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


  • National Bridge Inventory (NBI) Statistics
  • 15Number of bridges
  • 171ft / 51.5mTotal length
  • 52,810Total average daily traffic
  • 5,170Total average daily truck traffic
  • National Bridge Inventory (NBI) Registered Bridges for Lake Isabella
  • No street view available for this location

New bridges in Lake Isabella, CA - historical statistics
  • New bridges - historical statistics
  • 11940-1949
  • 11950-1959
  • 21960-1969
  • 91970-1979
  • 11990-1999
  • 12000-2009
Average Bridge Daily Traffic in Lake Isabella, CA
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 81.8%Good
  • 18.2%Fair
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 22.2%Excellent
  • 22.2%Very good
  • 44.4%Satisfactory
  • 11.1%Fair
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 50.0%Good
  • 50.0%Satisfactory
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Structure Number: 50 0046,  Location: 06-KER-178-R44.10 (Lat: 35.640247,  Lng: -118.464292),  Route carried "on" structure: State highway 178,  Year Built: 1948,  Year Reconstructed: 1974,  Status: Open,  Structure Length: 0.73m (2.40ft),  Average Daily Traffic: 4,200 (year 2009),  Truck Traffic: 9%,  Average Future Daily Traffic: 8,686 (year 2037),  Features Intersected: ISABELLA DRAIN
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 44.100,  Lanes on structure: 2,  Base Highway Network: Yes (Inventory Route: 1,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 17.1m (56.1ft),  Skew: 2 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.7m (12.1ft)

Condition: Channel: Satisfactory,  Culverts: Good,  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,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: November 2018
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Structure Number: 50 0148,  Location: 06-KER-155-70.08 (Lat: 35.640256,  Lng: -118.482664),  Route carried "on" structure: State highway 155,  Year Built: 1951,  Status: Open,  Structure Length: 6.10m (20.01ft),  Average Daily Traffic: 6,600 (year 2009),  Truck Traffic: 12%,  Average Future Daily Traffic: 14,607 (year 2037),  Design Load: HS 20,  Features Intersected: KERN RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 70.080,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Skew: 3 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 22.9m (75.1ft),  Curb-To-Curb Width: 8.2m (26.9ft),  Out-to-Out Width: 9.2m (30.2ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Very good,  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: Better than present minimum criteria,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 48 months,  Inspection Date: November 2018,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 50 0206,  Location: 06-KER-155-R68.69 (Lat: 35.657678,  Lng: -118.484361),  Route carried "on" structure: State highway 155,  Year Built: 1994,  Status: Open,  Structure Length: 8.44m (27.69ft),  Average Daily Traffic: 6,600 (year 2009),  Truck Traffic: 12%,  Average Future Daily Traffic: 14,607 (year 2037),  Design Load: HS 20+Mod,  Features Intersected: FRENCH GULCH
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 68.690,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Material/Design: Prestressed concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 33.5m (109.9ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 13.2m (43.3ft)

