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

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Structure Number: 27 0008,  Location: 04-MRN-101-8.47-LKSP (Lat: 37.943333,  Lng: -122.513333),  Route carried "on" structure: US 101,  Year Built: 1957,  Year Reconstructed: 2004,  Status: Open,  Structure Length: 38.56m (126.51ft),  Average Daily Traffic: 162,000 (year 2000),  Truck Traffic: 3%,  Average Future Daily Traffic: 270,152 (year 2029),  Design Load: HS 20,  Features Intersected: CORTE MADERA CR & SFD BL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 8.470,  Lanes on structure: 8,  Lanes under structure: 5,  Base Highway Network: Yes (Inventory Route: 1,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 32.9m (107.9ft),  Skew: 39 degrees,  Navigation Control: Yes ( Vertical Clearance: 6.4m (21.0ft), Horizontal Clearance: 12.2m (40.0ft)),  Material/Design: Concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 12,  Number Of Approach Spans: 1,  Length of Maximum Span: 24.4m (80.1ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 0.6m (2.0ft),  Curb-To-Curb Width: 32.0m (105.0ft),  Out-to-Out Width: 34.0m (111.5ft)

Condition: Deck: Serious,  Superstructure: Good,  Substructure: Good,  Operating Rating: 57.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 33.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Meets minimum limits,  Underclear: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 38.65m (126.80ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 48 months,  Inspection Date: March 2007,  Underwater Inspection Date: January 2008,  Bridge Improvement Cost: $9,183,000,  Roadway Improvement Cost: $918,000,  Total Project Cost: $13,775,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: 27 0008K,  Location: 04-MRN-101-8.47-LKSP (Lat: 37.943333,  Lng: -122.515000),  Route carried "on" structure: Bypass US 101,  Year Built: 1959,  Status: Open,  Structure Length: 50.23m (164.80ft),  Average Daily Traffic: 19,700 (year 1998),  Truck Traffic: 1%,  Average Future Daily Traffic: 21,234 (year 2029),  Design Load: HS 20,  Features Intersected: CORTE MADERA CR & EB SFD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 8.470,  Lanes on structure: 1,  Lanes under structure: 1,  Base Highway Network: Yes (Inventory Route: 1,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 9 degrees,  Navigation Control: Yes ( Vertical Clearance: 6.4m (21.0ft), Horizontal Clearance: 12.2m (40.0ft)),  Material/Design: Concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 15,  Number Of Approach Spans: 6,  Length of Maximum Span: 24.4m (80.1ft),  Curb or Sidewalk Widths: Left: 1.5m (4.9ft),  Right: 0.6m (2.0ft),  Curb-To-Curb Width: 7.3m (24.0ft),  Out-to-Out Width: 11.2m (36.7ft)

Condition: Deck: Fair,  Superstructure: Satisfactory,  Substructure: Good,  Operating Rating: 59.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 36.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: High priority of replacement,  Underclear: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Meets minimum limits,  Length Of Structure Improvement: 50.23m (164.80ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 48 months,  Inspection Date: March 2007,  Underwater Inspection Date: January 2008,  Bridge Improvement Cost: $4,501,000,  Roadway Improvement Cost: $450,000,  Total Project Cost: $6,751,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete

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Structure Number: 27 0008S,  Location: 04-MRN-101-8.47-LKSP (Lat: 37.943333,  Lng: -122.513333),  Route carried "on" structure: Bypass US 101,  Year Built: 1961,  Year Reconstructed: 1975,  Status: Open,  Structure Length: 53.80m (176.51ft),  Average Daily Traffic: 26,000 (year 1998),  Truck Traffic: 1%,  Average Future Daily Traffic: 42,469 (year 2029),  Design Load: HS 20+Mod,  Features Intersected: CORTE MADERA CR & SFD BL
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 8.470,  Lanes on structure: 1,  Lanes under structure: 7,  Base Highway Network: Yes (Inventory Route: 1,  Subroute: 1),  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Skew: 9 degrees,  Navigation Control: Yes ( Vertical Clearance: 6.4m (21.0ft), Horizontal Clearance: 12.2m (40.0ft)),  Material/Design: Concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 17,  Number Of Approach Spans: 2,  Length of Maximum Span: 24.4m (80.1ft),  Curb or Sidewalk Widths: Left: 0.6m (2.0ft),  Right: 1.6m (5.2ft),  Curb-To-Curb Width: 8.5m (27.9ft),  Out-to-Out Width: 10.1m (33.1ft)

