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Bridge Statistics for North Irwin, Pennsylvania (PA)
Condition, Traffic, Stress, Structural Evaluation, Project Costs


  • National Bridge Inventory (NBI) Statistics
  • 13Number of bridges
  • 135ft / 41.3mTotal length
  • $1,956,000Total costs
  • 34,667Total average daily traffic
  • 3,434Total average daily truck traffic
  • National Bridge Inventory (NBI) Registered Bridges for North Irwin
  • No street view available for this location

New bridges in North Irwin, PA - historical statistics
  • New bridges - historical statistics
  • 11900-1909
  • 11930-1939
  • 21960-1969
  • 21970-1979
  • 61990-1999
  • 12000-2009
Average Bridge Daily Traffic in North Irwin, PA
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 44.4%Good
  • 33.3%Satisfactory
  • 22.2%Fair
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 11.1%Very good
  • 22.2%Good
  • 44.4%Satisfactory
  • 11.1%Fair
  • 11.1%Critical
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 66.7%Good
  • 11.1%Satisfactory
  • 11.1%Fair
  • 11.1%Imminent failure
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 28.6%Very good
  • 42.9%Fair
  • 28.6%Poor
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Structure Number: 3074,  Location: RTE 422 GLADE (Lat: 40.817222,  Lng: -79.569856),  Route carried "on" structure: US 422,  Year Built: 1961,  Status: Open,  Structure Length: 1.34m (4.40ft),  Average Daily Traffic: 17,545 (year 2022),  Truck Traffic: 13%,  Average Future Daily Traffic: 15,080 (year 2032),  Design Load: HS 20,  Features Intersected: GLADE RUN
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 11.093,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 11.6m (38.1ft),  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 4.3m (14.1ft)

Condition: Channel: Fair,  Culverts: Satisfactory,  Operating Rating: 49.0 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: Equal to present minimum criteria,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: April 2019
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Structure Number: 33646,  Location: IRWIN TOWNSHIP (Lat: 41.215000,  Lng: -79.938333),  Route carried "on" structure: State highway ,  Year Built: 1975,  Status: Open,  Structure Length: 7.19m (23.59ft),  Average Daily Traffic: 70 (year 2022),  Truck Traffic: 3%,  Average Future Daily Traffic: 141 (year 2032),  Design Load: HS 20,  Features Intersected: OVER SR 8,N/S R.C.FRAME,  Facility Carried by Structure: SR 3102,BLAIR ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Lanes under structure: 8,  Owner: State Highway Agency,  Approaching Roadway Width: 4.9m (16.1ft),  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 35.4m (116.1ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 12.2m (40.0ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Good,  Operating Rating: 77.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 46.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to 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: 7.20m (23.62ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2020,  Bridge Improvement Cost: $10,000,  Roadway Improvement Cost: $28,000,  Total Project Cost: $130,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 36352,  Location: NORTH HUNTINGDON TOWNSHIP (Lat: 40.343872,  Lng: -79.724617),  Route carried "on" structure: State highway 993,  Year Built: 1937,  Year Reconstructed: 2010,  Status: Open,  Structure Length: 4.66m (15.29ft),  Average Daily Traffic: 3,820 (year 2022),  Truck Traffic: 7%,  Average Future Daily Traffic: 7,133 (year 2032),  Design Load: HS 20,  Features Intersected: BRUSH CREEK
Minimum Vertical Clearance: 4.82m (15.81ft),  Kilometerpoint: 6.180,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 12.8m (42.0ft),  Skew: 4 degrees,  Material/Design: Steel,  Design/Construction: Truss - Thru,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 44.5m (146.0ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 1.7m (5.6ft),  Curb-To-Curb Width: 12.4m (40.7ft),  Out-to-Out Width: 13.4m (44.0ft)

