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


  • National Bridge Inventory (NBI) Statistics
  • 11Number of bridges
  • 105ft / 32.0mTotal length
  • $705,000Total costs
  • 48,637Total average daily traffic
  • 2,494Total average daily truck traffic
  • 81,572Total future (year 2037) average daily traffic
  • National Bridge Inventory (NBI) Registered Bridges for Lower Lake
  • No street view available for this location

New bridges in Lower Lake, CA - historical statistics
  • New bridges - historical statistics
  • 11950-1959
  • 31960-1969
  • 21980-1989
  • 41990-1999
  • 12000-2009
Average Bridge Daily Traffic in Lower Lake, CA
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 22.2%Good
  • 66.7%Fair
  • 11.1%Poor
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 50.0%Good
  • 10.0%Satisfactory
  • 40.0%Fair
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 70.0%Good
  • 10.0%Satisfactory
  • 20.0%Fair
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 18.2%Excellent
  • 36.4%Very good
  • 18.2%Good
  • 27.3%Satisfactory
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Structure Number: 14 0054,  Location: 01-LAK-053-0.02 (Lat: 38.910375,  Lng: -122.612108),  Route carried "on" structure: State highway 53,  Year Built: 1952,  Year Reconstructed: 1997,  Status: Open,  Structure Length: 1.08m (3.54ft),  Average Daily Traffic: 16,500 (year 2009),  Truck Traffic: 5%,  Average Future Daily Traffic: 27,567 (year 2040),  Design Load: H 20,  Features Intersected: SEIGLER CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.020,  Lanes on structure: 6,  Base Highway Network: Yes (,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 27.4m (89.9ft),  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 10.5m (34.4ft),  Curb or Sidewalk Widths: Left: 1.8m (5.9ft),  Right: 1.8m (5.9ft),  Curb-To-Curb Width: 27.4m (89.9ft),  Out-to-Out Width: 31.7m (104.0ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Good,  Channel: Very good,  Operating Rating: 58.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 35.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 1.07m (3.51ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: October 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 14 0058,  Location: 01-LAK-029-20.37 (Lat: 38.910239,  Lng: -122.613497),  Route carried "on" structure: State highway 29,  Year Built: 1991,  Status: Open,  Structure Length: 2.23m (7.32ft),  Average Daily Traffic: 10,600 (year 2009),  Truck Traffic: 6%,  Average Future Daily Traffic: 20,078 (year 2042),  Design Load: HS 20+Mod,  Features Intersected: SEIGLER CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 20.370,  Lanes on structure: 4,  Base Highway Network: Yes (,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 18.9m (62.0ft),  Skew: 3 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 21.7m (71.2ft),  Curb-To-Curb Width: 17.8m (58.4ft),  Out-to-Out Width: 18.9m (62.0ft)

Condition: Deck: Poor,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Excellent,  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: 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,  Length Of Structure Improvement: 2.23m (7.32ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: October 2020,  Bridge Improvement Cost: $420,000,  Roadway Improvement Cost: $84,000,  Total Project Cost: $705,000 ( Estimate for 2019),  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 14 0078L,  Location: 01-LAK-053-1.10 (Lat: 38.925028,  Lng: -122.614619),  Route carried "on" structure: State highway 53,  Year Built: 1997,  Status: Open,  Structure Length: 6.20m (20.34ft),  Average Daily Traffic: 8,500 (year 2009),  Truck Traffic: 6%,  Average Future Daily Traffic: 13,783 (year 2040),  Design Load: HS 20+Mod,  Features Intersected: CACHE CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.100,  Lanes on structure: 2,  Base Highway Network: Yes (,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 11.9m (39.0ft),  Skew: 3 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 61.1m (200.5ft),  Curb-To-Curb Width: 11.9m (39.0ft),  Out-to-Out Width: 13.0m (42.7ft)

Condition: Deck: Fair,  Superstructure: Fair,  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: Somewhat better than minimum adequacy,  Deck Geometry: Better than 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 2020,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 14 0078R,  Location: 01-LAK-053-1.00 (Lat: 38.925003,  Lng: -122.614350),  Route carried "on" structure: State highway 53,  Year Built: 1997,  Status: Open,  Structure Length: 6.57m (21.56ft),  Average Daily Traffic: 8,250 (year 2009),  Truck Traffic: 5%,  Average Future Daily Traffic: 13,783 (year 2040),  Design Load: HS 20+Mod,  Features Intersected: CACHE CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.000,  Lanes on structure: 2,  Base Highway Network: Yes (,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 11.9m (39.0ft),  Skew: 3 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 64.8m (212.6ft),  Curb-To-Curb Width: 11.9m (39.0ft),  Out-to-Out Width: 13.0m (42.7ft)

Condition: Deck: Fair,  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: Better than 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 2020,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 14C0006,  Location: 1.0 MI E SR 29 & SR 53 (Lat: 38.907942,  Lng: -122.594764),  Route carried "on" structure: County highway ,  Year Built: 1965,  Status: Open,  Structure Length: 1.68m (5.51ft),  Average Daily Traffic: 1,800 (year 2011),  Truck Traffic: 2%,  Average Future Daily Traffic: 2,047 (year 2041),  Features Intersected: COPSEY CREEK,  Facility Carried by Structure: MORGAN VALLEY 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),  Skew: 3 degrees,  Material/Design: Steel,  Design/Construction: Arch - Deck,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 16.8m (55.1ft)

