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Bridge Statistics for Topanga, California (CA)
Condition, Traffic, Stress, Structural Evaluation, Project Costs


  • National Bridge Inventory (NBI) Statistics
  • 11Number of bridges
  • 56ft / 17.4mTotal length
  • $525,000Total costs
  • 46,769Total average daily traffic
  • 1,074Total average daily truck traffic
  • 57,407Total future (year 2037) average daily traffic
  • National Bridge Inventory (NBI) Registered Bridges for Topanga
  • No street view available for this location

New bridges in Topanga, CA - historical statistics
  • New bridges - historical statistics
  • 51920-1929
  • 31930-1939
  • 11940-1949
  • 11950-1959
  • 11960-1969
Reconstructed bridges in Topanga, CA - Historical Statistics
  • Reconstructed bridges - Historical Statistics
  • 11950-1959
  • 51960-1969
  • 01970-1979
  • 11980-1989
Average Bridge Daily Traffic in Topanga, CA
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 9.1%Very good
  • 72.7%Good
  • 18.2%Fair
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 9.1%Very good
  • 54.5%Good
  • 27.3%Fair
  • 9.1%Poor
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 36.4%Good
  • 9.1%Satisfactory
  • 36.4%Fair
  • 18.2%Poor
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 9.1%Excellent
  • 9.1%Very good
  • 9.1%Good
  • 45.5%Satisfactory
  • 9.1%Fair
  • 18.2%Poor
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Structure Number: 53 0144,  Location: 07-LA-027-4.20 (Lat: 34.088719,  Lng: -118.602511),  Route carried "on" structure: State highway 27,  Year Built: 1934,  Status: Open,  Structure Length: 4.21m (13.81ft),  Average Daily Traffic: 15,050 (year 2014),  Truck Traffic: 3%,  Average Future Daily Traffic: 19,062 (year 2037),  Design Load: HS 15,  Features Intersected: TOPANGA CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 4.200,  Lanes on structure: 2,  Base Highway Network: Yes (,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  Skew: 3 degrees,  Material/Design: Concrete,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 21.3m (69.9ft),  Curb or Sidewalk Widths: Left: 0.6m (2.0ft),  Right: 0.6m (2.0ft),  Curb-To-Curb Width: 9.1m (29.9ft),  Out-to-Out Width: 11.0m (36.1ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 94.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 57.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: Febuary 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 53 0407,  Location: 07-LA-027-6.56 (Lat: 34.113092,  Lng: -118.590475),  Route carried "on" structure: State highway 27,  Year Built: 1927,  Year Reconstructed: 1989,  Status: Open,  Structure Length: 1.42m (4.66ft),  Average Daily Traffic: 15,650 (year 2014),  Truck Traffic: 3%,  Average Future Daily Traffic: 19,887 (year 2037),  Design Load: HS 20,  Features Intersected: GARAPITO CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 6.560,  Lanes on structure: 2,  Base Highway Network: Yes (,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Skew: 2 degrees,  Material/Design: Concrete,  Design/Construction: Arch - Thru,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 14.2m (46.6ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 12.1m (39.7ft),  Out-to-Out Width: 13.2m (43.3ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Very good,  Operating Rating: 77.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 46.3 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,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: Febuary 2020
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Structure Number: 53C0939,  Location: 50FT W/O TOPANGA CYN RD (Lat: 34.089781,  Lng: -118.604856),  Route carried "on" structure: County highway ,  Year Built: 1926,  Status: Posted for load,  Structure Length: 2.44m (8.01ft),  Average Daily Traffic: 3,900 (year 2012),  Average Future Daily Traffic: 4,300 (year 2041),  Features Intersected: TOPANGA CYN CRK,  Facility Carried by Structure: OLD TOPANGA CYN RD
Minimum Vertical Clearance: 5.79m (19.00ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.4m (27.6ft),  Skew: 2 degrees,  Material/Design: Wood or Timber,  Design/Construction: Truss - Thru,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 11.6m (38.1ft),  Curb-To-Curb Width: 8.4m (27.6ft),  Out-to-Out Width: 8.7m (28.5ft)

