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Bridge Statistics for Southgate, Michigan (MI)
Condition, Traffic, Stress, Structural Evaluation, Project Costs


  • National Bridge Inventory (NBI) Statistics
  • 15Number of bridges
  • 125ft / 38.4mTotal length
  • 421,991Total average daily traffic
  • 59,928Total average daily truck traffic
  • National Bridge Inventory (NBI) Registered Bridges for Southgate
  • No street view available for this location

New bridges in Southgate, MI - historical statistics
  • New bridges - historical statistics
  • 11930-1939
  • 41950-1959
  • 81960-1969
  • 11970-1979
  • 12000-2009
Average Bridge Daily Traffic in Southgate, MI
Average Bridge Truck Traffic in Southgate, MI
Bridge Condition - Deck
  • Bridge Condition - Deck
  • 14.3%Excellent
  • 42.9%Very good
  • 42.9%Satisfactory
Bridge Condition - Superstructure
  • Bridge Condition - Superstructure
  • 85.7%Good
  • 14.3%Satisfactory
Bridge Condition - Substructure
  • Bridge Condition - Substructure
  • 28.6%Very good
  • 57.1%Good
  • 14.3%Satisfactory
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Structure Number: 1166,  Location: GIRARD TWP SEC 24 (Lat: 42.022483,  Lng: -84.956908),  Route carried "on" structure: County highway ,  Year Built: 2001,  Status: Open,  Structure Length: 2.04m (6.69ft),  Average Daily Traffic: 40 (year 2004),  Average Future Daily Traffic: 81 (year 2024),  Design Load: HS 20,  Features Intersected: SOUTH BR HOG CREEK,  Facility Carried by Structure: GORBELL ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 4.489,  Lanes on structure: 2,  Owner: County Highway Agency,  Approaching Roadway Width: 6.1m (20.0ft),  Skew: 5 degrees,  Material/Design: Prestressed concrete,  Design/Construction: Box Beam or Girders - Multiple,  Number Of Spans In Main Unit: 1,  Length of Maximum Span: 19.2m (63.0ft),  Curb-To-Curb Width: 9.4m (30.8ft),  Out-to-Out Width: 9.5m (31.2ft)

Condition: Deck: Satisfactory,  Superstructure: Satisfactory,  Substructure: Good,  Channel: Good,  Operating Rating: 56.8 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF),  Inventory Rating: 34.0 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 24 months,  Inspection Date: October 2020,  Wearing Surface/Protective System: Wearing Surface: Bituminous,  Membrane: Preformed Fabric,  Deck Protection: Bituminous
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Structure Number: 11658,  Location: S LTS OF SOUTHGATE (Lat: 42.207897,  Lng: -83.228989),  Route carried "on" structure: Interstate 75,  Year Built: 1966,  Status: Open,  Structure Length: 6.65m (21.82ft),  Average Daily Traffic: 46,853 (year 2015),  Truck Traffic: 20%,  Average Future Daily Traffic: 52,548 (year 2038),  Design Load: HS 20+Mod,  Features Intersected: ALLEN RD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 16.152,  Lanes on structure: 3,  Lanes under structure: 4,  Base Highway Network: Yes (Inventory Route: 159,  Subroute: 10),  Owner: State Highway Agency,  Approaching Roadway Width: 16.4m (53.8ft),  Skew: 4 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 18.9m (62.0ft),  Curb-To-Curb Width: 15.7m (51.5ft),  Out-to-Out Width: 16.6m (54.5ft)

