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


  • National Bridge Inventory (NBI) Statistics
  • 10Number of bridges
  • 52ft / 16.3mTotal length
  • 14,417Total average daily traffic
  • 771Total average daily truck traffic
  • 22,178Total future (year 2040) average daily traffic
  • National Bridge Inventory (NBI) Registered Bridges for Trowbridge
  • No street view available for this location

New bridges in Trowbridge, CA - historical statistics
  • New bridges - historical statistics
  • 11920-1929
  • 51930-1939
  • 11960-1969
  • 11980-1989
  • 12000-2009
  • 12010-2019
Reconstructed bridges in Trowbridge, CA - Historical Statistics
  • Reconstructed bridges - Historical Statistics
  • 11950-1959
  • 21960-1969
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 88.9%Good
  • 11.1%Satisfactory
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 70.0%Good
  • 10.0%Satisfactory
  • 20.0%Fair
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 40.0%Good
  • 60.0%Fair
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 10.0%Very good
  • 20.0%Good
  • 40.0%Satisfactory
  • 20.0%Fair
  • 10.0%Poor
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Structure Number: 18C0068,  Location: 2 MI N OF HOWSLEY RD (Lat: 38.857472,  Lng: -121.488444),  Route carried "on" structure: County highway ,  Year Built: 1938,  Year Reconstructed: 1950,  Status: Open,  Structure Length: 2.35m (7.71ft),  Average Daily Traffic: 2,136 (year 2015),  Truck Traffic: 4%,  Average Future Daily Traffic: 2,611 (year 2041),  Features Intersected: AUBURN RAVINE,  Facility Carried by Structure: PLEASANT GROVE RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Skew: 4 degrees,  Material/Design: Concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 5.8m (19.0ft),  Curb-To-Curb Width: 8.7m (28.5ft),  Out-to-Out Width: 8.7m (28.5ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 40.5 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 24.3 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: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: Febuary 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 18C0069,  Location: 0.2 MI N/O STRIPLIN RD (Lat: 38.874214,  Lng: -121.487906),  Route carried "on" structure: County highway ,  Year Built: 1966,  Status: Open,  Structure Length: 1.62m (5.31ft),  Average Daily Traffic: 2,083 (year 2015),  Truck Traffic: 5%,  Average Future Daily Traffic: 2,601 (year 2040),  Features Intersected: NO NAME SLOUGH,  Facility Carried by Structure: PLEASANT GROVE RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Material/Design: Concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 7.9m (25.9ft),  Curb-To-Curb Width: 9.6m (31.5ft),  Out-to-Out Width: 9.8m (32.2ft)

