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Road Design and Construction Standards

Road Design and Construction Standards are technical documents used by consultants and engineers. They include inspection forms and specifications for road and traffic design.

The Road Design and Construction Standards establish the technical engineering design and construction requirements for public road and bridge improvements under our jurisdiction. Our road design and construction standards:

  • 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.

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Document Downloads

DocumentEffective DateDescription
3/18/2011Ordinance 738 Text with Exhibits excluding Appendices and Details
Errata Document (PDF 8.83 KB)
Updated June 15, 2011
Appendix A (PDF 997.73 KB)
11/21/2012Arterial Roads Map of Eastern Washington Co.
Appendix B (PDF 487.19 KB)
11/21/2012PDF, Arterial Roads Map of All Washington Co.
Appendix C (PDF 1006.33 KB)
11/21/2012Collector Roads Map of Eastern Washington Co.
Appendix D (PDF 495.08 KB)
11/21/2012Collector Roads Map of All Washington Co.
Appendix E (PDF 1.14 MB)
1/12/2024Road Eng. Plan Submittal/Review Checklist
Appendix F (PDF 65.66 KB)
5/7/2020Road Design Exception Form
Appendix G (PDF 196.57 KB)
5/10/2023Road Right-Of-Way Plant List
Appendix H (PDF 841.15 KB)
11/21/2012Approval Process for New Pedestrian Crossings at Mid-Block Intersections
10/30/2017Memorandum: Crosswalk Accessibility Requirements and Closure Process
4/29/2020Memorandum: Facility Permit Submittal Requirements
7/24/2019Memorandum: Revised Pedestrian Crossing Analysis for Local and Neighborhood Routes
Sight Distance Guidelines (PDF 156.43 KB)
4/8/2021Memorandum: Sight Distance Guidelines
1/5/2021Memorandum: Terminus Guidance for Public Roads
9/22/2021Memorandum: Channelized Right Turn Lanes on County Roadways
6/1/2022Memorandum: Clarification of Americans with Disabilities Act (ADA) Design Standards
3/7/2023Memorandum: Clear Zone Guidance for Utility Poles
3/22/2023Memorandum: Digital Signatures for Plan Submittals

ADA Ramp Inspection Forms

DocumentEffective DateDescription
Inspection form 7010 (PDF 1.41 MB)
9/16/2020Perpendicular ramps
Inspection Form 7020 (PDF 578.53 KB)
4/29/2020Parallel ramps
Inspection Form 7030 (PDF 1.3 MB)
4/29/2020Combination ramps
Inspection Form 7040 (PDF 501.4 KB)
4/29/2020Blended-transition ramps
Inspection Form 7050 (PDF 524.97 KB)
4/29/2020Cut-through ramps
Inspection Form 7060 (PDF 533.16 KB)
4/29/2020End-of-walk ramps
Inspection Form 7070 (PDF 524.35 KB)
4/29/2020Unique ramps
Inspection Form 7080 (PDF 460.22 KB)
4/29/2020ADA Push Buttons (Turn spaces and paved shoulders)
Inspection Form 7090 (PDF 352.86 KB)
4/29/2020ADA Push Buttons (Ramp runs and back-in maneuvers)

Traffic Signal Inspection Forms

DocumentEffective DateDescription
Inspection form 6910 (PDF 293.41 KB)
6/1/2022Field verification of signal pole
Inspection form 6920 (PDF 317.4 KB)
6/1/2022Field verification of signal pole foundation

