Bridge Statistics for Mountain Iron, Minnesota (MN) - Condition, Traffic, Stress, Structural Evaluation, Project Costs

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Structure Number: 69034,  Location: 0.1 MI W OF S JCT TH 53 (Lat: 47.519097,  Lng: -92.562753),  Route carried "on" structure: US 169,  Year Built: 1970,  Structure Length: 4.35m (14.27ft),  Average Daily Traffic: 13,500 (year 2004),  Truck Traffic: 7%,  Design Load: HS 20,  Features Intersected: DW&P RY
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 5,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 23.8m (78.1ft),  Skew: 20 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 17.5m (57.4ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 1.8m (5.9ft),  Curb-To-Curb Width: 23.6m (77.4ft),  Out-to-Out Width: 28.6m (93.8ft)

Condition: Deck: Satisfactory,  Superstructure: Good,  Substructure: Good,  Operating Rating: 60.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 35.9 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Underclear: Equal to present minimum criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2007,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Low Slump Concrete

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Structure Number: 69035,  Location: AT THE JCT TH 169 & 53 (Lat: 47.519139,  Lng: -92.561572),  Route carried "on" structure: US 169,  Year Built: 1969,  Status: Open,  Structure Length: 6.32m (20.73ft),  Average Daily Traffic: 13,500 (year 2004),  Truck Traffic: 7%,  Design Load: HS 20,  Features Intersected: US 53
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 4,  Lanes under structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 23.8m (78.1ft),  Skew: 20 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 20.1m (65.9ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 1.8m (5.9ft),  Curb-To-Curb Width: 22.3m (73.2ft),  Out-to-Out Width: 27.0m (88.6ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Satisfactory,  Operating Rating: 58.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 29.4 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: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present minimum criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: August 2007,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Low Slump Concrete

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Structure Number: 69059,  Location: 2.6 MI W OF JCT TH 53 (Lat: 47.518625,  Lng: -92.615150),  Route carried "on" structure: US 169,  Year Built: 1970,  Status: Open,  Structure Length: 7.04m (23.10ft),  Average Daily Traffic: 4,750 (year 2004),  Truck Traffic: 6%,  Design Load: HS 20,  Features Intersected: CSAH 102
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Lanes under structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 11.3m (37.1ft),  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 29.1m (95.5ft),  Curb or Sidewalk Widths: Left: 0.0m,  Right: 1.8m (5.9ft),  Curb-To-Curb Width: 12.3m (40.4ft),  Out-to-Out Width: 13.5m (44.3ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Good,  Operating Rating: 55.2 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 33.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Underclear: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2007,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Low Slump Concrete

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Structure Number: 6906,  Location: 2.6 MI W OF JCT TH 53 (Lat: 47.518319,  Lng: -92.615011),  Route carried "on" structure: US 169,  Year Built: 1970,  Status: Open,  Structure Length: 7.04m (23.10ft),  Average Daily Traffic: 4,750 (year 2004),  Truck Traffic: 6%,  Design Load: HS 20,  Features Intersected: CSAH 102
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Lanes under structure: 4,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 11.3m (37.1ft),  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 29.1m (95.5ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 12.3m (40.4ft),  Out-to-Out Width: 13.5m (44.3ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Good,  Operating Rating: 66.9 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 45.7 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,  Underclear: Superior to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Length Of Structure Improvement: 7.70m (25.26ft),  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2007,  Bridge Improvement Cost: $1,117,000,  Roadway Improvement Cost: $71,000,  Total Project Cost: $1,072,000 ( Estimate for 2006),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Low Slump Concrete

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Structure Number: 69067,  Location: 2.9 MI W OF S JCT TH 53 (Lat: 47.516603,  Lng: -92.621178),  Route carried "on" structure: US 169,  Year Built: 1970,  Status: Open,  Structure Length: 4.90m (16.08ft),  Average Daily Traffic: 3,850 (year 2004),  Truck Traffic: 5%,  Design Load: HS 20,  Features Intersected: DM&IR RY
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 3,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 13.1m (43.0ft),  Skew: 1 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 17.8m (58.4ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 14.1m (46.3ft),  Out-to-Out Width: 15.4m (50.5ft)

Condition: Deck: Satisfactory,  Superstructure: Good,  Substructure: Good,  Operating Rating: 60.1 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 33.0 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2007,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Low Slump Concrete

