Road Design and Construction Standards
The Road Design and Construction Standards establish the technical engineering design and construction requirements for public road and bridge improvements under our jurisdiction. They are intended to:
- Provide a safe and reliable transportation system
- Preserve, protect and improve County infrastructure
- Ensure the long-term viability of the transportation system
- Avoid unneeded maintenance and replacement costs.
These regulatory documents help create communities where transportation needs and livability are well balanced.
Comments/Suggestions?
Submit comments and suggestions regarding the Road Design and Construction Standards using the form at the bottom of this page.
Document Downloads |
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| DOCUMENT | EFFECTIVE DATE | DESCRIPTION |
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3/18/2011 |
PDF, 826KB, Ordinance 738 Text with Exhibits excluding Appendices and Details |
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PDF, 9KB, Updated June 15, 2011 |
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11/21/2012 |
PDF, Arterial Roads Map of Eastern Washington Co. |
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11/21/2012 |
PDF, Arterial Roads Map of All Washington Co. |
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11/21/2012 |
PDF, Collector Roads Map of Eastern Washington Co. |
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11/21/2012 |
PDF, Collector Roads Map of All Washington Co. |
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12/14/2018 |
PDF, Road Eng. Plan Submittal/Review Checklist |
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5/7/2020 |
PDF, Road Design Exception Form |
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11/21/2012 |
PDF, Road Right-Of-Way Plant List |
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11/21/2012 |
PDF, Approval Process for New Pedestrian Crossings at Mid-Block Intersections |
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10/30/2017 |
PDF, Crosswalk Accessibility Requirements and Closure Process |
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4/29/2020 |
PDF, Facility Permit Submittal Requirements |
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7/24/2019 |
PDF, Revised Pedestrian Crossing Analysis for Local and Neighborhood Routes |
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| Memorandum | 4/8/2021 |
PDF, Sight Distance Guidelines |
| 1/5/2021 | PDF, Terminus Guidance for Public Roads | |
| Memorandum | 9/22/2021 |
PDF, Channelized Right Turn Lanes on County Roadways |
ADA Ramp Inspection Forms |
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DOCUMENT |
EFFECTIVE DATE | DESCRIPTION |
| Inspection form 7010 | 9/16/2020 |
Perpendicular ramps |
| Inspection form 7020 | 4/29/2020 |
Parallel ramps |
| 4/29/2020 | Combination ramps | |
| 4/29/2020 | Blended-transition ramps | |
| 4/29/2020 | Cut-through ramps | |
| 9/16/2020 | End-of-walk ramps | |
| 4/29/2020 | Unique ramps | |
| 9/16/2020 | ADA Push Buttons (Turn spaces and paved shoulders) | |
| 9/16/2020 | ADA Push Buttons (Ramp runs and back-in maneuvers) | |
Standard Details Single Downloads |
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DESCRIPTION |
EFFECTIVE DATE |
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DWG |
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1000 - DRIVEWAYS |
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| 1010 - Driveway Pavement Section |
8/1/2018 |
1010.pdf | 1010.dwg |
| 1020 - Residential Driveway (with Planter Strip) |
9/1/2019 |
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| 1030 - Residential Driveway (Curbtight Sidewalk) |
9/1/2019 |
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| 1040 - Commercial Driveway (with Planter Strip) |
8/1/2018 |
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| 1050 - Commercial Driveway (Curbtight Sidewalk) |
9/1/2019 |
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| 1070 - Private Road Entrance Off Of Public Roads With Curbs |
8/1/2018 |
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| 1080 - Driveway for Uncurbed Roads, Plan and Profile |
8/1/2018 |
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| 1081 - Driveway for Uncurbed Roads, Cross-Section and Profiles |
8/1/2018 |
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| 1082 - Culvert Tables |
3/31/2016 |
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| 1090 - Access Along Unimproved Frontage |
3/18/2011 |
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2000 - CURBS AND SIDEWALKS |
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| 2010 - Standard Curb And Gutter |
9/1/2019 |
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| 2030 - Vertical Curb And Gutter Non-Mountable |
9/1/2019 |
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| 2040 - Curb Type Transition Detail |
7/01/2016 |
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| 2050 - Catch Basin Pavement Tapers |
3/18/2011 |
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| 2110 - P.C. Concrete Sidewalk Detail |
9/1/2019 |
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| 2111 - Monolithic Sidewalk With Wall Detail |
8/1/2018 | 2111.pdf | 2111.dwg |
| 2120 - Typical Sidewalk Obstruction Swing-Away Apron |
3/18/2011 |
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| 2130 - Sidewalk Curb Ramp At Curb Return |
8/1/2018 |
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| 2140 - End of Sidewalk Transition Detail |
9/1/2019 |
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| 2150 - Pedestrian Path Or Bikeway |