Condition: Deck: Good,  Superstructure: Poor,  Substructure: Fair,  Channel: Poor,  Operating Rating: 12.0 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 3.9 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: High priority of replacement,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Length Of Structure Improvement: 2.44m (8.01ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: March 2020,  Critical Feature Inspection Date: April 2020,  Bridge Improvement Cost: $487,000,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 53C0963,  Location: 300FT S/O TOPANGA SKY DR (Lat: 34.107025,  Lng: -118.629131),  Route carried "on" structure: County highway ,  Year Built: 1927,  Year Reconstructed: 1960,  Status: Open,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 2,300 (year 2011),  Truck Traffic: 2%,  Average Future Daily Traffic: 2,900 (year 2041),  Features Intersected: OLD TOPANGA CRK,  Facility Carried by Structure: OLD TOPANGA CYN RD
Minimum Vertical Clearance: 30.47m (99.97ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.2m (26.9ft),  Skew: 1 degrees,  Material/Design: Wood or Timber,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.0m (23.0ft),  Curb-To-Curb Width: 8.2m (26.9ft),  Out-to-Out Width: 8.8m (28.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 55.4 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 39.9 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2021,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 53C0966,  Location: 400FT N/O TOPANGA SKY DR (Lat: 34.108475,  Lng: -118.629131),  Route carried "on" structure: County highway ,  Year Built: 1928,  Year Reconstructed: 1960,  Status: Open,  Structure Length: 0.74m (2.43ft),  Average Daily Traffic: 2,300 (year 2011),  Truck Traffic: 2%,  Average Future Daily Traffic: 2,900 (year 2041),  Features Intersected: OLD TOPANGA CRK,  Facility Carried by Structure: OLD TPNG CN RD N/C
Minimum Vertical Clearance: 30.47m (99.97ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.4m (27.6ft),  Skew: 3 degrees,  Material/Design: Wood or Timber,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.1m (20.0ft),  Curb-To-Curb Width: 8.3m (27.2ft),  Out-to-Out Width: 8.7m (28.5ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 53.1 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 38.6 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Meets minimum limits,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2021,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 53C0968,  Location: 0.1MI N/O OLD TOPANGA RD (Lat: 34.110719,  Lng: -118.628983),  Route carried "on" structure: County highway ,  Year Built: 1928,  Year Reconstructed: 1967,  Status: Open,  Structure Length: 0.69m (2.26ft),  Average Daily Traffic: 870 (year 2014),  Truck Traffic: 1%,  Average Future Daily Traffic: 1,040 (year 2041),  Features Intersected: OLD TOPANGA CRK,  Facility Carried by Structure: OAK DR
Minimum Vertical Clearance: 30.47m (99.97ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.6m (28.2ft),  Skew: 2 degrees,  Material/Design: Wood or Timber,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.4m (21.0ft),  Curb-To-Curb Width: 8.6m (28.2ft),  Out-to-Out Width: 8.8m (28.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Poor,  Channel: Satisfactory,  Operating Rating: 32.4 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 24.0 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Meets minimum limits,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Meets minimum limits,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2021,  Bridge Improvement Cost: $140,000,  Roadway Improvement Cost: $28,000,  Total Project Cost: $235,000 ( Estimate for 2019),  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 53C0979,  Location: 1.9MI N/O TOPANGA CYN BL (Lat: 34.111639,  Lng: -118.633731),  Route carried "on" structure: County highway ,  Year Built: 1936,  Year Reconstructed: 1960,  Status: Posted for load,  Structure Length: 0.85m (2.79ft),  Average Daily Traffic: 2,712 (year 2012),  Truck Traffic: 2%,  Average Future Daily Traffic: 2,983 (year 2041),  Features Intersected: RED ROCK CRK,  Facility Carried by Structure: OLD TOPANGA CYN RD
