/20/2007 |
118 |
Major and Arterial Highway Bridge | 012/20/2007 |
119 |
Secondary Highway Bridge | 012/20/2007 |
Rural Roads
136 |
Collector Rural Road, 60' R/W | 012/20/2007 |
138 |
Residential Rural Road, 60' R/W | 012/20/2007 |
CURBS & DRIVEWAY
200 |
Type A-6 Curb | 012/20/2007 |
201 |
Type A-8 Curb | 012/20/2007 |
202 |
Type "C" Curb | 012/20/2007 |
203 |
Type "D-1" Curb | 012/20/2007 |
204 |
Type "D" Curb | 012/20/2007 |
205 |
Curb and Gutter Joints | 012/20/2007 |
206 |
Residential Driveway with AC Dikes | 012/20/2007 |
207 |
Residential Driveway with Sidewalk at Curb | 012/20/2007 |
207A |
Commercial Driveway | 012/20/2007 |
208 |
Driveway Locations at Curb Returns | 012/20/2007 |
209 |
Cross Gutter, Layout and Section | 012/20/2007 |
210 |
Cross Gutter with Splash Area | 012/20/2007 |
211 |
Curb Transition | 012/20/2007 |
212 |
Asphalt Concrete Dikes | 012/20/2007 |
213 |
Residential Driveway with Sidewalk at R/W | 012/20/2007 |
DRAINAGE
300 |
Curb Inlet Catch Basin and Specs | 012/20/2007 |
300a |
Fossil Filter | 012/20/2007 |
301 |
Combination Inlet Catch Basin No. 1 | 012/20/2007 |
302 |
Combination Inlet Catch Basin No. 2 | 012/20/2007 |
303 |
Flat Outlet Structure, and Details | 012/20/2007 |
304 |
Curb Support Detail | 012/20/2007 |
305 |
Grate and Frame Detail | 012/20/2007 |
306 |
Asphalt Concrete Overside Drain | 012/20/2007 |
307 |
P.C.C. Dip Section | 012/20/2007 |
308 |
Curb Outlet Drain & Specs | 012/20/2007 |
309 |
Under Sidewalk Drain | 012/20/2007 |
310 |
Private Drain through Curb | 012/20/2007 |
311 |
Gutter Depression for Curb Opening Catch Basin | 012/20/2007 |
312 |
Gutter Depression for Grate Opening Catch Basin | 012/20/2007 |
SIDEWALKS
400 |
Sidewalk, Fire Hydrant, and Utility Pole Location | 012/20/2007 |
401 |
Sidewalk and Curb | 012/20/2007 |
403 |
Curb Ramp | 012/20/2007 |
404 |
Meandering Sidewalk | 012/20/2007 |
405 |
Multi-Purpose DG Trail | 012/20/2007 |
ALLEYS
500 |
Alley and Alley Apron Sections | 012/20/2007 |
SEWERS
600 |
Sewer House Connection | 012/20/2007 |
601 |
Sewer Chimney Pipe | 012/20/2007 |
603 |
Sewer Cleanout | 012/20/2007 |
604 |
Sewer Manhole | 012/20/2007 |
605 |
Deep Sewer Manhole | 012/20/2007 |
606 |
Pre-Cast Concrete Manhole, Eccentric | 012/20/2007 |
607 |
Pre-Cast Concrete Manhole, Concentric | 012/20/2007 |
608 |
Manhole Frames and Covers | 012/20/2007 |
610 |
Precast Rectangular Shallow Manhole | 012/20/2007 |
611 |
Rectangular Manhole Frame and Cover | 012/20/2007 |
612 |
Paving Detail Around Manhole | 012/20/2007 |
WATER
700 |
Water Meter Installation | 012/20/2007 |
701 |
Fire Hydrant Installation | 012/20/2007 |
702 |
Fire Hydrant, Alternate | 012/20/2007 |
703 |
Valve Box, Frame, and Cover | 012/20/2007 |
GEOMETRICS
800 |
Cul-De-Sac | 012/20/2007 |
800A |
Offset Cul-De-Sac | 012/20/2007 |
801 |
Knuckle | 012/20/2007 |
802 |
Frontage Road Intersection | 012/20/2007 |
803 |
Private Road Connection | 012/20/2007 |
805 |
Property Line Corner Cut Back Curb Return Radius | 012/20/2007 |
810 |
Barricade | 012/20/2007 |
812 |
Multiple Mailbox Installation for New Sidewalk | 012/20/2007 |
813 |
Multiple Mailbox Installation for Existing Sidewalk | 012/20/2007 |
814 |
Bus Turnout | 012/20/2007 |
815 |
Street Name Sign (Curb to Curb > 40') | 012/20/2007 |
816 |
Street Name Sign (Curb to Curb <= 40') | 012/20/2007 |
817 |
Underground Utility Locations | 012/20/2007 |
818 |
Utility Trench Backfill | 012/20/2007 |
819 |
Location of Cable TV Ducts at Street Intersection | 012/20/2007 |
820 |
Fixed Object Placement | 012/20/2007 |
821 |
Intersection Sight Distance | 012/20/2007 |
MONUMENTING
900 |
Tie-Out Standards | 012/20/2007 |
901 |
Street Centerline Monument | 012/20/2007 |
903 |
Type "B" Monument | 012/20/2007 |
LIGHTING
1000 |
Residential Lighting | 012/20/2007 |
1001 |
Arterial Highway Lighting | 012/20/2007 |
ROADWAY LANDSCAPING
1101 |
Tree Setbacks at corner Cut-Backs and Driveways | 012/20/2007 |
TRAFFIC
1200 |
IISNS Straight Arm | 012/20/2007 |
1201 |
Detector Loops | 012/20/2007 |
1202 |
Traffic Signal Details | 012/20/2007 |
1203 |
Case "A" Detection Input | 012/20/2007 |
1204 |
Case "B" Detection Input | 012/20/2007 |