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SDOT Transportation Infrastructure Inventory

Updated: December 3, 2013

This is an inventory of the major transportation infrastructure assets owned by SDOT. For a complete list of the assets, please refer to the 2010 Status and Condition Report. The total estimated replacement value  is in excess of $13.0 billion.

Asset Class

Asset

Inventory / Inventory Value

Bicycle/Pedestrian System

Bicycle Racks

2,545 racks  
 

Replacement value: $1.82 million

Marked Crosswalks

4,924 crosswalks
 

Replacement value: $2.64 million

Sidewalk System:

 

  • Sidewalks
  • Curbs
  • Filler
  • Curb ramps

Replacement value: $2.80 billion (does not include drainage improvements
 

33,226 block faces
26,712 curb ramps

Stairways

494 stairways / 34,775 linear feet
 

Replacement value: $37,290,000

Trails

39.4 lane miles of 12-foot-wide trails
 

Replacement value: $84.5 million

Channelization

Pavement Markings:

 

Pavement delineators, legends, hatchings, stop lines, parking space, curb markings

Replacement value: $4 million

 

1,318 4-inch–wide lane-line miles of pavement delineators

Intelligent Traffic Signs

Dynamic Message Signs

35 message signs
 

Replacement value: $3,750,000

Radar Speed Signs

20 speed signs
 

Replacement value: $150,000

Parking Payment Devices

Pay Stations

2,207 pay stations (installed starting in 2004)
 

Replacement value: $27,700,000

Pavement System

Pavement:

  • Arterial
    • Principal
    • Minor
    • Collector

 

  • Non-arterial

 

Replacement value: $2.80 billion 617 12-foot-wide lane miles
567 12-foot-wide lane miles
347 12-foot-wide lane miles
 

2,412 12-foot-wide lane miles

Replacement value: $3.50 billion

Real Property

Parcels

106 parcels and ROW remnants

Buildings

8 buildings

Regulated Assets

Shoreline Street Ends

149 street ends

Regulated Landscaped Areas

5,371,000 sq ft  

Regulated Trees

37,142 trees

Roadway Structures

Areaway Street Walls

236 areaway street walls

Replacement value: $158.0 million

Bridges

  • Movable Vehicular Bridges
  • Non-movable Vehicular bridges
  • Pedestrian bridges

 

70 bridges fully owned by SDOT

37 bridges in partial ownership
 
12 bridges

Total bridge deck surface: 2,845,600 sq feet
 

Total replacement value: $1.50 billion

Bridge Hydrant Vaults

Installed on 13 bridges

Retaining Walls, including Alaskan Way Seawall

582 retaining walls

Replacement value (all walls exclusive of seawall): $843 million

Replacement value (seawall): $981 million

Seattle Streetcars

Streetcar System

1 line – South Lake Union
 

Replacement value: $55.8 million

Signs

Sign Assemblies:

 

  • Regulatory signs
  • Warning signs
  • Directional/Guide signs

Replacement value: $52.1 million

  • 94,445 signs
  • 18,249 signs
  • 37,398 signs

 

Traffic Safety Structures & Devices

Chicanes

22 chicanes
 

Replacement value: $306,000

Crash Cushions

40 crash cushions
 

Replacement value: $746,000

Curb Bulbs

92 curb bulbs
 

Replacement value: $2.45 million

Guardrails

73,000 linear feet
 

Replacement value: $3.26 million

Speed Cushions

19 speed cushions
 

Replacement value: $224,000

Speed Humps

73 speed humps
 

Replacement value: $214,000

Traffic Circles

1,022 traffic circles
 

Replacement value: $10.85 million

Traffic Signal System

Beacons

280 beacons
 

Replacement value: $2.45 million

Cameras  

226 CCTV camera assemblies
 

Replacement value: $1.82 million

Traffic Signal Assemblies

1,051 traffic signal assemblies
 

Replacement value: $78.83 million

Urban Forest

Landscaped Areas

5,371,000 sq ft / 124 acres

 

Replacement value: $33.31 million

Trees

37,142 trees
 

Replacement value: $18.90 million

Not Assigned to an Asset Class

SDOT Jurisdiction Public Right-of-Way

579,886,000 sq ft

 

24.8% of land surface within the City limits

 

Please contact the manager responsible for the asset you are interested in for more information:

Bicycle/Pedestrian System, Sandra Woods, email: sandra.woods@seattle.gov  

Stairways, Ainalem Molla, email: ainalem.molla@seattle.gov

Channelization, Dongho Chang, email: dongho.chang@seattle.gov

Intelligent Traffic Signs, Loren Raynes, email: loren.raynes@seattle.gov

Parking Payment Devices, Mike Estey, email: mike.estey@seattle.gov

Pavement System, Elizabeth Sheldon, email; elizabeth.sheldon@seattle.gov

Roadway Structures, Ainalem Molla, email: ainalem.molla@seattle.gov

Seattle Streetcars, Ethan Melone, email: ethan.melone@seattle.gov

Signs, Dongho Chang, email: dongho.chang@seattle.gov  

Traffic Safety Structures & Devices, Dongho Chang, email: dongho.chang@seattle.gov

Traffic Signal System, Loren Raynes, email: loren.raynes@seattle.gov

Urban Forest, Darren Morgan, email: darren.morgan@seattle.gov

 

 

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