Road Design and Construction Standards
The Washington County Board of Commissioners adopted the Road Design and Construction Standards (Ordinance 738) on February 15, 2011, which became effective on March 18, 2011. These standards replace the
- provide a safe and reliable multi-modal transportation system;
- preserve, protect, and improve the public transportation infrastructure;
- ensure the long-term viability of the transportation system; and
- avoid unnecessary and excessive maintenance and replacement costs.
The road standards specify the technical requirements for the design and construction of public roadways. The Washington County 2020 Transportation Plan, Community Plans and Community Development Code provide guidance in the development of the communities through which the roadways pass. In concert, all of these regulatory documents are intended to help create 'complete' communities where transportation needs and livability are well-balanced. Among other revisions, the Road Design and Construction Standards incorporate roadway classification terminology that is consistent with the Transportation Plan and Community Development Code.
How do I get a Copy?
The electronic files may be downloaded below.
Comments/Suggestions?
Comments and suggestions regarding the Road Design and Construction Standards may be submitted using the Electronic form at the bottom of this page or by fax (503) 846-7910.
Note: "Private" street standards are addressed in Section 409 of the Community Development Code.
Download Files
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Document Downloads
| DOCUMENT | EFFECTIVE DATE | DESCRIPTION |
| Road Design and Construction Standards |
3/18/2011 |
PDF, 826KB, Ordinance 738 Text with Exhibits excluding Appendices and Details |
| Errata Document | PDF, 9KB, Updated June 15, 2011 | |
| Appendix A | 11/21/2012 | PDF, Arterial Roads Map of Eastern Washington Co. |
| Appendix B | 11/21/2012 | PDF, Arterial Roads Map of All Washington Co. |
| Appendix C | 11/21/2012 | PDF, Collector Roads Map of Eastern Washington Co. |
| Appendix D | 11/21/2012 | PDF, Collector Roads Map of All Washington Co. |
| Appendix E | 12/14/2018 | PDF, Road Eng. Plan Submittal/Review Checklist |
| Appendix F | 11/21/2012 | PDF, Road Design Exception Form |
| Appendix G | 11/21/2012 | PDF, Road Right-Of-Way Plant List |
| Appendix H | 11/21/2012 | PDF, Approval Process for New Pedestrian Crossings at Mid-Block Intersections |
| Memorandum | 10/30/2017 | PDF, Crosswalk Accessibility Requirements and Closure Process |
| Memorandum | 7/16/2019 | PDF, Facility Permit Submittal Requirements |
| Memorandum | 7/24/2019 | PDF, Revised Pedestrian Crossing Analysis for Local and Neighborhood Routes |
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 |
| 6921 - 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 |
Road Design and Construction Standards
Comments and Suggestions Form