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Structure Number: 69068,  Location: 2.9 MI W OF S JCT TH 53 (Lat: 47.516386,  Lng: -92.621000),  Route carried "on" structure: US 169,  Year Built: 1970,  Status: Open,  Structure Length: 4.88m (16.01ft),  Average Daily Traffic: 3,850 (year 2004),  Truck Traffic: 5%,  Design Load: HS 20,  Features Intersected: DM&IR RY
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Base Highway Network: Yes,  Owner: State Highway Agency,  Approaching Roadway Width: 11.3m (37.1ft),  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 17.5m (57.4ft),  Curb or Sidewalk Widths: Left: 0.2m (0.7ft),  Right: 0.2m (0.7ft),  Curb-To-Curb Width: 12.3m (40.4ft),  Out-to-Out Width: 13.5m (44.3ft)

Condition: Deck: Good,  Superstructure: Very good,  Substructure: Very good,  Operating Rating: 66.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 33.3 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Equal to present desirable criteria,  Deck Geometry: Better than present minimum criteria,  Underclear: Somewhat better than minimum adequacy,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: May 2007,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Low Slump Concrete

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Structure Number: 69564,  Location: 2.5 MI S OF JCT TH 169 (Lat: 47.460719,  Lng: -92.687525),  Route carried "on" structure: County highway 137,  Year Built: 1987,  Status: Open,  Structure Length: 2.41m (7.91ft),  Average Daily Traffic: 285 (year 2003),  Design Load: HS 20,  Features Intersected: WEST TWO RIVERS
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 10.4m (34.1ft),  Skew: 4 degrees,  Material/Design: Wood or Timber,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 9.5m (31.2ft),  Curb-To-Curb Width: 9.8m (32.2ft),  Out-to-Out Width: 10.4m (34.1ft)

Condition: Deck: Very good,  Superstructure: Excellent,  Substructure: Very good,  Channel: Very good,  Operating Rating: 45.9 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 31.1 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Better than 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 12 months,  Inspection Date: December 2007,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: 69589,  Location: 1.0 MI N OF JCT CSAH 101 (Lat: 47.477047,  Lng: -92.613447),  Route carried "on" structure: County highway 955,  Year Built: 1988,  Status: Open,  Structure Length: 1.40m (4.59ft),  Average Daily Traffic: 230 (year 2003),  Design Load: HS 20,  Features Intersected: EAST TWO RIVERS
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 11.0m (36.1ft),  Material/Design: Wood or Timber,  Design/Construction: Slab,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 5.5m (18.0ft),  Curb-To-Curb Width: 9.8m (32.2ft),  Out-to-Out Width: 10.4m (34.1ft)

Condition: Deck: Very good,  Superstructure: Very good,  Substructure: Very good,  Channel: Very good,  Operating Rating: 46.9 metric tons,  Method Used To Determine Operating Rating: Allowable Stress (AS),  Inventory Rating: 33.1 metric tons,  Method Used To Determine Inventory Rating: Allowable Stress (AS),  Structural Evaluation: Equal to present desirable 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 12 months,  Inspection Date: December 2007,  Deck Structure Type: Wood or Timber,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: 7759,  Location: 0.3 MI E OF JCT CR315 (Lat: 47.462728,  Lng: -92.617131),  Route carried "on" structure: County highway 101,  Year Built: 1928,  Status: Posted for load,  Structure Length: 1.16m (3.81ft),  Average Daily Traffic: 270 (year 2003),  Features Intersected: EAST TWO RIVERS
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: Stringer/Multi-beam,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 10.7m (35.1ft),  Curb-To-Curb Width: 7.0m (23.0ft),  Out-to-Out Width: 7.9m (25.9ft)

Condition: Deck: Good,  Superstructure: Satisfactory,  Substructure: Fair,  Channel: Very good,  Operating Rating: 25.4 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 14.5 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF),  Structural Evaluation: Meets minimum limits,  Deck Geometry: Meets minimum limits,  Waterway Adequacy: Equal to present desirable criteria,  Approach Roadway Alignment: Equal to present desirable criteria,  Bridge Posting: Required (Relationship of Operating Rating to Maximum Legal Load: 30.0 - 39.9% below),  Length Of Structure Improvement: 1.60m (5.25ft),  Designated Inspection Frequency: Every 12 months,  Inspection Date: December 2007,  Bridge Improvement Cost: $144,000,  Roadway Improvement Cost: $13,000,  Total Project Cost: $207,000 ( Estimate for 2006),  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: 88612,  Location: 0.1 MI W OF JCT CSAH 7 (Lat: 47.530192,  Lng: -92.570589),  Route carried "on" structure: City street 60,  Year Built: 1938,  Status: Open,  Structure Length: 0.41m (1.35ft),  Average Daily Traffic: 402 (year 1975),  Features Intersected: MUD CREEK
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 10.7m (35.1ft),  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 3.7m (12.1ft)

