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Bridge Statistics for Mountlake Terrace, Washington (WA)
Condition, Traffic, Stress, Structural Evaluation, Project Costs


  • National Bridge Inventory (NBI) Statistics
  • 11Number of bridges
  • 112m367ftTotal length
  • $27,844,000Total costs
  • 718,190Total average daily traffic
  • 43,290Total average daily truck traffic
  • National Bridge Inventory (NBI) Registered Bridges for Mountlake Terrace
  • No street view available for this location

New bridges - Historical Statistics

  • 61960-1969
  • 41990-1999
  • 12010-2015

Reconstructed bridges - Historical Statistics

  • 11970-1979
  • 11980-1989

Average Daily Traffic

Bridge Condition - Deck

Bridge Condition - Superstructure

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Structure Number: 7071D,  Location: 0.7 N JCT SR 104 (Lat: 47.792056,  Lng: -122.316556),  Route carried "on" structure: City street ,  Year Built: 1963,  Status: Open,  Structure Length: 10.30m (33.79ft),  Average Daily Traffic: 1,905 (year 2002),  Truck Traffic: 1%,  Average Future Daily Traffic: 3,880 (year 2032),  Design Load: HS 20,  Features Intersected: I-5,  Facility Carried by Structure: 228TH ST SW
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.545,  Lanes on structure: 2,  Lanes under structure: 9,  Owner: State Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  Skew: 9 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 5,  Length of Maximum Span: 24.1m (79.1ft),  Curb or Sidewalk Widths: Left: 0.6m (2.0ft),  Right: 1.5m (4.9ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 11.6m (38.1ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 61.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 36.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Underclear: High priority of corrective action,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 15,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 7227A,  Location: 0.4 N JCT SR 104 (Lat: 47.785000,  Lng: -122.315000),  Route carried "on" structure: City street ,  Year Built: 1963,  Year Reconstructed: 1983,  Status: Open,  Structure Length: 9.69m (31.79ft),  Average Daily Traffic: 8,085 (year 2012),  Truck Traffic: 5%,  Average Future Daily Traffic: 12,992 (year 2032),  Design Load: HS 20,  Features Intersected: I-5,  Facility Carried by Structure: 236TH ST SW
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.064,  Lanes on structure: 4,  Lanes under structure: 11,  Owner: State Highway Agency,  Approaching Roadway Width: 14.6m (47.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 28.0m (91.9ft),  Curb or Sidewalk Widths: Left: 2.4m (7.9ft),  Right: 0.0m,  Curb-To-Curb Width: 14.6m (47.9ft),  Out-to-Out Width: 17.5m (57.4ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 44.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 26.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: High priority of replacement,  Underclear: High priority of corrective action,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 15,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric
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Structure Number: 12790A,  Location: 1.5 N JCT SR 104 (Lat: 47.799500,  Lng: -122.315278),  Route carried "on" structure: County highway ,  Year Built: 1963,  Year Reconstructed: 1985,  Status: Open,  Structure Length: 10.30m (33.79ft),  Average Daily Traffic: 25,227 (year 2010),  Truck Traffic: 5%,  Average Future Daily Traffic: 42,507 (year 2032),  Design Load: HS 20,  Features Intersected: I-5,  Facility Carried by Structure: 220TH ST SW
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.080,  Lanes on structure: 6,  Lanes under structure: 8,  Owner: State Highway Agency,  Approaching Roadway Width: 21.9m (71.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 30.5m (100.1ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 3.0m (9.8ft),  Curb-To-Curb Width: 21.9m (71.9ft),  Out-to-Out Width: 25.2m (82.7ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Operating Rating: 51.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 30.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: High priority of corrective action,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: October 14,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Latex Concrete
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Structure Number: 14326A,  Location: 3.2 N JCT SR 523 (Lat: 47.782722,  Lng: -122.316194),  Route carried "on" structure: Ramp Interstate 5,  Year Built: 1995,  Status: Open,  Structure Length: 11.67m (38.29ft),  Average Daily Traffic: 4,332 (year 2012),  Truck Traffic: 5%,  Average Future Daily Traffic: 7,824 (year 2032),  Design Load: HS 25,  Features Intersected: NBCD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.290,  Lanes on structure: 2,  Lanes under structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  Material/Design: Prestressed concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 50.6m (166.0ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 9.8m (32.2ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 89.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 89.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Meets minimum limits,  Underclear: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: Febuary 14,  Bridge Improvement Cost: $7,621,000,  Roadway Improvement Cost: $1,524,000,  Total Project Cost: $15,242,000 ( Estimate for 2010),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 14326B,  Location: 3.2 N JCT SR 523 (Lat: 47.785000,  Lng: -122.310000),  Route carried "on" structure: Ramp Interstate 5,  Year Built: 1995,  Status: Open,  Structure Length: 9.39m (30.81ft),  Average Daily Traffic: 5,907 (year 2012),  Truck Traffic: 5%,  Average Future Daily Traffic: 10,668 (year 2032),  Design Load: HS 25,  Features Intersected: S-EW RAMP, I-5,  Facility Carried by Structure: SBCD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.097,  Lanes on structure: 2,  Lanes under structure: 1,  Owner: State Highway Agency,  Approaching Roadway Width: 15.2m (49.9ft),  Material/Design: Prestressed concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 40.2m (131.9ft),  Curb-To-Curb Width: 12.8m (42.0ft),  Out-to-Out Width: 13.7m (44.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 89.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 89.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Superior to present desirable criteria,  Underclear: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: October 14,  Bridge Improvement Cost: $6,301,000,  Roadway Improvement Cost: $1,260,000,  Total Project Cost: $12,602,000 ( Estimate for 2010),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 7071D,  Location: 0.7 N JCT SR 104 (Lat: 47.792056,  Lng: -122.316556),  Route carried "under" structure: Interstate 5,  Year Built: 1963,  Structure Length: 10.30m (33.79ft),  Average Daily Traffic: 176,549 (year 2012),  Truck Traffic: 6%,  Features Intersected: I-5,  Facility Carried by Structure: 228TH ST SW
Minimum Vertical Clearance: 5.36m (17.59ft),  Kilometerpoint: 287.593,  Lanes on structure: 2,  Lanes under structure: 8,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 24.1m (79.1ft)