Condition: Deck: Satisfactory,  Superstructure: Good,  Substructure: Good,  Operating Rating: 52.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 31.4 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Underclear: Meets minimum limits,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: July 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Epoxy Overlay
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Structure Number: 11659,  Location: S LTS OF SOUTHGATE (Lat: 42.208256,  Lng: -83.229006),  Route carried "on" structure: Interstate 75,  Year Built: 1966,  Status: Open,  Structure Length: 6.65m (21.82ft),  Average Daily Traffic: 46,853 (year 2015),  Truck Traffic: 20%,  Average Future Daily Traffic: 52,548 (year 2038),  Design Load: HS 20+Mod,  Features Intersected: ALLEN RD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 16.189,  Lanes on structure: 3,  Lanes under structure: 4,  Base Highway Network: Yes (Inventory Route: 159,  Subroute: 6),  Owner: State Highway Agency,  Approaching Roadway Width: 15.7m (51.5ft),  Skew: 4 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 18.9m (62.0ft),  Curb-To-Curb Width: 15.7m (51.5ft),  Out-to-Out Width: 16.6m (54.5ft)

Condition: Deck: Satisfactory,  Superstructure: Good,  Substructure: Satisfactory,  Operating Rating: 52.5 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 31.4 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Equal to present minimum criteria,  Deck Geometry: Somewhat better than minimum adequacy,  Underclear: High priority of corrective action,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Epoxy Overlay
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Structure Number: 1166,  Location: IN SOUTHGATE (Lat: 42.213222,  Lng: -83.222075),  Route carried "on" structure: Interstate 75,  Year Built: 1966,  Year Reconstructed: 2019,  Status: Open,  Structure Length: 6.31m (20.70ft),  Average Daily Traffic: 46,853 (year 2015),  Truck Traffic: 20%,  Average Future Daily Traffic: 52,548 (year 2038),  Design Load: HS 20+Mod,  Features Intersected: NORTH LINE RD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 16.974,  Lanes on structure: 3,  Lanes under structure: 4,  Base Highway Network: Yes (Inventory Route: 159,  Subroute: 10),  Owner: State Highway Agency,  Approaching Roadway Width: 18.3m (60.0ft),  Skew: 4 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 18.3m (60.0ft),  Curb-To-Curb Width: 18.3m (60.0ft),  Out-to-Out Width: 19.3m (63.3ft)

Condition: Deck: Very good,  Superstructure: Good,  Substructure: Very good,  Operating Rating: 71.6 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 42.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Underclear: High priority of corrective action,  Approach Roadway Alignment: Equal to present desirable criteria,  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,  Deck Protection: Epoxy Coated Reinforcing
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Structure Number: 11661,  Location: IN SOUTHGATE (Lat: 42.213214,  Lng: -83.222542),  Route carried "on" structure: Interstate 75,  Year Built: 1966,  Year Reconstructed: 2018,  Status: Open,  Structure Length: 6.31m (20.70ft),  Average Daily Traffic: 46,853 (year 2015),  Truck Traffic: 20%,  Average Future Daily Traffic: 52,548 (year 2038),  Design Load: HS 20+Mod,  Features Intersected: NORTH LINE RD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 16.957,  Lanes on structure: 3,  Lanes under structure: 4,  Base Highway Network: Yes (Inventory Route: 159,  Subroute: 6),  Owner: State Highway Agency,  Approaching Roadway Width: 18.6m (61.0ft),  Skew: 4 degrees,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 4,  Length of Maximum Span: 18.3m (60.0ft),  Curb-To-Curb Width: 18.3m (60.0ft),  Out-to-Out Width: 19.3m (63.3ft)

Condition: Deck: Excellent,  Superstructure: Good,  Substructure: Very good,  Operating Rating: 71.3 metric tons,  Method Used To Determine Operating Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Inventory Rating: 42.8 metric tons,  Method Used To Determine Inventory Rating: Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading,  Structural Evaluation: Better than present minimum criteria,  Deck Geometry: Better than present minimum criteria,  Underclear: High priority of corrective action,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: September 2020,  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: 12189,  Location: BRWNTWNS/PENNSYLVANIA (Lat: 42.182839,  Lng: -83.227836),  Route carried "on" structure: County highway 2057,  Year Built: 1959,  Year Reconstructed: 2019,  Status: Open,  Structure Length: 6.03m (19.78ft),  Average Daily Traffic: 19,876 (year 1995),  Truck Traffic: 8%,  Average Future Daily Traffic: 17,734 (year 2015),  Design Load: HS 20+Mod,  Features Intersected: ALLEN ROAD,  Facility Carried by Structure: TOLEDO ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 1.749,  Lanes on structure: 4,  Lanes under structure: 4,  Base Highway Network: Yes (Inventory Route: 168,  Subroute: 7),  Owner: County Highway Agency,  Approaching Roadway Width: 25.6m (84.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 28.9m (94.8ft),  Curb or Sidewalk Widths: Left: 0.7m (2.3ft),  Right: 0.7m (2.3ft),  Curb-To-Curb Width: 25.6m (84.0ft),  Out-to-Out Width: 27.9m (91.5ft)

