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


  • National Bridge Inventory (NBI) Statistics
  • 10Number of bridges
  • 56ft / 16.8mTotal length
  • $7,000Total costs
  • 41,232Total average daily traffic
  • 2,124Total average daily truck traffic
  • 42,978Total future (year 2019) average daily traffic
  • National Bridge Inventory (NBI) Registered Bridges for Williamson
  • No street view available for this location

New bridges in Williamson, AZ - historical statistics
  • New bridges - historical statistics
  • 21930-1939
  • 21960-1969
  • 21970-1979
  • 21990-1999
  • 22000-2009
Reconstructed bridges in Williamson, AZ - Historical Statistics
  • Reconstructed bridges - Historical Statistics
  • 11950-1959
  • 01960-1969
  • 01970-1979
  • 01980-1989
  • 01990-1999
  • 02000-2009
  • 12010-2019
Average Bridge Daily Traffic in Williamson, AZ
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 33.3%Good
  • 66.7%Satisfactory
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 33.3%Good
  • 66.7%Satisfactory
Bridge Condition - Culverts
  • Bridge Condition - Culverts
  • 14.3%Very good
  • 85.7%Good
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Structure Number: 6036,  Location: 4.9 mi N Jct SR 89A (Lat: 34.678728,  Lng: -112.442631),  Route carried "on" structure: State highway 89,  Year Built: 1961,  Year Reconstructed: 2015,  Status: Open,  Structure Length: 0.98m (3.22ft),  Average Daily Traffic: 24,501 (year 2019),  Truck Traffic: 8%,  Average Future Daily Traffic: 26,157 (year 2040),  Design Load: HS 20,  Features Intersected: Wash
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 518.933,  Lanes on structure: 4,  Owner: State Highway Agency,  Approaching Roadway Width: 12.2m (40.0ft),  Skew: 10 degrees,  Material/Design: Concrete continuous,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 3.0m (9.8ft),  Curb-To-Curb Width: 12.2m (40.0ft),  Out-to-Out Width: 17.0m (55.8ft)

Condition: Channel: Good,  Culverts: Good,  Operating Rating: 53.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 32.7 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: High priority of replacement,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 5.67m (18.60ft),  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2021,  Bridge Improvement Cost: $5,000,  Total Project Cost: $5,000 ( Estimate for 2021)
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Structure Number: 9106,  Location: 17.6 mi N Jct Iron Spr Rd (Lat: 34.773600,  Lng: -112.608900),  Route carried "on" structure: County highway ,  Year Built: 1937,  Year Reconstructed: 1957,  Status: Open,  Structure Length: 3.02m (9.91ft),  Average Daily Traffic: 362 (year 2020),  Truck Traffic: 1%,  Average Future Daily Traffic: 372 (year 2041),  Design Load: HS 20,  Features Intersected: Mint Wash,  Facility Carried by Structure: Williamson Vly Rd
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Material/Design: Concrete continuous,  Design/Construction: Slab,  Number Of Spans In Main Unit: 5,  Length of Maximum Span: 6.1m (20.0ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 6.2m (20.3ft),  Out-to-Out Width: 6.8m (22.3ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Satisfactory,  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: Meets minimum limits,  Waterway Adequacy: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 3.84m (12.60ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2021,  Total Project Cost: $1,000 ( Estimate for 2021),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Epoxy Overlay
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Structure Number: 9107,  Location: 21.9 mi N Jct Iron Spr Rd (Lat: 34.817975,  Lng: -112.632178),  Route carried "on" structure: County highway ,  Year Built: 1939,  Status: Open,  Structure Length: 5.18m (16.99ft),  Average Daily Traffic: 150 (year 2021),  Truck Traffic: 1%,  Average Future Daily Traffic: 160 (year 2041),  Design Load: H 15,  Features Intersected: Williamson Valley Wash,  Facility Carried by Structure: Williamson Vly Rd
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.7m (22.0ft),  Skew: 3 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 13.7m (44.9ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 6.7m (22.0ft),  Out-to-Out Width: 7.6m (24.9ft)

