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Bridge Statistics for Duncan, Arizona (AZ)
Condition, Traffic, Stress, Structural Evaluation, Project Costs


  • National Bridge Inventory (NBI) Statistics
  • 13Number of bridges
  • 187ft / 56.6mTotal length
  • $1,000Total costs
  • 22,076Total average daily traffic
  • 2,829Total average daily truck traffic
  • 22,206Total future (year 2035) average daily traffic
  • National Bridge Inventory (NBI) Registered Bridges for Duncan
  • No street view available for this location

New bridges in Duncan, AZ - historical statistics
  • New bridges - historical statistics
  • 21930-1939
  • 21940-1949
  • 41950-1959
  • 31960-1969
  • 11970-1979
  • 12000-2009
Reconstructed bridges in Duncan, AZ - Historical Statistics
  • Reconstructed bridges - Historical Statistics
  • 11960-1969
  • 01970-1979
  • 01980-1989
  • 01990-1999
  • 12000-2009
Average Bridge Daily Traffic in Duncan, AZ
Average Bridge Truck Traffic in Duncan, AZ
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 33.3%Good
  • 66.7%Satisfactory
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 33.3%Very good
  • 66.7%Satisfactory
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 33.3%Very good
  • 33.3%Good
  • 33.3%Fair
Bridge Condition - Channel
  • Bridge Condition - Channel
  • 38.5%Good
  • 46.2%Satisfactory
  • 7.7%Fair
  • 7.7%Poor
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 70.0%Good
  • 20.0%Satisfactory
  • 10.0%Fair
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Structure Number: 805,  Location: 14.4 mi S Jct US 191 (Lat: 32.765147,  Lng: -109.145767),  Route carried "on" structure: State highway 75,  Year Built: 1939,  Year Reconstructed: 2006,  Status: Open,  Structure Length: 4.94m (16.21ft),  Average Daily Traffic: 2,353 (year 2019),  Truck Traffic: 17%,  Average Future Daily Traffic: 2,363 (year 2039),  Design Load: H 15,  Features Intersected: Sand Wash
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 618.069,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 6,  Length of Maximum Span: 7.6m (24.9ft),  Curb-To-Curb Width: 13.4m (44.0ft),  Out-to-Out Width: 14.3m (46.9ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 47.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 28.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to 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: August 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 2551,  Location: 0.2 mi N Jct US 70 (Lat: 32.723017,  Lng: -109.102300),  Route carried "on" structure: State highway 75,  Year Built: 2003,  Status: Open,  Structure Length: 38.34m (125.79ft),  Average Daily Traffic: 2,353 (year 2019),  Truck Traffic: 17%,  Average Future Daily Traffic: 2,363 (year 2039),  Design Load: HS 20,  Features Intersected: Gila River
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 610.135,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Material/Design: Prestressed concrete continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 13,  Length of Maximum Span: 35.4m (116.1ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 1.7m (5.6ft),  Curb-To-Curb Width: 13.2m (43.3ft),  Out-to-Out Width: 15.7m (51.5ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Very good,  Channel: Satisfactory,  Operating Rating: 62.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 37.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Equal to 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: August 2021,  Deck Structure Type: Concrete Cast-file-Place
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Structure Number: 4326,  Location: 2.5 mi W Jct SR 75 (Lat: 32.740958,  Lng: -109.136433),  Route carried "on" structure: US 70,  Year Built: 1952,  Status: Open,  Structure Length: 1.04m (3.41ft),  Average Daily Traffic: 1,152 (year 2018),  Truck Traffic: 10%,  Average Future Daily Traffic: 1,162 (year 2038),  Design Load: HS 20,  Features Intersected: Wash
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 605.805,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 10.7m (35.1ft),  Skew: 2 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Satisfactory,  Culverts: Good,  Operating Rating: 89.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 89.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2019
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Structure Number: 4327,  Location: 1.7 mi W Jct SR 75 (Lat: 32.738386,  Lng: -109.125364),  Route carried "on" structure: US 70,  Year Built: 1952,  Status: Open,  Structure Length: 1.80m (5.91ft),  Average Daily Traffic: 1,152 (year 2018),  Truck Traffic: 10%,  Average Future Daily Traffic: 1,162 (year 2038),  Design Load: HS 20,  Features Intersected: Woods Canyon
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 607.061,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 10.7m (35.1ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 3.7m (12.1ft)