Condition: Deck: Good,  Superstructure: Fair,  Substructure: Fair,  Channel: Fair,  Operating Rating: 68.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 41.1 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 desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 18C007,  Location: 11.2 MI N SAC CO LINE (Lat: 38.884825,  Lng: -121.487858),  Route carried "on" structure: County highway ,  Year Built: 1988,  Status: Open,  Structure Length: 1.34m (4.40ft),  Average Daily Traffic: 2,009 (year 2015),  Truck Traffic: 5%,  Average Future Daily Traffic: 3,133 (year 2041),  Design Load: HS 20+Mod,  Features Intersected: MARKHAM RAVINE,  Facility Carried by Structure: PLEASANT GROVE RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 6.4m (21.0ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 11.6m (38.1ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Fair,  Channel: 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: 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 desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: Febuary 2021,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 18C0071,  Location: 11.5 MI N/O RIEGO RD (Lat: 38.905908,  Lng: -121.487767),  Route carried "on" structure: County highway ,  Year Built: 1937,  Year Reconstructed: 1960,  Status: Open,  Structure Length: 2.29m (7.51ft),  Average Daily Traffic: 2,296 (year 2015),  Truck Traffic: 5%,  Average Future Daily Traffic: 1,738 (year 2040),  Features Intersected: BUNKHAM SLOUGH,  Facility Carried by Structure: PLEASANT GROVE RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.0m (23.0ft),  Material/Design: Concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 5.5m (18.0ft),  Curb-To-Curb Width: 8.5m (27.9ft),  Out-to-Out Width: 8.7m (28.5ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 40.5 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 24.3 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 18C0072,  Location: 12.1 MI N/O RIEGO RD (Lat: 38.915681,  Lng: -121.487731),  Route carried "on" structure: County highway ,  Year Built: 1937,  Year Reconstructed: 1960,  Status: Open,  Structure Length: 1.31m (4.30ft),  Average Daily Traffic: 1,487 (year 2015),  Truck Traffic: 5%,  Average Future Daily Traffic: 1,738 (year 2040),  Features Intersected: COON CREEK,  Facility Carried by Structure: PLEASANT GROVE RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 6.4m (21.0ft),  Curb-To-Curb Width: 8.2m (26.9ft),  Out-to-Out Width: 8.4m (27.6ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 40.5 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 24.3 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: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 18C0074,  Location: 1 MI W/O PLEASANT GRV RD (Lat: 38.907253,  Lng: -121.504803),  Route carried "on" structure: County highway ,  Year Built: 1925,  Status: Open,  Structure Length: 2.23m (7.32ft),  Average Daily Traffic: 405 (year 2015),  Truck Traffic: 6%,  Average Future Daily Traffic: 653 (year 2040),  Features Intersected: COON CREEK OVERFLOW,  Facility Carried by Structure: NICOLAUS AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Skew: 2 degrees,  Material/Design: Concrete continuous,  Design/Construction: Girder and Floorbeam System,  Number Of Spans In Main Unit: 1,  Number Of Approach Spans: 2,  Length of Maximum Span: 11.6m (38.1ft),  Curb-To-Curb Width: 6.0m (19.7ft),  Out-to-Out Width: 7.1m (23.3ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 25.3 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 15.2 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Meets minimum limits,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 18C0075,  Location: 4.85 MI E OF SH 99 (Lat: 38.907378,  Lng: -121.506111),  Route carried "on" structure: County highway ,  Year Built: 1930,  Status: Open,  Structure Length: 1.28m (4.20ft),  Average Daily Traffic: 405 (year 2015),  Truck Traffic: 6%,  Average Future Daily Traffic: 653 (year 2040),  Features Intersected: COON CREEK,  Facility Carried by Structure: NICOLAUS AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  Skew: 2 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 6.1m (20.0ft),  Curb-To-Curb Width: 6.9m (22.6ft),  Out-to-Out Width: 7.3m (24.0ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Fair,  Channel: Good,  Operating Rating: 27.9 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 16.8 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: Meets minimum limits,  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 19C0096,  Location: 1.5 MI N OF NICOLAUS RD (Lat: 38.917625,  Lng: -121.451872),  Route carried "on" structure: County highway ,  Year Built: 1938,  Status: Posted for load,  Structure Length: 1.70m (5.58ft),  Average Daily Traffic: 95 (year 2012),  Average Future Daily Traffic: 160 (year 2041),  Features Intersected: COON CREEK,  Facility Carried by Structure: BREWER RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 1,  Owner: County Highway Agency,  Approaching Roadway Width: 4.3m (14.1ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 16.2m (53.1ft),  Curb-To-Curb Width: 4.5m (14.8ft),  Out-to-Out Width: 4.9m (16.1ft)

Condition: Deck: Good,  Superstructure: Fair,  Substructure: Fair,  Channel: Poor,  Operating Rating: 24.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 14.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Meets minimum limits,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Meets minimum limits,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 0.1 - 9.9% below),  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2021,  Deck Structure Type: Wood or Timber
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Structure Number: 19C0228,  Location: 4.8 MI WEST OF DOWD RD (Lat: 38.896908,  Lng: -121.463617),  Route carried "on" structure: County highway ,  Year Built: 2006,  Status: Open,  Structure Length: 0.85m (2.79ft),  Average Daily Traffic: 3,030 (year 2017),  Truck Traffic: 8%,  Average Future Daily Traffic: 4,500 (year 2041),  Design Load: HS 20,  Features Intersected: AIRPORT SLOUGH,  Facility Carried by Structure: NICOLAUS RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.7m (31.8ft),  Material/Design: Concrete,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 8.5m (27.9ft),  Curb-To-Curb Width: 10.0m (32.8ft),  Out-to-Out Width: 10.7m (35.1ft)

Condition: Superstructure: Good,  Substructure: Good,  Channel: Fair,  Operating Rating: 54.1 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 32.4 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2021
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Structure Number: 19C0248,  Location: 0.6 MI S OF NICOLAUS ROAD (Lat: 38.888608,  Lng: -121.451706),  Route carried "on" structure: County highway ,  Year Built: 2013,  Status: Open,  Structure Length: 1.31m (4.30ft),  Average Daily Traffic: 471 (year 2007),  Truck Traffic: 1%,  Average Future Daily Traffic: 4,391 (year 2043),  Design Load: HL 93,  Features Intersected: MARKHAM RAVINE,  Facility Carried by Structure: BREWER ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.8m (32.2ft),  Skew: 1 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 10.7m (35.1ft),  Curb or Sidewalk Widths: Left: 0.5m (1.6ft),  Right: 0.5m (1.6ft),  Curb-To-Curb Width: 9.8m (32.2ft),  Out-to-Out Width: 10.8m (35.4ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Very good,  Operating Rating: 42.1 metric tons,  Method Used To Determine Operating Rating: Assigned ratings based on Load and Resistance Factor Design (LRFD) reported by rating factor (RF) using HL93 loadings,  Inventory Rating: 32.4 metric tons,  Method Used To Determine Inventory Rating: Assigned ratings based on Load and Resistance Factor Design (LRFD) reported by rating factor (RF) using HL93 loadings,  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 48 months,  Inspection Date: March 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete
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