Road design and construction standards for unincorporated King County

2016 King County Road Standards

• 2016 King County Road Standards (817KB PDF)
• 2016 King County Road Standards - Figures (5MB PDF)

CADD files

The following CADD file drawings are made available in DWG TrueView™ format.

Section 2-000 Roadway

• 2-001 Rural Type Roadway
• 2-002 Vertical Curb Type Roadway
• 2-003 Rolled Curb Type Roadway
• 2-004 Gravel Surface Roadway
• 2-005 Extruded Curb Roadway
• 2-006 Private Porous Roadway
• 2-007 Cul-De-Sacs
• 2-008 Temporary Cul-de-Sac
• 2-009 Urban/Rural Eyebrow
• 2-010 Half Road
• 2-011 Alley Pavement Detail
• 2-012 Hammerhead Turnaround
• 2-013 Measuring Sight Distance
• 2-014 Intersection Landing
• 2-015 Widening and Overlay
• 2-016 Neighborhood Street Turnaround Alternatives

Section 3-000 Curbs, Curb Ramps, Sidewalks, Driveways and Trails

• 3-001 Curb and Sidewalk Joints
• 3-002 Curb Details
• 3-003 Shoulder and Ditch Section Driveway
• 3-004 Residential Driveway Approach - Urban
• 3-005 Commercial/Industrial Driveway Approach-Routed Sidewalk
• 3-006 Commercial/Industrial Driveway Approach-Routed Sidewalk, Planting Strip
• 3-007 Commercial/Industrial Driveway Approach, Parallel Sidewalk
• 3-008 Location and Width of New Driveways
• 3-009 Joint Use Driveway Tract
• 3-010 Typical Curb Ramp Locations
• 3-011 Curb Ramp 1A
• 3-012 Curb Ramp Type 1B
• 3-013 Curb Ramp Within Radius
• 3-014 Cement Concrete Sidewalk Transition to Asphalt Shoulder
• 3-015 Curb Ramp 2A, 2B Alternate
• 3-016 Typical Intersection Plan With Asymmetrical Lanes
• 3-017 Preferred Equestrian Trail Easement Adjacent to Public Road
• 3-018 Shared Use Trails, Paved Tread, Double Track
• 3-019 Shared Use Trails, Natural Tread, Double Track
• 3-020 Limited Use Trails, Paved Tread, Single Track
• 3-021 Bikeways

Section 4-000 Channelization

• 4-001 Channelization Details
• 4-002 Refuge Islands

Section 5-000 Roadside Appurtenances

• 5-001 Clearance of Roadside Obstacles on Shoulder Type Road
• 5-002 Roadway Barricades
• 5-003 Rock Facing, Cut Section
• 5-004 Rock Facing, Fill Section
• 5-005 Rock Facing Under Sidewalk
• 5-006 Rock Facing, Fill Section Reinforcement
• 5-007 Concrete Steps and Metal Handrail
• 5-008 Metal Handrail
• 5-009 Street Tree Location
• 5-010 Tree Setbacks/Blockouts/Rock facings
• 5-011 Tree Planting in Planting Strips
• 5-012 Larger Fills Around Trees
• 5-013 Minor Fills Around Trees
• 5-014 Mailbox Installation Type 1 & 2 (1 of 3)
• 5-015 Mailbox Installation Type 1 & 2 (2 of 3)
• 5-016 Mailbox Installation Type 1 & 2 (3 of 3)
• 5-017 (N.D.C.B.U.) Mailbox Installation Neighborhood Delivery and Collection Box Unit
• 5-018 Bollards
• 5-019 Roadway Survey Monument With Case & Cover
• 5-020 Off-Roadway Survey Monument
• 5-021 Transverse Joint Planing and Feathering
• 5-022 Chain Link Fence – 18” Wall Height
• 5-023 Chain Link Fence – 6’or Higher Wall 

Section 7-000 Drainage

• 7-001 Beveled End Pipe Section
• 7-002 Field Tapping of Concrete Pipe
• 7-003 Catch Basin Type 1
• 7-004 Catch Basin Type 1-L
• 7-005 Catch Basin Type 2 - 48", 54", 60", 72" and 96"
• 7-006 Catch Basin Details
• 7-007 Manhole Type 1 - 48", 54" and 60"
• 7-008 Manhole Type 2 - 72" & 96"
• 7-009 Manhole Type 3 - 48", 54", 60", 72" and 96"
• 7-010 Manhole Type 4
• 7-011 Manhole Details
• 7-012 Curb Inlet
• 7-013 Standard Grate
• 7-014 Standard Frame with Vertical or Extruded Curb Installation
• 7-015 Solid Cover
• 7-016 Through-curb Inlet Frame
• 7-017 Through-curb Inlet Frame and Grate with Vertical Curb Installation
• 7-018 Vaned Grate
• 7-019 Rolled Curb Frame and Grate
• 7-020 Rolled Curb Frame and Grate Installation
• 7-021 Rolled Curb Vaned Grate
• 7-022 Locking Manhole Cover
• 7-023 Locking Manhole Frame
• 7-024 Rock-lined Shoulder Ditches-Curbed Shoulders
• 7-025 Restrictor Detail
• 7-026 Tee Section Shear Gate Detail
• 7-027 Flow Restrictor Control Device, Baffle Type
• 7-028 Debris Cage
• 7-029 Extended Debris Cage

2007 King County Road Standards

• 2007 King County Road Design and Construction Standards (9MB PDF)
  (Complete document including figures, not searchable)

• 2007 King County Road Design and Construction Standards (1MB PDF)
  (Version with figures linked separately below, is searchable)

Figures

• Chapter 2 (363KB PDF)
• Chapter 3 (836KB PDF)
• Chapter 4 (241KB PDF)
• Chapter 5 (834KB PDF)
• Chapter 7 (1MB PDF)

CADD files

The following CADD file drawings are made available in DWG TrueView™ format.