Condition: Deck: Serious,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 78.0 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 30.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Meets minimum limits,  Underclear: High priority of corrective action,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 53.80m (176.51ft),  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 48 months,  Inspection Date: March 2007,  Underwater Inspection Date: January 2008,  Bridge Improvement Cost: $4,089,000,  Roadway Improvement Cost: $409,000,  Total Project Cost: $6,133,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: 27C0028,  Location: .5 MI SW SR FRANCIS DRK B (Lat: 37.945000,  Lng: -122.537778),  Route carried "on" structure: City street E455,  Year Built: 1958,  Year Reconstructed: 1994,  Status: Open,  Structure Length: 12.92m (42.39ft),  Average Daily Traffic: 3,000 (year 1978),  Truck Traffic: 3%,  Average Future Daily Traffic: 7,544 (year 2029),  Design Load: H 20,  Features Intersected: CORTE MADERA CREEK,  Facility Carried by Structure: BON AIR RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 14.0m (45.9ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 10,  Length of Maximum Span: 12.8m (42.0ft),  Curb or Sidewalk Widths: Left: 1.5m (4.9ft),  Right: 0.6m (2.0ft),  Curb-To-Curb Width: 8.5m (27.9ft),  Out-to-Out Width: 13.4m (44.0ft)

Condition: Deck: Satisfactory,  Superstructure: Fair,  Substructure: Serious,  Channel: Satisfactory,  Operating Rating: 53.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 32.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: High priority of corrective action,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Underwater Inspection Frequency: Every 60 months,  Inspection Date: September 2007,  Underwater Inspection Date: January 2008,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete

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Structure Number: 27C0067,  Location: IN LARKSPUR (Lat: 37.937778,  Lng: -122.530000),  Route carried "on" structure: City street E454,  Year Built: 1965,  Status: Open,  Structure Length: 1.28m (4.20ft),  Average Daily Traffic: 3,000 (year 1978),  Truck Traffic: 4%,  Average Future Daily Traffic: 5,239 (year 2029),  Design Load: HS 20,  Features Intersected: ARROYO HOLON,  Facility Carried by Structure: DOHERTY DR
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 12.5m (41.0ft),  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 6.7m (22.0ft),  Curb or Sidewalk Widths: Left: 1.7m (5.6ft),  Right: 1.6m (5.2ft),  Curb-To-Curb Width: 10.9m (35.8ft),  Out-to-Out Width: 14.6m (47.9ft)

Condition: Deck: Fair,  Superstructure: Good,  Substructure: Serious,  Channel: Satisfactory,  Operating Rating: 25.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 15.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: High priority of corrective action,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2007,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete

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Structure Number: 27C0068,  Location: IN LARKSPUR (Lat: 37.935833,  Lng: -122.532778),  Route carried "on" structure: City street E451,  Year Built: 1974,  Status: Open,  Structure Length: 1.25m (4.10ft),  Average Daily Traffic: 3,000 (year 1978),  Truck Traffic: 2%,  Average Future Daily Traffic: 3,375 (year 2027),  Design Load: HS 20,  Features Intersected: BRANCH CORTE MADERA CRK,  Facility Carried by Structure: MEADWOOD DR
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 11.6m (38.1ft),  Curb or Sidewalk Widths: Left: 1.4m (4.6ft),  Right: 1.4m (4.6ft),  Curb-To-Curb Width: 8.6m (28.2ft),  Out-to-Out Width: 12.2m (40.0ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Good,  Operating Rating: 53.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 32.6 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: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2005,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete

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Structure Number: 27C015,  Location: 0.1 MI E INTX MAGNLA AVE (Lat: 37.930000,  Lng: -122.531944),  Route carried "on" structure: City street ,  Year Built: 1925,  Status: Posted for load,  Structure Length: 5.00m (16.40ft),  Average Daily Traffic: 150 (year 1982),  Truck Traffic: 2%,  Average Future Daily Traffic: 314 (year 2029),  Features Intersected: ABANDONED NWP RR ROW,  Facility Carried by Structure: ALEXANDER AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: City or Municipal Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Material/Design: Concrete,  Design/Construction: Arch - Thru,  Number Of Spans In Main Unit: 1,  Number Of Approach Spans: 6,  Length of Maximum Span: 11.6m (38.1ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 1.7m (5.6ft),  Curb-To-Curb Width: 6.2m (20.3ft),  Out-to-Out Width: 8.8m (28.9ft)

Condition: Deck: Poor,  Superstructure: Satisfactory,  Substructure: Good,  Operating Rating: 9.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 5.4 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: High priority of replacement,  Deck Geometry: Meets minimum limits,  Approach Roadway Alignment: Meets minimum limits,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Length Of Structure Improvement: 6.02m (19.75ft),  Designated Inspection Frequency: Every 12 months,  Inspection Date: July 2007,  Bridge Improvement Cost: $635,000,  Roadway Improvement Cost: $64,000,  Total Project Cost: $953,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete

