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Bridge Statistics for Islip, New York (NY)
Condition, Traffic, Stress, Structural Evaluation, Project Costs


  • National Bridge Inventory (NBI) Statistics
  • 10Number of bridges
  • 89ft / 26.6mTotal length
  • $48,825,000Total costs
  • 459,284Total average daily traffic
  • 14,506Total average daily truck traffic
  • National Bridge Inventory (NBI) Registered Bridges for Islip
  • No street view available for this location

New bridges in Islip, NY - historical statistics
  • New bridges - historical statistics
  • 21960-1969
  • 21970-1979
  • 61980-1989
Average Bridge Daily Traffic in Islip, NY
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 20.0%Very good
  • 60.0%Good
  • 20.0%Satisfactory
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 20.0%Very good
  • 20.0%Good
  • 60.0%Satisfactory
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 20.0%Very good
  • 40.0%Good
  • 40.0%Satisfactory
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Structure Number: 101925,  Location: ISLIP - SH 111 OVER SH 27 (Lat: 40.742236,  Lng: -73.207428),  Route carried "on" structure: State highway 111,  Year Built: 1988,  Status: Open,  Structure Length: 6.58m (21.59ft),  Average Daily Traffic: 14,104 (year 2020),  Truck Traffic: 6%,  Average Future Daily Traffic: 16,273 (year 2040),  Design Load: HS 20,  Features Intersected: 27 27 07051124, 27 27
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.303,  Lanes on structure: 6,  Lanes under structure: 10,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 21.9m (71.9ft),  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: 32.3m (106.0ft),  Curb or Sidewalk Widths: Left: 1.5m (4.9ft),  Right: 1.5m (4.9ft),  Curb-To-Curb Width: 21.9m (71.9ft),  Out-to-Out Width: 27.9m (91.5ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Operating Rating: 61.9 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: 26.2 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: High priority of corrective action,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 6.58m (21.59ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: October 2020,  Bridge Improvement Cost: $6,379,000,  Roadway Improvement Cost: $3,736,000,  Total Project Cost: $10,115,000 ( Estimate for 2021),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 1037019,  Location: JCT RTS 111+HSP (Lat: 40.755486,  Lng: -73.209214),  Route carried "on" structure: State highway 111,  Year Built: 1960,  Status: Open,  Structure Length: 4.54m (14.90ft),  Average Daily Traffic: 14,104 (year 2020),  Truck Traffic: 6%,  Average Future Daily Traffic: 16,273 (year 2040),  Design Load: H 20,  Features Intersected: 908M908M07021128, RTE 90
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 2.816,  Lanes on structure: 6,  Lanes under structure: 8,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 21.9m (71.9ft),  Skew: 21 degrees,  Material/Design: Concrete continuous,  Design/Construction: Frame,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 21.0m (68.9ft),  Curb or Sidewalk Widths: Left: 1.5m (4.9ft),  Right: 1.5m (4.9ft),  Curb-To-Curb Width: 21.9m (71.9ft),  Out-to-Out Width: 27.1m (88.9ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Operating Rating: 59.8 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 23.3 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Somewhat better than minimum adequacy,  Deck Geometry: High priority of corrective action,  Underclear: High priority of corrective action,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 4.54m (14.90ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2021,  Bridge Improvement Cost: $5,633,000,  Roadway Improvement Cost: $3,299,000,  Total Project Cost: $8,931,000 ( Estimate for 2021),  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric
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Structure Number: 105615,  Location: 1.6 MI W JCT RTS 27+111 (Lat: 40.737806,  Lng: -73.238431),  Route carried "on" structure: Other road ,  Year Built: 1970,  Status: Open,  Structure Length: 7.62m (25.00ft),  Average Daily Traffic: 15,432 (year 2020),  Truck Traffic: 3%,  Average Future Daily Traffic: 18,746 (year 2040),  Design Load: HS 20,  Features Intersected: 27 27 07051108 E/B, 27,  Facility Carried by Structure: BRENTWOOD ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 1.239,  Lanes on structure: 6,  Lanes under structure: 12,  Owner: State Highway Agency,  Approaching Roadway Width: 23.2m (76.1ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 20.4m (66.9ft),  Curb or Sidewalk Widths: Left: 1.6m (5.2ft),  Right: 1.6m (5.2ft),  Curb-To-Curb Width: 23.2m (76.1ft),  Out-to-Out Width: 27.0m (88.6ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Operating Rating: 80.7 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 48.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Meets minimum limits,  Underclear: High priority of corrective action,  Approach Roadway Alignment: Equal to present minimum criteria,  Length Of Structure Improvement: 7.62m (25.00ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: November 2021,  Bridge Improvement Cost: $7,960,000,  Roadway Improvement Cost: $4,661,000,  Total Project Cost: $12,621,000 ( Estimate for 2021),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 1072679,  Location: 1.1 MI W JCT SH 27 & SH 1 (Lat: 40.739203,  Lng: -73.228719),  Route carried "on" structure: State highway 27,  Year Built: 1985,  Status: Open,  Structure Length: 3.38m (11.09ft),  Average Daily Traffic: 88,240 (year 2020),  Truck Traffic: 7%,  Average Future Daily Traffic: 104,961 (year 2040),  Design Load: HS 20,  Features Intersected: SAXON AVE
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 18.150,  Lanes on structure: 6,  Lanes under structure: 5,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 32.0m (105.0ft),  Skew: 20 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 32.0m (105.0ft),  Curb-To-Curb Width: 32.1m (105.3ft),  Out-to-Out Width: 33.9m (111.2ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 57.0 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: 43.7 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: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 3.38m (11.09ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2020,  Bridge Improvement Cost: $4,511,000,  Roadway Improvement Cost: $2,641,000,  Total Project Cost: $7,152,000 ( Estimate for 2021),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 1072689,  Location: .4 MI W JCT SH 27 & SH 11 (Lat: 40.741419,  Lng: -73.214331),  Route carried "on" structure: State highway 27,  Year Built: 1985,  Status: Open,  Structure Length: 4.45m (14.60ft),  Average Daily Traffic: 88,240 (year 2020),  Truck Traffic: 7%,  Average Future Daily Traffic: 104,961 (year 2040),  Design Load: HS 20,  Features Intersected: COMMACK ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 19.388,  Lanes on structure: 6,  Lanes under structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 32.0m (105.0ft),  Skew: 24 degrees,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 42.3m (138.8ft),  Curb-To-Curb Width: 32.1m (105.3ft),  Out-to-Out Width: 33.9m (111.2ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Very good,  Operating Rating: 60.6 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: 46.7 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: Equal to present desirable criteria,  Deck Geometry: Superior to present desirable criteria,  Underclear: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 4.45m (14.60ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Bridge Improvement Cost: $6,311,000,  Roadway Improvement Cost: $3,695,000,  Total Project Cost: $10,006,000 ( Estimate for 2021),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Integral Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 101925,  Location: ISLIP - SH 111 OVER SH 27 (Lat: 40.742236,  Lng: -73.207428),  Route carried "under" structure: State highway 27,  Year Built: 1988,  Structure Length: 0. m,  Average Daily Traffic: 38,500 (year 1977),  Features Intersected: 27 27 07051124, 27 27,  Facility Carried by Structure: RTE 111
Minimum Vertical Clearance: 4.75m (15.58ft),  Kilometerpoint: 19.903,  Lanes on structure: 6,  Lanes under structure: 3,  Material/Design: Prestressed concrete continuous,  Design/Construction: Box Beam or Girders - Multiple,  Length of Maximum Span: 32.3m (106.0ft)

