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SDOT Transportation Infrastructure Inventory

Updated: January 31, 2008

This is an inventory of the major transportation infrastructure assets owned by SDOT. For a complete list of the assets, please refer to the Status and Condition Report. The total estimated replacement value as of August 1, 2007, is in excess of $12.1 billion.

 

Asset Class

Asset

Inventory / Inventory Value

Bicycle/Pedestrian System

Bicycle Racks

3,000 racks (installed since 1993)

 

Replacement value: $1,995,000

Marked Crosswalks

6,000 crosswalks

 

Replacement value: $3.0 million

Sidewalk System:

 

 

  • Sidewalks
  • Curbs
  • Filler
  • Curb ramps

Replacement value: $2.65 billion (does not include drainage improvements

 

2,256 miles / 67.5 million sq ft
2,274 miles
2,033 miles / 74.8 million sq ft
26,712 curb ramps

Stairways

482 stairways / 34,775 linear feet

 

Replacement value: $34,775,000

Trails

39.4 lane miles of 12-foot-wide trails

 

Replacement value: $78.8 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

5 message signs

 

Replacement value: $500,000

Radar Speed Signs

3 speed signs

 

Replacement value: $21,000

Parking Payment Devices

Pay Stations

1,845 pay stations (installed starting in 2004)

 

Replacement value: $20,387,250

Parking Meters

1,000 parking meters

 

Replacement value: $500,000

Pavement System

Pavement:

  • Arterial
    • Principal
    • Minor
    • Collector

 

  • Non-arterial

 

Replacement value: $2.6 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: $3.25 billion

Real Property

Parcels

106 parcels and ROW remnants

Buildings

8 buildings

Regulated Assets

Shoreline Street Ends

149 street ends

Regulated Landscaped Areas

16,200,000 sq ft / 373.5 acres

Regulated Trees

105,000 trees

Roadway Structures

Areaway Street Walls

205 areaway street walls

 

Replacement value: $144,620,000

Bridges

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

 

4 bridges

 

76 bridges fully owned by SDOT

33 bridges in partial ownership

 

12 bridges

 

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

 

Total replacement value: $1,422,800,000

Bridge Hydrant Vaults

Installed on 13 bridges

Retaining Walls, including Alaskan Way Seawall

582 retaining walls

Replacement value (all walls exclusive of seawall): $786,127,000

Replacement value (seawall): $915 million

Seattle Streetcars

Streetcar System

1 line – South Lake Union

 

Replacement value: $52 million

Signs

Sign Assemblies:

 

  • Regulatory signs
  • Warning signs
  • Directional/Guide signs

Replacement value: $48.6 million


94,445 signs

18,249 signs
37,398 signs

 

Traffic Safety Structures & Devices

Chicanes

19 chicanes

 

Replacement value: $285,000

Crash Cushions

34 crash cushions

 

Replacement value: $595,000

Curb Bulbs

92 curb bulbs

 

Replacement value: $2.3 million

Guardrails

66,913 linear feet

 

Replacement value: $8,085,320

Speed Cushions

19 speed cushions

 

Replacement value: $209,000

Speed Humps

47 speed humps

 

Replacement value: $199,750

Traffic Circles

1,000 traffic circles

 

Replacement value: $10 million

Traffic Signal System

Beacons

296 beacons

 

Replacement value: 2.28 million

CCTV Camera Assemblies

46 CCTV camera assemblies

 

Replacement value: $345,000

Traffic Signal Assemblies

1,001 traffic signal assemblies

 

Replacement value: $75 million

Urban Forest

Landscaped Areas

5,371,000 sq ft / 124 acres

 

Replacement value: $31.25 million

Trees

35,000 trees

 

Replacement value: $17.75 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, Eric Widstrand, email: eric.widstrand@seattle.gov

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

Channelization, Eric Widstrand, email: eric.widstrand@seattle.gov

Intelligent Traffic Signs, Brian Kemper, email: brian.kemper@seattle.gov

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

Pavement System, Benjamin Hansen, email: benjamin.hansen@seattle.gov

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

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

Signs, Eric Widstrand, email: eric.widstrand@seattle.gov

Traffic Safety Structures & Devices, Eric Widstrand, email: eric.widstrand@seattle.gov

Traffic Signal System, Brian Kemper, email: brian.kemper@seattle.gov

Urban Forest, Roy Francis, email: roy.francis@seattle.gov

 

 

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