Condition: Deck: Satisfactory,  Superstructure: Very good,  Substructure: Good,  Channel: Fair,  Operating Rating: 65.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 39.0 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: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 4.50m (14.76ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: July 2021,  Critical Feature Inspection Date: July 2021,  Bridge Improvement Cost: $79,000,  Roadway Improvement Cost: $233,000,  Total Project Cost: $1,069,000,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 36354,  Location: NORTH HUNTINGDON TOWNSHIP (Lat: 40.338331,  Lng: -79.718253),  Route carried "on" structure: State highway 993,  Year Built: 1990,  Status: Open,  Structure Length: 3.51m (11.52ft),  Average Daily Traffic: 3,339 (year 2020),  Truck Traffic: 9%,  Average Future Daily Traffic: 5,366 (year 2042),  Design Load: HS 25 or greater,  Features Intersected: BRUSH CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 7.525,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Skew: 4 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Single/Spread,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 17.4m (57.1ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 11.0m (36.1ft),  Out-to-Out Width: 12.0m (39.4ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Fair,  Inventory Rating: 48.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 4.60m (15.09ft),  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2019,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 36355,  Location: NORTH HUNTINGDON TOWNSHIP (Lat: 40.334575,  Lng: -79.716706),  Route carried "on" structure: State highway 993,  Year Built: 1961,  Status: Open,  Structure Length: 4.27m (14.01ft),  Average Daily Traffic: 3,339 (year 2020),  Truck Traffic: 9%,  Average Future Daily Traffic: 5,366 (year 2032),  Design Load: HS 20,  Features Intersected: BRUSH CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 7.525,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Skew: 4 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Single/Spread,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 20.4m (66.9ft),  Curb or Sidewalk Widths: Left: 0.5m (1.6ft),  Right: 0.5m (1.6ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 13.9m (45.6ft)

Condition: Deck: Fair,  Superstructure: Fair,  Substructure: Fair,  Channel: Poor,  Operating Rating: 81.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 49.0 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: Superior to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Length Of Structure Improvement: 5.20m (17.06ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 36717,  Location: NORTH HUNTINGDON TOWNSHIP (Lat: 40.337664,  Lng: -79.707194),  Route carried "on" structure: State highway ,  Year Built: 1971,  Status: Open,  Structure Length: 0.91m (2.99ft),  Average Daily Traffic: 1,525 (year 2022),  Truck Traffic: 1%,  Average Future Daily Traffic: 2,075 (year 2032),  Design Load: HS 20,  Features Intersected: COAL RUN,  Facility Carried by Structure: SR 4027
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.161,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 13.7m (44.9ft),  Skew: 4 degrees,  Material/Design: Concrete,  Design/Construction: Slab,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 7.9m (25.9ft),  Curb-To-Curb Width: 13.8m (45.3ft),  Out-to-Out Width: 14.6m (47.9ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Channel: Poor,  Operating Rating: 65.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 39.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Superior to present desirable criteria,  Waterway Adequacy: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 1.40m (4.59ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: Febuary 2020,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 36871,  Location: AT RTE 993 IN LARIMER (Lat: 40.349861,  Lng: -79.731883),  Route carried "on" structure: City street B0R0,  Year Built: 1991,  Status: Open,  Structure Length: 4.33m (14.21ft),  Average Daily Traffic: 50 (year 2012),  Truck Traffic: 5%,  Average Future Daily Traffic: 70 (year 2032),  Design Load: HS 25 or greater,  Features Intersected: NORFOLK SOUTHERN,  Facility Carried by Structure: BARNER HILL RD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 7.6m (24.9ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 22.6m (74.1ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 7.6m (24.9ft),  Out-to-Out Width: 8.7m (28.5ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 49.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 29.9 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: High priority of corrective action,  Approach Roadway Alignment: Meets minimum limits,  Length Of Structure Improvement: 5.20m (17.06ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: November 2020,  Bridge Improvement Cost: $29,000,  Roadway Improvement Cost: $86,000,  Total Project Cost: $394,000,  Deck Structure Type: Corrugated Steel,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 37005,  Location: 0.4 MI WEST OF SR 4027 (Lat: 40.337600,  Lng: -79.713800),  Route carried "on" structure: City street ,  Year Built: 1900,  Status: Closed,  Structure Length: 4.42m (14.50ft),  Average Daily Traffic: 50 (year 2004),  Truck Traffic: 1%,  Average Future Daily Traffic: 70 (year 2010),  Design Load: H 15,  Features Intersected: NORFOLK SOUTHERN RAILRD,  Facility Carried by Structure: FOURTH STREET
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: Railroad,  Approaching Roadway Width: 5.5m (18.0ft),  Material/Design: Steel continuous,  Design/Construction: Girder and Floorbeam System,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 18.6m (61.0ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 2.1m (6.9ft),  Curb-To-Curb Width: 6.7m (22.0ft),  Out-to-Out Width: 7.9m (25.9ft)