Condition: Deck: Satisfactory,  Superstructure: Good,  Substructure: Satisfactory,  Channel: Good,  Operating Rating: 48.1 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: Meets minimum limits,  Waterway Adequacy: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 6.07m (19.91ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2021,  Total Project Cost: $1,000 ( Estimate for 2021),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 9602,  Location: 18.1 mi N Jct Iron Spr Rd (Lat: 34.773300,  Lng: -112.616200),  Route carried "on" structure: County highway ,  Year Built: 1961,  Status: Open,  Structure Length: 0.70m (2.30ft),  Average Daily Traffic: 362 (year 2020),  Truck Traffic: 1%,  Average Future Daily Traffic: 372 (year 2041),  Design Load: HS 20,  Features Intersected: BNSF RR,  Facility Carried by Structure: Williamson Vly Rd
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County 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: 3.0m (9.8ft),  Curb-To-Curb Width: 10.4m (34.1ft),  Out-to-Out Width: 11.0m (36.1ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Operating Rating: 54.4 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,  Underclear: Meets minimum limits,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 10751,  Location: 0.08 mi S of Inscr Cyn Dr (Lat: 34.740722,  Lng: -112.563917),  Route carried "on" structure: County highway ,  Year Built: 2000,  Status: Open,  Structure Length: 1.16m (3.81ft),  Average Daily Traffic: 110 (year 2019),  Truck Traffic: 1%,  Average Future Daily Traffic: 120 (year 2039),  Design Load: HS 20,  Features Intersected: Cooper Wash,  Facility Carried by Structure: Warpaint Place
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Skew: 1 degrees,  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 7,  Length of Maximum Span: 1.5m (4.9ft)

Condition: Channel: Good,  Culverts: Good,  Operating Rating: 64.4 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: Better than present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2019
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Structure Number: 10755,  Location: 0.6 mi E of Will. Vly Rd (Lat: 34.652778,  Lng: -112.505556),  Route carried "on" structure: County highway ,  Year Built: 1990,  Status: Open,  Structure Length: 1.10m (3.61ft),  Average Daily Traffic: 527 (year 2019),  Truck Traffic: 1%,  Average Future Daily Traffic: 537 (year 2039),  Design Load: HS 20,  Features Intersected: Wash,  Facility Carried by Structure: Glenshandra Dr
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 7.3m (24.0ft),  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: Good,  Culverts: Very good,  Operating Rating: 63.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 38.1 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present desirable criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2019
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Structure Number: 10756,  Location: 0.3 mi W of Will. Vly Rd (Lat: 34.652778,  Lng: -112.522222),  Route carried "on" structure: County highway ,  Year Built: 1995,  Status: Open,  Structure Length: 0.85m (2.79ft),  Average Daily Traffic: 110 (year 2019),  Truck Traffic: 1%,  Average Future Daily Traffic: 120 (year 2039),  Design Load: HS 20,  Features Intersected: Wash,  Facility Carried by Structure: Granite Park Dr
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: 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: Good,  Culverts: Good,  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: Better than present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2019,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous
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Structure Number: 10757,  Location: at Merril Dr crossing (Lat: 34.636111,  Lng: -112.505556),  Route carried "on" structure: County highway ,  Year Built: 1973,  Status: Open,  Structure Length: 0.98m (3.22ft),  Average Daily Traffic: 11,505 (year 2019),  Truck Traffic: 1%,  Average Future Daily Traffic: 11,515 (year 2039),  Design Load: HS 20,  Features Intersected: Wash,  Facility Carried by Structure: Williamson Vly Rd
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  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: 89.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 76.2 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2019
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Structure Number: 10772,  Location: 0.3 mi W of Will. Val. Rd (Lat: 34.742500,  Lng: -112.568028),  Route carried "on" structure: County highway ,  Year Built: 2000,  Status: Open,  Structure Length: 1.43m (4.69ft),  Average Daily Traffic: 464 (year 2019),  Truck Traffic: 1%,  Average Future Daily Traffic: 474 (year 2039),  Design Load: HS 20,  Features Intersected: Cooper Wash,  Facility Carried by Structure: Inscription Cyn Dr
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Skew: 1 degrees,  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 6,  Length of Maximum Span: 1.8m (5.9ft)

Condition: Channel: Good,  Culverts: Good,  Operating Rating: 64.4 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: Better than present minimum criteria,  Waterway Adequacy: Better than present minimum criteria,  Approach Roadway Alignment: Somewhat better than minimum adequacy,  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2019
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Structure Number: 10774,  Location: 1.3 mi E W. Valley Rd (Lat: 34.705556,  Lng: -112.519444),  Route carried "on" structure: County highway ,  Year Built: 1979,  Status: Open,  Structure Length: 1.37m (4.49ft),  Average Daily Traffic: 3,141 (year 2019),  Truck Traffic: 1%,  Average Future Daily Traffic: 3,151 (year 2019),  Design Load: HS 20,  Features Intersected: Wash,  Facility Carried by Structure: Outer Loop Rd
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 8.5m (27.9ft),  Material/Design: Steel,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 8,  Length of Maximum Span: 1.5m (4.9ft)

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: Better than present minimum criteria,  Approach Roadway Alignment: Better than present minimum criteria,  Designated Inspection Frequency: Every 48 months,  Inspection Date: July 2019
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