Standard Details

DocumentEffective DatePDFDWG

1000 - Driveways

1010 - Driveway Pavement Section6/1/2022
1010.pdf (PDF 309.15 KB)
1010.dwg
1020 - Residential Driveway (w/ planter strip)6/1/2022
1020.pdf (PDF 311.41 KB)
1020.dwg
1030 - Residential Driveway (Curbtight Sidewalk)7/1/2024
1030.pdf (PDF 92.22 KB)
1030.dwg
1040 - Commercial Driveway (with Planter Strip)6/1/2022
1040.pdf (PDF 288.67 KB)
1040.dwg
1050 - Commercial Driveway (Curbtight Sidewalk)7/1/2024
1050.pdf (PDF 108.63 KB)
1050.dwg
1070 - Private Road Entrance Off Of Public Roads With Curbs8/1/2018
1070.pdf (PDF 151.85 KB)
1070.dwg
1080 - Driveway for Uncurbed Roads, Plan and Profile8/1/2018
1080.pdf (PDF 177.19 KB)
1080.dwg
1081 - Driveway for Uncurbed Roads, Cross-Section and Profiles8/1/2018
1081.pdf (PDF 242.04 KB)
1081.dwg
1082 - Culvert Tables3/31/2016
1082.pdf (PDF 56.81 KB)
1082.dwg
1090 - Access Along Unimproved Frontage3/18/2011
1090.pdf (PDF 74.39 KB)
1090.dwg

2000 - Curbs and Sidewalks

2010 - Standard Curb And Gutter6/1/2022
2010.pdf (PDF 362.64 KB)
2010.dwg
2020 - Modified Curb Details6/1/2022
2020.pdf (PDF 318.58 KB)
2020.dwg
2030 - Vertical Curb And Gutter Non-Mountable6/1/2022
2030.pdf (PDF 363.75 KB)
2030.dwg
2040 - Curb Type Transition Detail6/1/2022
2040.pdf (PDF 163.57 KB)
2040.dwg
2050 - Catch Basin Pavement Tapers3/18/2011
2050.pdf (PDF 57.6 KB)
2050.dwg
2110 - P.C. Concrete Sidewalk Detail7/1/2024
2110.pdf (PDF 85.66 KB)
2110.dwg
2111 - Monolithic Sidewalk With Wall Detail6/1/2022
2111.pdf (PDF 345.82 KB)
2111.dwg
2120 - Typical Sidewalk Obstruction Swing-Away Apron3/18/2011
2120.pdf (PDF 119.01 KB)
2120.dwg
2130 - Sidewalk Curb Ramp At Curb Return6/1/2022
2130.pdf (PDF 784.15 KB)
2130.dwg
2140 - End of Sidewalk Transition Detail7/1/2024
2140.pdf (PDF 78.07 KB)
2140.dwg
2150 - Pedestrian Path Or Bikeway9/1/2019
2150.pdf (PDF 25.32 KB)
2150.dwg
2210 - Standard Cul-De-Sac8/1/2018
2210.pdf (PDF 92.22 KB)
2210.dwg
2220 - Eyebrow - Corner3/8/2011
2220.pdf (PDF 70.28 KB)
2220.dwg
2230 - Curb Extension3/8/2011
2230.pdf (PDF 142.53 KB)
2230.dwg
2300 - Traffic Separator6/1/2023
2300.pdf (PDF 102.12 KB)
2300.dwg
2315 - Raised Median Nose Treatment7/1/2024
2315.pdf (PDF 70.84 KB)
2315.dwg

3000 - General

3010 - Centerline Survey Monument Detail7/01/2017
3010.pdf (PDF 82.15 KB)
3010.dwg
3020 - Pipe Bedding And Backfill Details7/1/2024
3020.pdf (PDF 81.98 KB)
3020.dwg
3030 - Offset Crown3/18/2011
3030.pdf (PDF 101.77 KB)
3030.dwg
3040 - Utility Location3/18/2011
3040.pdf (PDF 198.48 KB)
3040.dwg
3050 - Local Road Utility Easement3/18/2011
3050.pdf (PDF 60.93 KB)
3050.dwg
3060 - Mailbox Installation Plan1/1/2017
3060.pdf (PDF 49.71 KB)
3060.dwg
3070 - Vehicle Barrier Post3/18/2011
3070.pdf (PDF 132.99 KB)
3070.dwg
3080 - Steel Plate Installation7/1/20243080.dwg

4000 - Landscape

4010 - Root Barrier Detail6/1/2023
4010.pdf (PDF 90.4 KB)
4010.dwg

5000 - Drainage

5010 - Subsurface Drain Detail3/18/2011
5010.pdf (PDF 192.63 KB)
5010.dwg
5020 - Subgrade And Spring Catchment Detail3/18/2011
5020.pdf (PDF 156.58 KB)
5020.dwg
5030 - Rain Garden3/18/2011
5030.pdf (PDF 84.42 KB)
5030.dwg
5031 - Rain Garden Details3/18/2011
5031.pdf (PDF 75.42 KB)
5031.dwg