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Structure Number: 1037019,  Location: JCT RTS 111+HSP (Lat: 40.755486,  Lng: -73.209214),  Route carried "under" structure: State highway 908M,  Year Built: 1960,  Structure Length: 0. m,  Average Daily Traffic: 52,164 (year 2002),  Features Intersected: 908M908M07021128, RTE 90,  Facility Carried by Structure: RTE 111
Minimum Vertical Clearance: 3.84m (12.60ft),  Kilometerpoint: 20.113,  Lanes on structure: 6,  Lanes under structure: 4,  Material/Design: Concrete continuous,  Design/Construction: Frame,  Length of Maximum Span: 21.0m (68.9ft)

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Structure Number: 105615,  Location: 1.6 MI W JCT RTS 27+111 (Lat: 40.737806,  Lng: -73.238431),  Route carried "under" structure: ServiceState highway 27,  Year Built: 1970,  Structure Length: 0. m,  Average Daily Traffic: 38,500 (year 1977),  Features Intersected: 27 27 07051108 E/B, 27,  Facility Carried by Structure: BRENTWOOD ROAD
Minimum Vertical Clearance: 4.62m (15.16ft),  Kilometerpoint: 17.329,  Lanes on structure: 6,  Lanes under structure: 3,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 20.4m (66.9ft)

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Structure Number: 1072679,  Location: 1.1 MI W JCT SH 27 & SH 1 (Lat: 40.739203,  Lng: -73.228719),  Route carried "under" structure: City street ,  Year Built: 1985,  Structure Length: 0. m,  Average Daily Traffic: 10,000 (year 2021),  Features Intersected: SAXON AVE,  Facility Carried by Structure: RTE 27
Minimum Vertical Clearance: 4.60m (15.09ft),  Kilometerpoint: 0.000,  Lanes on structure: 6,  Lanes under structure: 5,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 32.0m (105.0ft)

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Structure Number: 1072689,  Location: .4 MI W JCT SH 27 & SH 11 (Lat: 40.741419,  Lng: -73.214331),  Route carried "under" structure: Other road ,  Year Built: 1985,  Structure Length: 0. m,  Average Daily Traffic: 100,000 (year 2021),  Features Intersected: COMMACK ROAD,  Facility Carried by Structure: RTE 27
Minimum Vertical Clearance: 4.54m (14.90ft),  Kilometerpoint: 0.000,  Lanes on structure: 6,  Lanes under structure: 4,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 42.3m (138.8ft)

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