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


  • National Bridge Inventory (NBI) Statistics
  • 12Number of bridges
  • 105ft / 32mTotal length
  • $772,000Total costs
  • 5,555Total average daily traffic
  • 582Total average daily truck traffic
  • 8,969Total future (year 2027) average daily traffic
  • National Bridge Inventory (NBI) Registered Bridges for French Gulch
  • No street view available for this location

New bridges in French Gulch, CA - historical statistics
  • New bridges - historical statistics
  • 11920-1929
  • 21930-1939
  • 21940-1949
  • 21960-1969
  • 11980-1989
  • 31990-1999
  • 12010-2018
Reconstructed bridges in French Gulch, CA - Historical Statistics
  • Reconstructed bridges - Historical Statistics
  • 11960-1969
  • 31970-1979
Average Bridge Daily Traffic in French Gulch, CA
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 60.0%Good
  • 20.0%Satisfactory
  • 20.0%Fair
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 70.0%Good
  • 20.0%Satisfactory
  • 10.0%Fair
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 10.0%Very good
  • 60.0%Good
  • 30.0%Fair
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 8.3%Excellent
  • 25.0%Very good
  • 8.3%Good
  • 25.0%Satisfactory
  • 25.0%Fair
  • 8.3%Poor
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 50.0%Satisfactory
  • 50.0%Poor
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Structure Number: 6 0036,  Location: 02-SHA-299-8.73 (Lat: 40.664486,  Lng: -122.635439),  Route carried "on" structure: State highway 299,  Year Built: 1988,  Status: Open,  Structure Length: 6.28m (20.60ft),  Average Daily Traffic: 3,800 (year 2009),  Truck Traffic: 13%,  Average Future Daily Traffic: 5,407 (year 2033),  Design Load: HS 20+Mod,  Features Intersected: CLEAR CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.873,  Lanes on structure: 2,  Base Highway Network: Yes (Inventory Route: 2,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 122.0m (400.3ft),  Skew: 10 degrees,  Material/Design: Concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 26.2m (86.0ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 13.3m (43.6ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Excellent,  Operating Rating: 89.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 53.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: October 2016,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 6C02,  Location: AT SR 299 (Lat: 40.669028,  Lng: -122.646447),  Route carried "on" structure: County highway ,  Year Built: 1992,  Status: Open,  Structure Length: 5.43m (17.81ft),  Average Daily Traffic: 250 (year 2014),  Truck Traffic: 10%,  Average Future Daily Traffic: 425 (year 2036),  Design Load: HS 20,  Features Intersected: WILLOW CREEK,  Facility Carried by Structure: CRYSTAL CREEK RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 61.0m (200.1ft),  Skew: 9 degrees,  Material/Design: Concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 24.4m (80.1ft),  Curb-To-Curb Width: 7.4m (24.3ft),  Out-to-Out Width: 8.4m (27.6ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Very good,  Channel: Very good,  Operating Rating: 54.1 metric tons,  Method Used To Determine Operating Rating: Assigned rating based on Load Factor Design (LFD) reported in metric tons,  Inventory Rating: 32.4 metric tons,  Method Used To Determine Inventory Rating: Assigned rating based on Load Factor Design (LFD) reported in metric tons,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: August 2014,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 6C0226,  Location: 1.3 MI N/W TRTY MT RD (Lat: 40.715161,  Lng: -122.628772),  Route carried "on" structure: County highway ,  Year Built: 1935,  Year Reconstructed: 1978,  Status: Open,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 60 (year 2012),  Truck Traffic: 5%,  Average Future Daily Traffic: 209 (year 2034),  Features Intersected: CLINE GULCH,  Facility Carried by Structure: CLINE GULCH ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 1,  Owner: County Highway Agency,  Approaching Roadway Width: 43.0m (141.1ft),  Skew: 2 degrees,  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 0.7m (2.3ft),  Curb-To-Curb Width: 4.6m (15.1ft),  Out-to-Out Width: 4.8m (15.7ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 27.9 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 17.2 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: High priority of corrective action,  Length Of Structure Improvement: 7.60m (24.93ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2016,  Bridge Improvement Cost: $36,000,  Roadway Improvement Cost: $7,000,  Total Project Cost: $60,000 ( Estimate for 2017),  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 6C0252,  Location: FRENCH GULCH RD (Lat: 40.697544,  Lng: -122.638411),  Route carried "on" structure: County highway ,  Year Built: 1922,  Year Reconstructed: 1965,  Status: Open,  Structure Length: 0.82m (2.69ft),  Average Daily Traffic: 742 (year 2012),  Truck Traffic: 5%,  Average Future Daily Traffic: 1,278 (year 2034),  Features Intersected: FRENCH GULCH,  Facility Carried by Structure: TRINITY MTN RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 76.0m (249.3ft),  Material/Design: Concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.6m (24.9ft),  Curb-To-Curb Width: 6.8m (22.3ft),  Out-to-Out Width: 7.4m (24.3ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Fair,  Operating Rating: 78.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 47.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2016,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 6C0259,  Location: 100' E MAIN ST IN FR GUL (Lat: 40.704903,  Lng: -122.636850),  Route carried "on" structure: County highway ,  Year Built: 1968,  Status: Open,  Structure Length: 3.44m (11.29ft),  Average Daily Traffic: 133 (year 2012),  Truck Traffic: 5%,  Average Future Daily Traffic: 450 (year 2034),  Design Load: HS 20,  Features Intersected: CLEAR CREEK,  Facility Carried by Structure: CLINE GULCH RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 85.0m (278.9ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 18.9m (62.0ft),  Curb or Sidewalk Widths: Left: 1.7m (5.6ft),  Right: 0.0m,  Curb-To-Curb Width: 8.5m (27.9ft),  Out-to-Out Width: 10.7m (35.1ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 75.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 45.4 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2016,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 6C0284,  Location: 2.0 MI NW/O TRINITY MTN R (Lat: 40.710592,  Lng: -122.668133),  Route carried "on" structure: County highway ,  Year Built: 1965,  Status: Open,  Structure Length: 0.76m (2.49ft),  Average Daily Traffic: 60 (year 2013),  Truck Traffic: 5%,  Average Future Daily Traffic: 120 (year 2034),  Features Intersected: FRENCH GULCH,  Facility Carried by Structure: FRENCH GULCH ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 1,  Owner: County Highway Agency,  Approaching Roadway Width: 37.0m (121.4ft),  Skew: 3 degrees,  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.3m (24.0ft),  Curb-To-Curb Width: 5.6m (18.4ft),  Out-to-Out Width: 5.8m (19.0ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Fair,  Channel: Fair,  Operating Rating: 28.8 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 17.2 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 7.60m (24.93ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2016,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 6C0285,  Location: 2.3 MI NW/O TRINITY MT RD (Lat: 40.715211,  Lng: -122.670603),  Route carried "on" structure: County highway ,  Year Built: 1935,  Status: Open,  Structure Length: 0.79m (2.59ft),  Average Daily Traffic: 60 (year 2013),  Truck Traffic: 5%,  Average Future Daily Traffic: 61 (year 2034),  Features Intersected: FRENCH GULCH,  Facility Carried by Structure: FRENCH GULCH ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 1,  Owner: County Highway Agency,  Approaching Roadway Width: 43.0m (141.1ft),  Skew: 4 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.7m (12.1ft),  Curb-To-Curb Width: 6.2m (20.3ft),  Out-to-Out Width: 6.8m (22.3ft)