Condition: Deck: Fair,  Superstructure: Good,  Substructure: Good,  Channel: Fair,  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: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 24 months,  Inspection Date: December 2020,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 50 0281,  Location: 06-KER-178-R41.16 (Lat: 35.607192,  Lng: -118.496011),  Route carried "on" structure: State highway 178,  Year Built: 1971,  Status: Open,  Structure Length: 10.85m (35.60ft),  Average Daily Traffic: 4,200 (year 2009),  Truck Traffic: 8%,  Average Future Daily Traffic: 8,412 (year 2037),  Design Load: HS 20+Mod,  Features Intersected: KERN RIVER
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 41.160,  Lanes on structure: 4,  Base Highway Network: Yes (Inventory Route: 1,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 18.3m (60.0ft),  Skew: 3 degrees,  Material/Design: Prestressed concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 51.8m (169.9ft),  Curb-To-Curb Width: 18.3m (60.0ft),  Out-to-Out Width: 18.9m (62.0ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Very good,  Operating Rating: 82.6 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 56.1 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  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: December 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric
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Structure Number: 50 0341L,  Location: 06-KER-178-R41.64 (Lat: 35.611692,  Lng: -118.489669),  Route carried "on" structure: State highway 178,  Year Built: 1974,  Status: Open,  Structure Length: 2.87m (9.42ft),  Average Daily Traffic: 2,100 (year 2009),  Truck Traffic: 8%,  Average Future Daily Traffic: 4,206 (year 2036),  Design Load: HS 20,  Features Intersected: ELIZABETH NORRIS ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 41.640,  Lanes on structure: 3,  Lanes under structure: 2,  Base Highway Network: Yes (Inventory Route: 1,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 16.2m (53.1ft),  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: 28.3m (92.8ft),  Curb-To-Curb Width: 15.5m (50.9ft),  Out-to-Out Width: 16.1m (52.8ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 42.8 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 33.0 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: November 2018,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric
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Structure Number: 50 0341R,  Location: 06-KER-178-R41.64 (Lat: 35.611539,  Lng: -118.489486),  Route carried "on" structure: State highway 178,  Year Built: 1974,  Status: Open,  Structure Length: 2.90m (9.51ft),  Average Daily Traffic: 2,100 (year 2009),  Truck Traffic: 8%,  Average Future Daily Traffic: 4,206 (year 2036),  Design Load: HS 20,  Features Intersected: ELIZABETH NORRIS ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 41.640,  Lanes on structure: 2,  Lanes under structure: 2,  Base Highway Network: Yes (Inventory Route: 1,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 11.9m (39.0ft),  Skew: 2 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 28.3m (92.8ft),  Curb-To-Curb Width: 11.9m (39.0ft),  Out-to-Out Width: 12.5m (41.0ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 45.7 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Underclear: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: November 2018,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric
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Structure Number: 50 0357,  Location: 06-KER-178-R39.88 (Lat: 35.598614,  Lng: -118.514489),  Route carried "on" structure: County highway ,  Year Built: 1968,  Status: Open,  Structure Length: 4.57m (14.99ft),  Average Daily Traffic: 5 (year 2012),  Truck Traffic: 20%,  Average Future Daily Traffic: 10 (year 2037),  Design Load: HS 20+Mod,  Features Intersected: STATE ROUTE 178,  Facility Carried by Structure: BOUNDARY FLAT RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Lanes under structure: 4,  Owner: State Highway Agency,  Approaching Roadway Width: 4.0m (13.1ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 44.2m (145.0ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 7.9m (25.9ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 65.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 39.5 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,  Underclear: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: December 2020,  Critical Feature Inspection Date: November 2020,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 50 0398E,  Location: 06-KER-155-R70.98 (Lat: 35.628267,  Lng: -118.478750),  Route carried "on" structure: Ramp State highway 155,  Year Built: 1974,  Status: Open,  Structure Length: 5.49m (18.01ft),  Average Daily Traffic: 6,600 (year 2009),  Truck Traffic: 11%,  Average Future Daily Traffic: 14,607 (year 2037),  Design Load: HS 20,  Features Intersected: STATE ROUTE 178
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 70.980,  Lanes on structure: 4,  Lanes under structure: 4,  Owner: State Highway Agency,  Approaching Roadway Width: 21.0m (68.9ft),  Skew: 20 degrees,  Material/Design: Prestressed concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 27.4m (89.9ft),  Curb or Sidewalk Widths: Left: 1.5m (4.9ft),  Right: 0.0m,  Curb-To-Curb Width: 19.5m (64.0ft),  Out-to-Out Width: 23.1m (75.8ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 45.7 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Superior to present desirable criteria,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: November 2018,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric
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Structure Number: 50 0399L,  Location: 06-KER-178-R43.69 (Lat: 35.636625,  Lng: -118.470228),  Route carried "on" structure: State highway 178,  Year Built: 1974,  Status: Open,  Structure Length: 2.41m (7.91ft),  Average Daily Traffic: 2,100 (year 2009),  Truck Traffic: 9%,  Average Future Daily Traffic: 4,343 (year 2037),  Design Load: HS 20+Mod,  Features Intersected: BOREL CANAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 43.690,  Lanes on structure: 2,  Base Highway Network: Yes (Inventory Route: 1,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 11.9m (39.0ft),  Skew: 3 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 23.5m (77.1ft),  Curb-To-Curb Width: 11.9m (39.0ft),  Out-to-Out Width: 12.5m (41.0ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 46.7 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 27.9 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than 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: December 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric
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Structure Number: 50 0399R,  Location: 06-KER-178-R43.69 (Lat: 35.636369,  Lng: -118.470236),  Route carried "on" structure: State highway 178,  Year Built: 1974,  Status: Open,  Structure Length: 2.44m (8.01ft),  Average Daily Traffic: 2,100 (year 2009),  Truck Traffic: 9%,  Average Future Daily Traffic: 4,343 (year 2037),  Design Load: HS 20+Mod,  Features Intersected: BOREL CANAL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 43.690,  Lanes on structure: 2,  Base Highway Network: Yes (Inventory Route: 1,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 11.9m (39.0ft),  Skew: 3 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 23.8m (78.1ft),  Curb-To-Curb Width: 11.9m (39.0ft),  Out-to-Out Width: 12.5m (41.0ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Satisfactory,  Operating Rating: 46.7 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 28.5 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than 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: December 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric
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Structure Number: 50 0467S,  Location: 06-KER-178-R41.59 (Lat: 35.610647,  Lng: -118.488994),  Route carried "on" structure: Bypass State highway 178,  Year Built: 1974,  Status: Open,  Structure Length: 0.85m (2.79ft),  Average Daily Traffic: 740 (year 2012),  Truck Traffic: 8%,  Average Future Daily Traffic: 900 (year 2037),  Features Intersected: ERSKINE CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 41.590,  Lanes on structure: 1,  Base Highway Network: Yes (Inventory Route: 1,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 2.7m (8.9ft)