Condition: Channel: Satisfactory,  Culverts: Good,  Operating Rating: 89.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 89.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2019
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Structure Number: 4328,  Location: 0.9 mi W Jct SR 75 (Lat: 32.731478,  Lng: -109.114561),  Route carried "on" structure: US 70,  Year Built: 1952,  Status: Open,  Structure Length: 0.98m (3.22ft),  Average Daily Traffic: 1,152 (year 2018),  Truck Traffic: 10%,  Average Future Daily Traffic: 1,162 (year 2038),  Design Load: HS 20,  Features Intersected: Backfield Canyon
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 608.396,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 10.4m (34.1ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Good,  Culverts: Good,  Operating Rating: 57.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 33.6 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than 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: July 2019
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Structure Number: 4329,  Location: 1.6 mi E Jct SR 75 (Lat: 32.702883,  Lng: -109.090922),  Route carried "on" structure: US 70,  Year Built: 1952,  Year Reconstructed: 1965,  Status: Open,  Structure Length: 1.49m (4.89ft),  Average Daily Traffic: 1,752 (year 2018),  Truck Traffic: 10%,  Average Future Daily Traffic: 1,762 (year 2038),  Design Load: HS 20,  Features Intersected: Rainville Wash
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 612.355,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 11.6m (38.1ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Poor,  Culverts: Fair,  Operating Rating: 89.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 89.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Somewhat better than minimum adequacy,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2021
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Structure Number: 4353,  Location: 1.5 mi N Jct US 70 (Lat: 32.737500,  Lng: -109.093400),  Route carried "on" structure: State highway 75,  Year Built: 1963,  Status: Open,  Structure Length: 2.01m (6.59ft),  Average Daily Traffic: 1,562 (year 2015),  Truck Traffic: 17%,  Average Future Daily Traffic: 1,572 (year 2035),  Design Load: HS 20,  Features Intersected: Wash
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 612.380,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 10.7m (35.1ft),  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 6,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Satisfactory,  Culverts: Good,  Operating Rating: 89.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 89.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: August 2021
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Structure Number: 4354,  Location: 2.2 mi N Jct US 70 (Lat: 32.744500,  Lng: -109.102400),  Route carried "on" structure: State highway 75,  Year Built: 1963,  Status: Open,  Structure Length: 1.34m (4.40ft),  Average Daily Traffic: 1,562 (year 2015),  Truck Traffic: 17%,  Average Future Daily Traffic: 1,572 (year 2035),  Design Load: HS 20,  Features Intersected: Wash
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 613.540,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 10.4m (34.1ft),  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Satisfactory,  Culverts: Satisfactory,  Operating Rating: 89.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 89.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: August 2021
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Structure Number: 4355,  Location: 3.5 mi N Jct US 70 (Lat: 32.753100,  Lng: -109.124900),  Route carried "on" structure: State highway 75,  Year Built: 1963,  Status: Open,  Structure Length: 0.70m (2.30ft),  Average Daily Traffic: 1,562 (year 2015),  Truck Traffic: 17%,  Average Future Daily Traffic: 1,572 (year 2035),  Design Load: HS 20,  Features Intersected: Wash
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 615.680,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 10.4m (34.1ft),  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Good,  Culverts: Good,  Operating Rating: 89.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 67.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: August 2021
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Structure Number: 6608,  Location: 0.2 mi W Jct I 17 (Lat: 34.514800,  Lng: -111.996000),  Route carried "on" structure: State highway 169,  Year Built: 1976,  Status: Open,  Structure Length: 1.37m (4.49ft),  Average Daily Traffic: 5,844 (year 2018),  Truck Traffic: 11%,  Average Future Daily Traffic: 5,854 (year 2040),  Design Load: HS 20,  Features Intersected: Oxtail Draw
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 23.947,  Lanes on structure: 2,  Owner: State Highway Agency,  Approaching Roadway Width: 10.4m (34.1ft),  Skew: 1 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Good,  Culverts: Good,  Operating Rating: 89.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 89.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than 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: July 2020
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Structure Number: 8145,  Location: 0.5 mi S Jct SR 75 (Lat: 32.756967,  Lng: -109.139794),  Route carried "on" structure: County highway ,  Year Built: 1935,  Status: Posted for load,  Structure Length: 0.64m (2.10ft),  Average Daily Traffic: 188 (year 2018),  Truck Traffic: 1%,  Average Future Daily Traffic: 198 (year 2038),  Design Load: H 15,  Features Intersected: Waters Wash,  Facility Carried by Structure: Steven Loop
Minimum Vertical Clearance: 5.18m (16.99ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Material/Design: Wood or Timber,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 5.8m (19.0ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 5.8m (19.0ft),  Out-to-Out Width: 6.3m (20.7ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Fair,  Operating Rating: 16.3 metric tons,  Method Used To Determine Operating Rating: Field evaluation and documented engineering judgment,  Inventory Rating: 10.0 metric tons,  Method Used To Determine Inventory Rating: Field evaluation and documented engineering judgment,  Structural Evaluation: High priority of replacement,  Deck Geometry: High priority of corrective action,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: > 39.9% below),  Length Of Structure Improvement: 1.26m (4.13ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2021,  Total Project Cost: $1,000 ( Estimate for 2019),  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 9296,  Location: 1.5 mi E Jct SR 75 (Lat: 32.717311,  Lng: -109.074661),  Route carried "on" structure: County highway ,  Year Built: 1949,  Status: Open,  Structure Length: 1.34m (4.40ft),  Average Daily Traffic: 667 (year 2018),  Truck Traffic: 5%,  Average Future Daily Traffic: 677 (year 2038),  Design Load: HS 20,  Features Intersected: Wash,  Facility Carried by Structure: Virden Hwy
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.6m (24.9ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 3.7m (12.1ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 9.4m (30.8ft),  Out-to-Out Width: 10.1m (33.1ft)

Condition: Channel: Satisfactory,  Culverts: Satisfactory,  Operating Rating: 48.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 29.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: August 2019,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 9594,  Location: 0.6 mi E Jct SR 75 (Lat: 32.725119,  Lng: -109.087111),  Route carried "on" structure: County highway ,  Year Built: 1948,  Status: Open,  Structure Length: 0.61m (2.00ft),  Average Daily Traffic: 777 (year 2018),  Truck Traffic: 5%,  Average Future Daily Traffic: 787 (year 2038),  Design Load: HS 20,  Features Intersected: Burleson Canyon,  Facility Carried by Structure: Virden Hwy
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.9m (25.9ft),  Skew: 3 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 2,  Length of Maximum Span: 2.4m (7.9ft),  Curb or Sidewalk Widths: Left: 0.3m (1.0ft),  Right: 0.3m (1.0ft),  Curb-To-Curb Width: 10.7m (35.1ft),  Out-to-Out Width: 11.3m (37.1ft)

Condition: Channel: Good,  Culverts: Good,  Operating Rating: 44.5 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Equal to present minimum criteria,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: August 2019,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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