6000 - Traffic

6010 - Street Barricade Type III, Steel Posts End Of Road7/1/2024
6010.pdf (PDF 85.46 KB)
6010.dwg
6020 - Street Barricade Type III, Steel Posts Right Of Traffic7/1/2024
6020.pdf (PDF 156.24 KB)
6020.dwg
6030 - Sidewalk Barricade Type III, Steel Posts7/1/2024
6030.pdf (PDF 89.19 KB)
6030.dwg
6035 - Fire Access Detail6/1/2023
6035.pdf (PDF 111.35 KB)
6035.dwg
6040 - Tubular Marker7/1/2024
6040.pdf (PDF 86.59 KB)
6040.dwg
6050 - Sign Post Installation In P.C. Concrete Or Asphalt7/1/2024
6050.pdf (PDF 84.66 KB)
6050.dwg
6052 - Typical Sign Post Installation7/1/2024
6052.pdf (PDF 77.51 KB)
6052.dwg
6062 - Speed Cushion, Road 26' Wide Or Less, Speed 25 MPH Or Less7/1/2024
6062.pdf (PDF 280.15 KB)
6062.dwg
6110 - Striping Legend7/1/2024
6110.pdf (PDF 237.31 KB)
6110.dwg
6510 - Permanent Signing Legend6/1/2023
6510.pdf (PDF 404.21 KB)
6510.dwg
6511 - Street Name Signs7/1/2024
6511.pdf (PDF 593.43 KB)
6511.dwg
6512 - No Parking And Speed Signs6/1/2023
6512.pdf (PDF 324.46 KB)
6512.dwg
6520 - Future Development Sign3/18/2011
6520.pdf (PDF 174.42 KB)
6520.dwg
6521 - Private Road Sign3/18/2011
6521.pdf (PDF 58.75 KB)
6521.dwg
6522 - Next Signal Sign (Stand-Alone)7/1/20246522.dwg
6597 - Geogrid Location Sign9/1/2019
6597.pdf (PDF 52.1 KB)
6597.dwg
6598 - Culvert Number Sign8/12/2015
6598.pdf (PDF 62.08 KB)
6598.dwg
6599 - Bridge Number Sign3/18/2011
6599.pdf (PDF 62.37 KB)
6599.dwg
6800 - Solar Vehicle Speed Sign Pedestal6/1/2023
6800.pdf (PDF 73.63 KB)
6800.dwg
6801 - Pedestrian Rectangular Rapid Flashing Beacon Details6/1/2023
6801.pdf (PDF 104.27 KB)
6801.dwg
6810 - Luminaire Supports-Davit Style 25', 30' and 35' Mounting Heights6/1/2022
6810.pdf (PDF 707.7 KB)
6810.dwg
6820 - Typical Foundation For Luminaire Supports7/1/2024
6820.pdf (PDF 107.18 KB)
6820.dwg
6831 - Traffic Engineering Junction Box Details7/1/2024
6831.pdf (PDF 112.42 KB)
6831.dwg
6833 - Unmetered Service Cabinet Details7/1/2024
6833.pdf (PDF 74.54 KB)
6833.dwg
6911 - Traffic Signal Supports Notes And Design Criteria6/16/2014
6911.pdf (PDF 495.05 KB)
6911.dwg
6912 - Traffic Signal Supports General Details4/11/2016
6912.pdf (PDF 470.5 KB)
6912.dwg
6913 - Traffic Signal Supports Steel Details6/16/2014
6913.pdf (PDF 350.05 KB)
6913.dwg
6921 - Traffic Signal Supports Foundation Standard (Square)9/1/2019
6921.pdf (PDF 126.46 KB)
6921.dwg
6922 - Traffic Signal Supports Foundation Standard (Round)9/1/2019
6922.pdf (PDF 133.9 KB)
6922.dwg

Plan set files

The following files are for the production of project plan sets associated with Washington County projects only.

Washington County Plan Title SheetCAD files for use as templates in production of plan sets
Washington County Plan BordersCAD files for use as borders in production of plan sets
Washington County Utility Line StylesCAD and LIN files for use in existing utility drawings

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