Condition: Superstructure: Good,  Substructure: Fair,  Channel: Good,  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,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: November 2021
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Structure Number: 14C0024,  Location: 0.03 MI S/O DAM ROAD (Lat: 38.925314,  Lng: -122.611619),  Route carried "on" structure: Business County highway ,  Year Built: 1987,  Status: Open,  Structure Length: 4.11m (13.48ft),  Average Daily Traffic: 1,700 (year 2011),  Truck Traffic: 2%,  Average Future Daily Traffic: 2,359 (year 2043),  Design Load: HS 20+Mod,  Features Intersected: CACHE CREEK,  Facility Carried by Structure: LAKE ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 12.0m (39.4ft),  Skew: 1 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 40.4m (132.5ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 1.5m (4.9ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 13.3m (43.6ft)

Condition: Deck: Fair,  Superstructure: Good,  Substructure: Good,  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: Better than present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: November 2021,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 14C0039,  Location: S SR 29 IN LOWER LAKE (Lat: 38.909094,  Lng: -122.616658),  Route carried "on" structure: County highway ,  Year Built: 1966,  Status: Open,  Structure Length: 2.34m (7.68ft),  Average Daily Traffic: 200 (year 2006),  Truck Traffic: 2%,  Average Future Daily Traffic: 337 (year 2043),  Design Load: HS 20,  Features Intersected: SEIGLER CREEK,  Facility Carried by Structure: BELL PARK AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 9 degrees,  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 9.1m (29.9ft),  Curb or Sidewalk Widths: Left: 0.6m (2.0ft),  Right: 0.6m (2.0ft),  Curb-To-Curb Width: 8.5m (27.9ft),  Out-to-Out Width: 10.4m (34.1ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 59.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 35.6 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: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 24 months,  Inspection Date: November 2021,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 14C0093,  Location: 0.05 MI W QUARTERHORSE LN (Lat: 38.914214,  Lng: -122.593711),  Route carried "on" structure: County highway ,  Year Built: 1965,  Status: Open,  Structure Length: 2.41m (7.91ft),  Average Daily Traffic: 200 (year 2006),  Truck Traffic: 3%,  Average Future Daily Traffic: 331 (year 2043),  Features Intersected: COPSEY CREEK,  Facility Carried by Structure: COPSEY CREEK WAY
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.6m (28.2ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 7.9m (25.9ft),  Curb-To-Curb Width: 8.5m (27.9ft),  Out-to-Out Width: 8.6m (28.2ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Fair,  Channel: Satisfactory,  Operating Rating: 37.9 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 22.7 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 24 months,  Inspection Date: November 2021,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 14C0094,  Location: 0.1 MI E OF SR 53 (Lat: 38.913636,  Lng: -122.610150),  Route carried "on" structure: County highway ,  Year Built: 1987,  Status: Open,  Structure Length: 1.30m (4.27ft),  Average Daily Traffic: 300 (year 2006),  Truck Traffic: 2%,  Average Future Daily Traffic: 508 (year 2037),  Features Intersected: SEIGLER CANYON CREEK,  Facility Carried by Structure: JESSIE ST
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.9m (32.5ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 4.2m (13.8ft),  Curb-To-Curb Width: 9.8m (32.2ft),  Out-to-Out Width: 10.4m (34.1ft)

Condition: Channel: Very good,  Culverts: Satisfactory,  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: Equal to present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: November 2019,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 14C0117,  Location: 0.3 MI EAST OF SR 29 (Lat: 38.888647,  Lng: -122.597697),  Route carried "on" structure: County highway ,  Year Built: 1995,  Status: Open,  Structure Length: 3.11m (10.20ft),  Average Daily Traffic: 512 (year 2008),  Truck Traffic: 5%,  Average Future Daily Traffic: 651 (year 2038),  Design Load: HS 20+Mod,  Features Intersected: COPSEY CREEK,  Facility Carried by Structure: SPRUCE GROVE ROAD
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: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 10.4m (34.1ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 7.8m (25.6ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Satisfactory,  Operating Rating: 68.7 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: Equal to present minimum criteria,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 3.11m (10.20ft),  Designated Inspection Frequency: Every 48 months,  Inspection Date: November 2019,  Deck Structure Type: Corrugated Steel,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 14C0121,  Location: AT SEIGLER CYN RD (Lat: 38.903214,  Lng: -122.639233),  Route carried "on" structure: County highway ,  Year Built: 2007,  Status: Open,  Structure Length: 0.94m (3.08ft),  Average Daily Traffic: 75 (year 2006),  Average Future Daily Traffic: 128 (year 2037),  Design Load: HS 20,  Features Intersected: SEIGLER CANYON CREEK,  Facility Carried by Structure: PERINI ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.5m (21.3ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 8.8m (28.9ft),  Curb-To-Curb Width: 7.6m (24.9ft),  Out-to-Out Width: 7.9m (25.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Excellent,  Operating Rating: 62.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 37.3 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: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: November 2019,  Deck Structure Type: Corrugated Steel,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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