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Structure Number: 27 0008,  Location: 04-MRN-101-8.47-LKSP (Lat: 37.943333,  Lng: -122.513333),  Route carried "under" structure: City street E011,  Year Built: 1957,  Structure Length: 38.56m (126.51ft),  Features Intersected: CORTE MADERA CR & SFD BL,  Facility Carried by Structure: U.S. HIGHWAY 101
Minimum Vertical Clearance: 4.88m (16.01ft),  Kilometerpoint: 0.000,  Lanes on structure: 8,  Lanes under structure: 5,  Material/Design: Concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Length of Maximum Span: 24.4m (80.1ft)

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Structure Number: 27 0008K,  Location: 04-MRN-101-8.47-LKSP (Lat: 37.943333,  Lng: -122.515000),  Route carried "under" structure: City street ,  Year Built: 1959,  Structure Length: 50.23m (164.80ft),  Features Intersected: CORTE MADERA CR & EB SFD,  Facility Carried by Structure: U.S. HIGHWAY 101
Minimum Vertical Clearance: 4.62m (15.16ft),  Kilometerpoint: 0.000,  Lanes on structure: 1,  Lanes under structure: 1,  Material/Design: Concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Length of Maximum Span: 24.4m (80.1ft)

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Structure Number: 27 0008S,  Location: 04-MRN-101-8.47-LKSP (Lat: 37.943333,  Lng: -122.513333),  Route carried "under" structure: Ramp US 101,  Year Built: 1961,  Structure Length: 53.80m (176.51ft),  Truck Traffic: 5%,  Features Intersected: CORTE MADERA CR & SFD BL
Minimum Vertical Clearance: 4.47m (14.67ft),  Kilometerpoint: 0.847,  Lanes on structure: 1,  Lanes under structure: 1,  Material/Design: Concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Length of Maximum Span: 24.4m (80.1ft)

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Structure Number: 27 0008S,  Location: 04-MRN-101-8.47-LKSP (Lat: 37.943333,  Lng: -122.513333),  Route carried "under" structure: Business City street ,  Year Built: 1961,  Structure Length: 53.80m (176.51ft),  Truck Traffic: 5%,  Features Intersected: CORTE MADERA CR & SFD BL,  Facility Carried by Structure: U.S. HIGHWAY 101
Minimum Vertical Clearance: 4.52m (14.83ft),  Kilometerpoint: 0.000,  Lanes on structure: 1,  Lanes under structure: 6,  Material/Design: Concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Length of Maximum Span: 24.4m (80.1ft)

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Structure Number: 27 0078,  Location: 04-MRN-101-8.29-LKSP (Lat: 37.940000,  Lng: -122.515000),  Route carried "under" structure: US 101,  Year Built: 1959,  Structure Length: 5.27m (17.29ft),  Average Daily Traffic: 165,000 (year 2001),  Truck Traffic: 3%,  Features Intersected: U.S. HIGHWAY 101,  Facility Carried by Structure: GREENBRAE PED. OC
Minimum Vertical Clearance: 5.25m (17.22ft),  Kilometerpoint: 0.829,  Lanes under structure: 9,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 27.4m (89.9ft)

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Structure Number: 27C0044,  Location: AT SIR FRANCIS DRAKE BLVD (Lat: 37.945000,  Lng: -122.512778),  Route carried "under" structure: City street E011,  Year Built: 1935,  Structure Length: 1.74m (5.71ft),  Features Intersected: NWP RR,  Facility Carried by Structure: SIR FRANCIS DRK BL
Minimum Vertical Clearance: 4.11m (13.48ft),  Kilometerpoint: 0.000,  Lanes under structure: 4,  Material/Design: Wood or Timber,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 4.6m (15.1ft)

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Structure Number: 27C0152,  Location: 1/4 MI E OF US 101 (Lat: 37.946944,  Lng: -122.510000),  Route carried "under" structure: City street E011,  Year Built: 1981,  Structure Length: 12.00m (39.37ft),  Truck Traffic: 5%,  Features Intersected: SIR FRANCIS DRAKE POC,  Facility Carried by Structure: SIR FRANCIS DRK BL
Minimum Vertical Clearance: 5.08m (16.67ft),  Kilometerpoint: 0.000,  Lanes under structure: 4,  Material/Design: Concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Length of Maximum Span: 20.1m (65.9ft)