Condition: Channel: Poor,  Culverts: Satisfactory,  Operating Rating: 26.9 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 16.2 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2016
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Structure Number: 6C0375,  Location: 100' E/O TRINITY RD (Lat: 40.754844,  Lng: -122.616944),  Route carried "on" structure: County highway ,  Year Built: 2011,  Status: Open,  Structure Length: 3.78m (12.40ft),  Average Daily Traffic: 120 (year 2013),  Truck Traffic: 5%,  Average Future Daily Traffic: 319 (year 2038),  Design Load: HS 20,  Features Intersected: CLEAR CREEK,  Facility Carried by Structure: E FORK RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 78.0m (255.9ft),  Material/Design: Concrete,  Design/Construction: Box Beam or Girders - Single/Spread,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 37.8m (124.0ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 7.8m (25.6ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Very good,  Operating Rating: 54.1 metric tons,  Method Used To Determine Operating Rating: Assigned rating based on Load Factor Design (LFD) reported in metric tons,  Inventory Rating: 32.4 metric tons,  Method Used To Determine Inventory Rating: Assigned rating based on Load Factor Design (LFD) reported in metric tons,  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 24 months,  Inspection Date: August 2016,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 8750005S,  Location: 0.2 miles N of Hwy 299 (M (Lat: 40.668194,  Lng: -122.633861),  Route carried "on" structure: Alternate Federal lands road 410,  Year Built: 1940,  Year Reconstructed: 1977,  Status: Open,  Structure Length: 3.05m (10.01ft),  Average Daily Traffic: 30 (year 2013),  Average Future Daily Traffic: 100 (year 2033),  Features Intersected: UPPER CLEAR CREEK,  Facility Carried by Structure: ROUTE 11
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.002,  Lanes on structure: 1,  Owner: National Park Service,  Approaching Roadway Width: 61.0m (200.1ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 18.3m (60.0ft),  Curb-To-Curb Width: 3.7m (12.1ft),  Out-to-Out Width: 4.3m (14.1ft)