Condition: Channel: Very good,  Culverts: Good,  Operating Rating: 40.8 metric tons,  Inventory Rating: 29.4 metric tons,  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 12 months,  Inspection Date: December 2007,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: 93504,  Location: 0.2 MI W OF JCT CSAH 7 (Lat: 47.485803,  Lng: -92.599678),  Route carried "on" structure: County highway 102,  Year Built: 1980,  Status: Open,  Structure Length: 1.25m (4.10ft),  Average Daily Traffic: 630 (year 2003),  Design Load: HS 20,  Features Intersected: EAST TWO RIVERS
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 13.4m (44.0ft),  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 2.9m (9.5ft)

Condition: Channel: Very good,  Culverts: Good,  Operating Rating: 53.9 metric tons,  Inventory Rating: 35.9 metric tons,  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 12 months,  Inspection Date: December 2007,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: 96668,  Location: 1.6 MI N OF JCT CSAH 101 (Lat: 47.482661,  Lng: -92.597453),  Route carried "on" structure: County highway 7,  Year Built: 1989,  Status: Open,  Structure Length: 0.34m (1.12ft),  Average Daily Traffic: 2,200 (year 2003),  Design Load: HS 20,  Features Intersected: EAST TWO RIVERS
Minimum Vertical Clearance: 30+ m (98+ ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 13.4m (44.0ft),  Material/Design: Concrete,  Design/Construction: Culvert,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 3.0m (9.8ft)

Condition: Channel: Very good,  Culverts: Very good,  Operating Rating: 58.8 metric tons,  Inventory Rating: 39.2 metric tons,  Structural Evaluation: Equal to present desirable criteria,  Waterway Adequacy: Superior to present desirable criteria,  Approach Roadway Alignment: Superior to present desirable criteria,  Designated Inspection Frequency: Every 12 months,  Inspection Date: December 2007,  Wearing Surface/Protective System: Wearing Surface: Bituminous

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Structure Number: 69035,  Location: AT THE JCT TH 169 & 53 (Lat: 47.519139,  Lng: -92.561572),  Route carried "under" structure: US 53,  Year Built: 1969,  Structure Length: 6.32m (20.73ft),  Average Daily Traffic: 13,300 (year 2004),  Truck Traffic: 5%,  Features Intersected: US 53,  Facility Carried by Structure: US 169
Minimum Vertical Clearance: 5.79m (19.00ft),  Kilometerpoint: 0.000,  Lanes on structure: 4,  Lanes under structure: 4,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 20.1m (65.9ft)

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Structure Number: 69036,  Location: 0.3 MI N OF JCT CSAH 102 (Lat: 47.532592,  Lng: -92.627503),  Route carried "under" structure: City street 30,  Year Built: 1965,  Structure Length: 1.77m (5.81ft),  Average Daily Traffic: 1,050 (year 1981),  Features Intersected: STR 30,  Facility Carried by Structure: DM&IR RY
Minimum Vertical Clearance: 5.33m (17.49ft),  Kilometerpoint: 0.000,  Lanes under structure: 2,  Material/Design: Steel,  Design/Construction: Girder and Floorbeam System,  Length of Maximum Span: 16.6m (54.5ft)

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Structure Number: 69059,  Location: 2.6 MI W OF JCT TH 53 (Lat: 47.518625,  Lng: -92.615150),  Route carried "under" structure: County highway 102,  Year Built: 1970,  Structure Length: 7.04m (23.10ft),  Average Daily Traffic: 2,450 (year 2003),  Features Intersected: CSAH 102,  Facility Carried by Structure: US 169 SB
Minimum Vertical Clearance: 5.36m (17.59ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Lanes under structure: 4,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 29.1m (95.5ft)

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Structure Number: 6906,  Location: 2.6 MI W OF JCT TH 53 (Lat: 47.518319,  Lng: -92.615011),  Route carried "under" structure: County highway 102,  Year Built: 1970,  Structure Length: 7.04m (23.10ft),  Average Daily Traffic: 2,450 (year 2003),  Features Intersected: CSAH 102,  Facility Carried by Structure: US 169 NB
Minimum Vertical Clearance: 5.36m (17.59ft),  Kilometerpoint: 0.000,  Lanes on structure: 2,  Lanes under structure: 4,  Material/Design: Prestressed concrete,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 29.1m (95.5ft)