Condition: Deck: Fair,  Superstructure: Critical,  Substructure: Imminent failure,  Deck Geometry: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Length Of Structure Improvement: 5.30m (17.39ft),  Designated Inspection Frequency: Every 24 months,  Critical Feature Inspection Frequency: Every 24 months,  Inspection Date: April 2020,  Critical Feature Inspection Date: April 2020,  Bridge Improvement Cost: $27,000,  Roadway Improvement Cost: $79,000,  Total Project Cost: $363,000,  Deck Structure Type: Wood or Timber
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Structure Number: 39707,  Location: NORTH HUNTINGDON TOWNSHIP (Lat: 40.338333,  Lng: -79.706667),  Route carried "on" structure: State highway ,  Year Built: 1997,  Status: Open,  Structure Length: 9.11m (29.89ft),  Average Daily Traffic: 3,154 (year 2022),  Truck Traffic: 8%,  Average Future Daily Traffic: 3,533 (year 2032),  Design Load: HS 20,  Features Intersected: SR 4027,REED ST,COAL RUN,  Facility Carried by Structure: SR 4025
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Lanes under structure: 8,  Owner: State Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Prestressed concrete continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 32.6m (107.0ft),  Curb or Sidewalk Widths: Left: 1.5m (4.9ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 8.5m (27.9ft),  Out-to-Out Width: 10.9m (35.8ft)

Condition: Deck: Good,  Superstructure: Good,  Substructure: Good,  Channel: Very good,  Operating Rating: 72.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 43.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Meets minimum limits,  Underclear: Superior to present desirable criteria,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 10.10m (33.14ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: Febuary 2020,  Deck Structure Type: Corrugated Steel,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 40387,  Location: 650' NORTH OF SR 993 (Lat: 40.336494,  Lng: -79.717444),  Route carried "on" structure: City street RD,  Year Built: 1998,  Status: Open,  Structure Length: 0.67m (2.20ft),  Average Daily Traffic: 100 (year 2012),  Average Future Daily Traffic: 550 (year 2032),  Features Intersected: ABANDONED RAILROAD,  Facility Carried by Structure: SOUTH SIDE ROAD
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 6.1m (20.0ft)

Condition: Culverts: Satisfactory,  Inventory Rating: 99.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: November 2020
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Structure Number: 48494,  Location: North Huntingdon Twp (Lat: 40.345983,  Lng: -79.724828),  Route carried "on" structure: City street ,  Year Built: 2000,  Status: Open,  Structure Length: 0.91m (2.99ft),  Average Daily Traffic: 100 (year 2017),  Truck Traffic: 1%,  Average Future Daily Traffic: 120 (year 2036),  Design Load: HS 20,  Features Intersected: Branch of Brush Creek,  Facility Carried by Structure: Frog Road
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: Town or Township Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Concrete,  Design/Construction: Frame,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 9.1m (29.9ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 8.6m (28.2ft),  Out-to-Out Width: 9.2m (30.2ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Very good,  Operating Rating: 49.0 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 32.7 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: Better than present minimum criteria,  Approach Roadway Alignment: Meets minimum limits,  Designated Inspection Frequency: Every 24 months,  Inspection Date: June 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 39707,  Location: NORTH HUNTINGDON TOWNSHIP (Lat: 40.338333,  Lng: -79.706667),  Route carried "under" structure: City street ,  Year Built: 1997,  Structure Length: 0. m,  Average Daily Traffic: 50 (year 1981),  Features Intersected: SR 4027,REED ST,COAL RUN,  Facility Carried by Structure: SR 4025
Minimum Vertical Clearance: 8.51m (27.92ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Lanes under structure: 4,  Material/Design: Prestressed concrete continuous,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 32.6m (107.0ft)

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Structure Number: 39707,  Location: NORTH HUNTINGDON TOWNSHIP (Lat: 40.338333,  Lng: -79.706667),  Route carried "under" structure: State highway ,  Year Built: 1997,  Structure Length: 0. m,  Average Daily Traffic: 1,525 (year 2022),  Truck Traffic: 1%,  Features Intersected: SR 4027,REED ST,COAL RUN,  Facility Carried by Structure: SR 4025
Minimum Vertical Clearance: 13.62m (44.69ft),  Kilometerpoint: 0.161,  Lanes on structure: 2,  Lanes under structure: 4,  Material/Design: Prestressed concrete continuous,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 32.6m (107.0ft)

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