Condition: Deck: Fair,  Superstructure: Good,  Substructure: Fair,  Channel: Good,  Operating Rating: 17.2 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 12.7 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Meets minimum limits,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2017,  Bridge Improvement Cost: $247,000,  Roadway Improvement Cost: $25,000,  Total Project Cost: $371,000 ( Estimate for 2013),  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 8750006S,  Location: 0.1 miles S of Hwy 299 (M (Lat: 40.663611,  Lng: -122.636250),  Route carried "on" structure: ServiceFederal lands road 52,  Year Built: 1940,  Year Reconstructed: 1977,  Status: Posted for load,  Structure Length: 1.01m (3.31ft),  Average Daily Traffic: 50 (year 2013),  Average Future Daily Traffic: 100 (year 2033),  Features Intersected: CRYSTAL CREEK,  Facility Carried by Structure: SERVICE ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 1,  Owner: National Park Service,  Approaching Roadway Width: 61.0m (200.1ft),  Skew: 1 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 9.4m (30.8ft),  Curb-To-Curb Width: 3.7m (12.1ft),  Out-to-Out Width: 4.1m (13.5ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Fair,  Operating Rating: 17.2 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 12.7 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Meets minimum limits,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2017,  Bridge Improvement Cost: $50,000,  Roadway Improvement Cost: $5,000,  Total Project Cost: $75,000 ( Estimate for 2013),  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 8750014S,  Location: 3.5 miles south of Hwy 29 (Lat: 40.640361,  Lng: -122.598500),  Route carried "on" structure: ServiceFederal lands road ,  Year Built: 1996,  Status: Open,  Structure Length: 0.94m (3.08ft),  Average Future Daily Traffic: 100 (year 2027),  Features Intersected: BOULDER CREEK,  Facility Carried by Structure: SOUTH SHORE DRIVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: National Park Service,  Approaching Roadway Width: 52.0m (170.6ft),  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 9.4m (30.8ft)

Condition: Channel: Satisfactory,  Culverts: Poor,  Operating Rating: 2.6 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 15.6 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Meets minimum limits,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2017,  Bridge Improvement Cost: $99,000,  Roadway Improvement Cost: $10,000,  Total Project Cost: $149,000 ( Estimate for 2013)
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Structure Number: 8750016P,  Location: 50 feet south of junction (Lat: 40.669750,  Lng: -122.646806),  Route carried "on" structure: Federal lands road ,  Year Built: 1992,  Status: Open,  Structure Length: 5.43m (17.81ft),  Average Daily Traffic: 250 (year 2013),  Truck Traffic: 2%,  Average Future Daily Traffic: 400 (year 2033),  Design Load: HS 20,  Features Intersected: WILLOW CREEK,  Facility Carried by Structure: CRYSTAL CREEK ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.008,  Lanes on structure: 2,  Owner: National Park Service,  Approaching Roadway Width: 73.0m (239.5ft),  Skew: 2 degrees,  Material/Design: Concrete continuous,  Design/Construction: Box Beam or Girders - Single/Spread,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 24.4m (80.1ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 8.4m (27.6ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Very good,  Operating Rating: 54.5 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2017,  Bridge Improvement Cost: $78,000,  Roadway Improvement Cost: $8,000,  Total Project Cost: $117,000,  Deck Structure Type: Concrete Cast-file-Place
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