Section 2-000 Roadway

• 2-001 Rural Type Roadway
• 2-002 Vertical Curb Type Roadway
• 2-003 Rolled Curb Type Roadway
• 2-004 Gravel Surface Roadway
• 2-005 Extruded Curb Roadway
• 2-006 Cul-de-Sacs
• 2-007 Temporary Cul-de-Sac
• 2-008 Urban/Rural Eyebrow
• 2-009 Half Street
• 2-010 Alley Pavement Detail
• 2-011 Hammerhead Turnaround
• 2-012 Measuring Sight Distance
• 2-013 Intersection Landing

Section 3-000 Curbs, Curb Ramps, Sidewalks, Driveways and Trails

• 3-001 Curb and Sidewalk Joints
• 3-002 Curb Details
• 3-003 Shoulder and Ditch Section Driveway
• 3-004 Residential Driveway Approach - Urban
• 3-005 Commercial/Industrial Driveway Approach - Routed Sidewalk
• 3-006 Commercial/Industrial Driveway Approach - Routed Sidewalk, Planting Strip
• 3-007 Commercial/Industrial Driveway Approach, Parallel Sidewalk
• 3-008 Location and Width of New Driveways
• 3-009 Joint Use Driveway Tract
• 3-010 Curb Ramp Locations
• 3-011 Curb Ramp 1A
• 3-012 Curb Ramp Type 1B
• 3-013 Curb Ramp Within Radius
• 3-014 Cement Concrete Sidewalk Transition to Asphalt Shoulder
• 3-015 Curb Ramp 2A, 2B Alternative
• 3-016 Typical Intersection Plan with Asymmetrical Lanes
• 3-017 Preferred Equestrian Trail Easement Adjacent to Public Street
• 3-018 Shared Use Trails, Paved Tread, Double Track
• 3-019 Shared Use Trails, Natural Tread, Double Track
• 3-020 Limited Use Trails, Paved Tread, Single Track
• 3-021 Bikeways

Section 4-000 Channelization

• 4-001 through 4-009
  4-001 Pavement Markings
  4-002 Intersection Approach Striping
  4-003 Pavement Symbols
  4-004 Raised Pavement Markers
  4-005 Merge and Dual Turn Lane
  4-006 Bike Lane and Right Turn Drop
  4-007 Bike Lane and Right Turn Pocket
  4-008 Left Turn Lanes
  4-009 Median Islands

Section 5-000 Roadside Appurtenances

• 5-001 Clearance of Roadside Obstacles on Shoulder Type Road
• 5-002 Roadway Barricades
• 5-003 Rock Facing, Cut Section
• 5-004 Rock Facing, Fill Section
• 5-005 Rock Facing, Under Sidewalk
• 5-006 Rock Facing, Fill Section Reinforcement
• 5-007 Concrete Steps and Metal Handrail
• 5-008 Metal Handrail
• 5-009 Street Tree Location
• 5-010 Tree Setbacks/Blockouts/Rock Facings
• 5-011 Tree Planting in Planting Strips
• 5-012 Larger Fills Around Trees
• 5-013 Minor Fills Around Trees
• 5-014 Mailbox Installation Type 1 & 2 (1 of 4)
• 5-015 Mailbox Installation Type 1 & 2 (2 of 4)
• 5-016 Mailbox Installation Type 1 & 2 (3 of 4)
• 5-017 (NDCBU) Mailbox Installation Neighborhood Delivery and Collection Box Unit (4 of 4)
• 5-018 Bollards
• 5-019 Roadway Survey Monument with Case & Cover
• 5-020 Off-Roadway Survey Monument
• 5-021 Transverse Joint Planing

Section 7-000 Drainage

• 7-001 Beveled End Pipe Section
• 7-002 Field Tapping of Concrete Pipe
• 7-003 Catch Basin Type 1
• 7-004 Catch Basin Type 1-L
• 7-005 Catch Basin Type 2 - 48", 54", 60", 72" and 96"
• 7-006 Catch Basin Details
• 7-007 Manhole Type 1 - 48", 54" and 60"
• 7-008 Manhole Type 2 - 72" & 96"
• 7-009 Manhole Type 3 - 48", 54", 60", 72" and 96"
• 7-010 Manhole Type 4
• 7-011 Manhole Details
• 7-012 Curb Inlet
• 7-013 Standard Grate
• 7-014 Standard Frame with Vertical or Extruded Curb Installation
• 7-015 Solid Cover
• 7-016 Through-Curb Inlet Frame
• 7-017 Through-Curb Inlet Frame and Grate with Vertical Curb Installation
• 7-018 Vaned Grate
• 7-019 Rolled Curb Frame and Grate
• 7-020 Rolled Curb Frame and Grate Installation
• 7-021 Rolled Curb Vaned Grate
• 7-022 Locking Manhole Cover
• 7-023 Locking Manhole Frame
• 7-024 Rock-Lined Shoulder Ditches - Curbed Shoulders
• 7-025 Restrictor Detail
• 7-026 Tee Section Shear Gate Detail
• 7-027 Flow Restrictor Control Device, Baffle Type
• 7-028 Debris Cage
• 7-029 Extended Debris Cage

1993 King County Road Standards

• 1993 King County Road Standards (5MB PDF)
  (Complete document including figures, not searchable)

1987 King County Road Standards

• 1987 King County Road Standards (4MB PDF)
  (Complete document including figures, not searchable)

1979 King County Road Standards

• 1979 King County Road Standards (2MB PDF)
  (Complete document including figures, not searchable)