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Structure Number: 7227A,  Location: 0.4 N JCT SR 104 (Lat: 47.785000,  Lng: -122.315000),  Route carried "under" structure: Interstate 5,  Year Built: 1963,  Structure Length: 9.69m (31.79ft),  Average Daily Traffic: 155,580 (year 2012),  Truck Traffic: 6%,  Features Intersected: I-5,  Facility Carried by Structure: 236TH ST SW
Minimum Vertical Clearance: 5.64m (18.50ft),  Kilometerpoint: 286.836,  Lanes on structure: 4,  Lanes under structure: 11,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 2.8m (9.2ft)

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Structure Number: 12790A,  Location: 1.5 N JCT SR 104 (Lat: 47.799500,  Lng: -122.315278),  Route carried "under" structure: Interstate 5,  Year Built: 1963,  Structure Length: 10.30m (33.79ft),  Average Daily Traffic: 160,031 (year 2012),  Truck Traffic: 6%,  Features Intersected: I-5,  Facility Carried by Structure: 220TH ST SW
Minimum Vertical Clearance: 0.66m (2.17ft),  Kilometerpoint: 288.478,  Lanes on structure: 6,  Lanes under structure: 8,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 30.5m (100.1ft)

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Structure Number: 14326A,  Location: 3.1 N JCT SR 523 (Lat: 47.782722,  Lng: -122.316194),  Route carried "under" structure: Ramp Interstate 5,  Year Built: 1995,  Structure Length: 11.67m (38.29ft),  Average Daily Traffic: 12,681 (year 2012),  Truck Traffic: 5%,  Features Intersected: NBCD
Minimum Vertical Clearance: 5.44m (17.85ft),  Kilometerpoint: 1.625,  Lanes on structure: 2,  Lanes under structure: 2,  Material/Design: Prestressed concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Length of Maximum Span: 50.6m (166.0ft)

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Structure Number: 14326B,  Location: 3.2 N JCT SR 523 (Lat: 47.785000,  Lng: -122.310000),  Route carried "under" structure: Ramp Interstate 5,  Year Built: 1995,  Structure Length: 9.39m (30.81ft),  Average Daily Traffic: 12,313 (year 2012),  Truck Traffic: 13%,  Features Intersected: S-EW RAMP, I-5,  Facility Carried by Structure: SBCD
Minimum Vertical Clearance: 5.26m (17.26ft),  Kilometerpoint: 0.402,  Lanes on structure: 2,  Lanes under structure: 1,  Material/Design: Prestressed concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Length of Maximum Span: 40.2m (131.9ft)

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Structure Number: 17649A,  Location: 0.6 N JCT SR 104 (Lat: 47.786389,  Lng: -122.315833),  Route carried "under" structure: Interstate 5,  Year Built: 2010,  Structure Length: 9.85m (32.32ft),  Average Daily Traffic: 155,580 (year 2012),  Truck Traffic: 6%,  Features Intersected: I-5 NB,  Facility Carried by Structure: SOUND TRANSIT PED
Minimum Vertical Clearance: 5.72m (18.77ft),  Kilometerpoint: 287.062,  Lanes under structure: 5,  Material/Design: Prestressed concrete continuous,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 42.7m (140.1ft)

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