Minimum Vertical Clearance: 30.47m (99.97ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.9m (22.6ft),  Material/Design: Wood or Timber,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.6m (24.9ft),  Curb-To-Curb Width: 8.3m (27.2ft),  Out-to-Out Width: 8.9m (29.2ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Poor,  Channel: Satisfactory,  Operating Rating: 13.6 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 8.1 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: High priority of replacement,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2021,  Bridge Improvement Cost: $173,000,  Roadway Improvement Cost: $34,000,  Total Project Cost: $290,000 ( Estimate for 2017),  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 53C0981,  Location: 0.3MI W/O TOPANGA CYN BL (Lat: 34.092964,  Lng: -118.609061),  Route carried "on" structure: County highway ,  Year Built: 1937,  Year Reconstructed: 1963,  Status: Open,  Structure Length: 1.62m (5.31ft),  Average Daily Traffic: 2,712 (year 2012),  Average Future Daily Traffic: 2,983 (year 2041),  Features Intersected: OLD TOPANGA CRK,  Facility Carried by Structure: OLD TPNG CN RD E/C
Minimum Vertical Clearance: 30.47m (99.97ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.0m (23.0ft),  Skew: 4 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 14.6m (47.9ft),  Curb-To-Curb Width: 8.6m (28.2ft),  Out-to-Out Width: 9.6m (31.5ft)

Condition: Deck: Good,  Superstructure: Fair,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 35.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 21.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Other Special Inspection Frequency: Every 48 months,  Inspection Date: March 2021,  Other Special Inspection Date: December 2021,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 53C0995,  Location: 0.4MI W/O TOPANGA CYN BL (Lat: 34.099197,  Lng: -118.605181),  Route carried "on" structure: County highway ,  Year Built: 1942,  Year Reconstructed: 1966,  Status: Open,  Structure Length: 1.22m (4.00ft),  Average Daily Traffic: 204 (year 2012),  Average Future Daily Traffic: 204 (year 2041),  Design Load: H 20,  Features Intersected: GREENLEAF CYN CRK,  Facility Carried by Structure: GREENLEAF CYN RD
Minimum Vertical Clearance: 30.47m (99.97ft),  Kilometerpoint: 0.000,  Lanes on structure: 1,  Owner: County Highway Agency,  Approaching Roadway Width: 4.0m (13.1ft),  Material/Design: Wood or Timber,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 4.0m (13.1ft),  Curb-To-Curb Width: 3.6m (11.8ft),  Out-to-Out Width: 4.0m (13.1ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Fair,  Operating Rating: 42.4 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 30.8 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: April 2021,  Critical Feature Inspection Date: April 2020,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 53C1023,  Location: 25FT W/O TOPANGA CYN BLVD (Lat: 34.091231,  Lng: -118.602117),  Route carried "on" structure: County highway ,  Year Built: 1953,  Status: Open,  Structure Length: 1.70m (5.58ft),  Average Daily Traffic: 765 (year 2012),  Average Future Daily Traffic: 842 (year 2041),  Design Load: H 20,  Features Intersected: GARAPITO CRK,  Facility Carried by Structure: TOPANGA SCHOOL RD
Minimum Vertical Clearance: 30.47m (99.97ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: Local Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 14.9m (48.9ft),  Curb or Sidewalk Widths: Left: 1.6m (5.2ft),  Right: 1.6m (5.2ft),  Curb-To-Curb Width: 7.9m (25.9ft),  Out-to-Out Width: 11.5m (37.7ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Good,  Channel: Poor,  Operating Rating: 69.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 41.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2021,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 53C1525,  Location: 50FT W/O TOPANGA CYN BLVD (Lat: 34.094828,  Lng: -118.601986),  Route carried "on" structure: County highway ,  Year Built: 1968,  Status: Open,  Structure Length: 1.77m (5.81ft),  Average Daily Traffic: 306 (year 2012),  Average Future Daily Traffic: 306 (year 2039),  Design Load: H 20,  Features Intersected: TOPANGA CYN CRK,  Facility Carried by Structure: GREENLEAF CYN RD
Minimum Vertical Clearance: 30.47m (99.97ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 8.5m (27.9ft),  Curb-To-Curb Width: 8.9m (29.2ft),  Out-to-Out Width: 9.1m (29.9ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Satisfactory,  Channel: Excellent,  Operating Rating: 59.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 35.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: April 2019,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Epoxy Overlay
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