Condition: Channel: Satisfactory,  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,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: November 2018
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Structure Number: 50C0093,  Location: EAST OF BARLOW DRIVE (Lat: 35.638172,  Lng: -118.470206),  Route carried "on" structure: County highway ,  Year Built: 1973,  Status: Open,  Structure Length: 1.92m (6.30ft),  Average Daily Traffic: 65 (year 2007),  Average Future Daily Traffic: 107 (year 2038),  Design Load: HS 20,  Features Intersected: BOREL CANAL,  Facility Carried by Structure: EVA DRIVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 9.1m (29.9ft),  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 18.3m (60.0ft),  Curb or Sidewalk Widths: Left: 1.5m (4.9ft),  Right: 0.0m,  Curb-To-Curb Width: 9.2m (30.2ft),  Out-to-Out Width: 11.3m (37.1ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Excellent,  Operating Rating: 40.5 metric tons,  Method Used To Determine Operating Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Inventory Rating: 22.4 metric tons,  Method Used To Determine Inventory Rating: Load and Resistance Factor Rating (LRFR) rating reported by rating factor(RF) method using HL-93 loadings,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 24 months,  Inspection Date: November 2020,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 50C0333,  Location: EAST OF EDNA ST. (Lat: 35.616408,  Lng: -118.469450),  Route carried "on" structure: City street ,  Year Built: 2003,  Status: Open,  Structure Length: 1.95m (6.40ft),  Average Daily Traffic: 7,000 (year 2007),  Truck Traffic: 10%,  Average Future Daily Traffic: 7,805 (year 2040),  Features Intersected: BOREL CANAL,  Facility Carried by Structure: ERSKINE CREEK RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Material/Design: Concrete,  Design/Construction: Tee Beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 18.3m (60.0ft),  Curb or Sidewalk Widths: Left: 2.3m (7.5ft),  Right: 2.3m (7.5ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 16.8m (55.1ft)

Condition: Deck: Fair,  Superstructure: Good,  Substructure: Good,  Channel: Excellent,  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: 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: November 2020,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 50 0357,  Location: 06-KER-178-R39.88 (Lat: 35.598614,  Lng: -118.514489),  Route carried "under" structure: State highway 178,  Year Built: 1968,  Structure Length: 0. m,  Average Daily Traffic: 4,200 (year 2009),  Truck Traffic: 8%,  Features Intersected: STATE ROUTE 178,  Facility Carried by Structure: BOUNDARY FLAT RD
Minimum Vertical Clearance: 8.53m (27.99ft),  Kilometerpoint: 39.880,  Lanes on structure: 2,  Lanes under structure: 4,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 44.2m (145.0ft)

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Structure Number: 50 0398E,  Location: 06-KER-155-R70.98 (Lat: 35.628267,  Lng: -118.478750),  Route carried "under" structure: State highway 178,  Year Built: 1974,  Structure Length: 0. m,  Average Daily Traffic: 4,200 (year 2009),  Truck Traffic: 8%,  Features Intersected: STATE ROUTE 178,  Facility Carried by Structure: STATE ROUTE 155
Minimum Vertical Clearance: 4.98m (16.34ft),  Kilometerpoint: 42.940,  Lanes on structure: 4,  Lanes under structure: 4,  Material/Design: Prestressed concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Length of Maximum Span: 27.4m (89.9ft)

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