9/1/2019 |
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| 2210 - Standard Cul-De-Sac |
8/1/2018 |
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| 2220 - Eyebrow - Corner |
3/08/2011 |
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| 2230 - Curb Extension |
3/08/2011 |
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| 2300 - Traffic Separator |
9/1/2019 |
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| 2310 - Pedestrian Island Crossing |
8/1/2018 |
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| 2315 - Raised Median Nose Treatment |
9/1/2019 |
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3000 - GENERAL |
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| 3010 - Centerline Survey Monument Detail |
7/01/2017 |
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| 3020 - Pipe Bedding And Backfill Details |
1/01/2017 |
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| 3030 - Offset Crown |
3/18/2011 |
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| 3040 - Utility Location |
3/18/2011 |
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| 3050 - Local Road Utility Easement |
3/18/2011 |
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| 3060 - Mailbox Installation Plan |
1/01/2017 |
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| 3070 - Vehicle Barrier Post |
3/18/2011 |
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4000 - LANDSCAPE |
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| 4010 - Root Barrier Detail |
3/18/2011 |
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5000 - DRAINAGE |
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| 5010 - Subsurface Drain Detail |
3/18/2011 |
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| 5020 - Subgrade And Spring Catchment Detail |
3/18/2011 |
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| 5030 - Rain Garden |
3/18/2011 |
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| 5031 - Rain Garden Details |
3/18/2011 |
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6000 - TRAFFIC |
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| 6010 - Street Barricade Type III, Steel Posts End Of Road |
9/1/2019 |
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| 6020 - Street Barricade Type III, Steel Posts Right Of Traffic |
9/1/2019 |
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| 6030 - Sidewalk Barricade Type III, Steel Posts |
9/1/2019 |
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6035 - Fire Access Detail |
9/1/2019 | 6035.pdf | 6035.dwg |
| 6040 - Tubular Marker |
9/1/2019 |
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| 6050 - Sign Post Installation In P.C. Concrete Or Asphalt |
9/1/2019 |
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| 6051 - Sign Post Installation, Sidewalk Surface Mount, Square |
8/1/2018 |
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| 6060 - Speed Cushion, Road 26' Wide Or Less, Speed Greater Than 25 MPH |
9/1/2019 |
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| 6061 - Speed Cushion, Road Width Greater Than 26', Speed Greater Than 25 MPH |
9/1/2019 |
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| 6062 - Speed Cushion, Road 26' Wide Or Less, Speed 25 MPH Or Less |
9/1/2019 |
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| 6063 - Speed Cushion, Road Width Greater Than 26', Speed 25 MPH Or Less |
9/1/2019 |
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| 6110 - Striping Legend |
9/1/2019 |
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| 6510 - Permanent Signing Legend |
8/1/2018 |
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| 6511 - Street Name Signs | 7/01/2017 | 6511.pdf | 6511.dwg |
| 6512 - No Parking And Speed Signs | 3/13/2014 | 6512.pdf | 6512.dwg |
| 6520 - Future Development Sign |
3/18/2011 |
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| 6521 - Private Road Sign |
3/18/2011 |
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| 6522 - Next Signal Sign (Stand-Alone) | 8/1/2018 | 6522.pdf | 6522.dwg |
| 6597 - Geogrid Location Sign | 9/1/2019 | 6597.pdf | 6597.dwg |
| 6598 - Culvert Number Sign | 8/12/2015 | 6598.pdf | 6598.dwg |
| 6599 - Bridge Number Sign |
3/18/2011 |
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| 6800 - Solar Vehicle Speed Sign Pedestal | 8/1/2018 | 6800.pdf | 6800.dwg |
| 6810 - Luminaire Supports-Davit Style 25', 30' and 35' Mounting Heights |
9/1/2019 |
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6820 –Typical Foundation For Luminaire Supports |
9/1/2019 |
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6830 –Typical Luminaire Details |
9/1/2019 | 6830.pdf | 6830.dwg |
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6831 –Illumination Junction Box Details |
9/1/2019 | 6831.pdf | 6831.dwg |
| 6911 - Traffic Signal Supports
Notes And Design Criteria |
6/16/2014 | 6911.pdf | 6911.dwg |
| 6912 - Traffic Signal Supports
General Details |
4/11/2016 | 6912.pdf | 6912.dwg |
| 6913 - Traffic Signal Supports
Steel Details |
6/16/2014 | 6913.pdf | 6913.dwg |
| 6921 - Traffic Signal Supports
Foundation Standard (Square) |
9/1/2019 | 6921.pdf | 6921.dwg |
| 6922 - Traffic Signal Supports
Foundation Standard (Round) |
9/1/2019 | 6922.pdf | 6922.dwg |
The following files are for the production of project plan sets associated with Washington County projects only. (Click link to download ZIP files):
| Washco Plan Title Sheet | CAD files for use as templates in production of plan sets |
| Washco Plan Borders | CAD files for use as borders in production of plan sets |
| Washco Utility Line Styles | CAD and LIN files for use in existing utility drawings |