Condition: Deck: Very good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 71.3 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: 54.8 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: High priority of corrective action,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 12191,  Location: BRNTWN/STHGTEE/ALLEN (Lat: 42.184300,  Lng: -83.226772),  Route carried "on" structure: County highway 2057,  Year Built: 1959,  Year Reconstructed: 2018,  Status: Open,  Structure Length: 4.36m (14.30ft),  Average Daily Traffic: 15,779 (year 1992),  Truck Traffic: 8%,  Average Future Daily Traffic: 16,568 (year 2015),  Design Load: HS 20+Mod,  Features Intersected: PENNSYLVANIA ROAD,  Facility Carried by Structure: TOLEDO ROAD
Minimum Vertical Clearance: 30.48m (100.00ft),  Kilometerpoint: 1.933,  Lanes on structure: 4,  Lanes under structure: 4,  Base Highway Network: Yes (Inventory Route: 168,  Subroute: 7),  Owner: County Highway Agency,  Approaching Roadway Width: 25.6m (84.0ft),  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Number Of Spans In Main Unit: 3,  Length of Maximum Span: 21.0m (68.9ft),  Curb or Sidewalk Widths: Left: 0.7m (2.3ft),  Right: 0.7m (2.3ft),  Curb-To-Curb Width: 25.6m (84.0ft),  Out-to-Out Width: 27.9m (91.5ft)

Condition: Deck: Very good,  Superstructure: Good,  Substructure: Good,  Operating Rating: 67.7 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: 52.2 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: Better than present minimum criteria,  Deck Geometry: Superior to present desirable criteria,  Underclear: High priority of corrective action,  Approach Roadway Alignment: Equal to present desirable criteria,  Designated Inspection Frequency: Every 24 months,  Inspection Date: March 2021,  Deck Structure Type: Concrete Cast-file-Place,  Wearing Surface/Protective System: Wearing Surface: Monolithic Concrete
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Structure Number: 11658,  Location: S LTS OF SOUTHGATE (Lat: 42.207897,  Lng: -83.228989),  Route carried "under" structure: County highway 2057,  Year Built: 1966,  Structure Length: 0. m,  Average Daily Traffic: 26,000 (year 1994),  Truck Traffic: 12%,  Features Intersected: ALLEN RD,  Facility Carried by Structure: I-75 NB
Minimum Vertical Clearance: 4.29m (14.07ft),  Kilometerpoint: 12.013,  Lanes on structure: 3,  Lanes under structure: 4,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 18.9m (62.0ft)

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Structure Number: 11659,  Location: S LTS OF SOUTHGATE (Lat: 42.208256,  Lng: -83.229006),  Route carried "under" structure: County highway 2057,  Year Built: 1966,  Structure Length: 0. m,  Average Daily Traffic: 26,000 (year 2007),  Truck Traffic: 12%,  Features Intersected: ALLEN RD,  Facility Carried by Structure: I-75 SB
Minimum Vertical Clearance: 4.47m (14.67ft),  Kilometerpoint: 12.053,  Lanes on structure: 3,  Lanes under structure: 4,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 18.9m (62.0ft)

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Structure Number: 1166,  Location: IN SOUTHGATE (Lat: 42.213222,  Lng: -83.222075),  Route carried "under" structure: County highway 2057,  Year Built: 1966,  Structure Length: 0. m,  Average Daily Traffic: 30,000 (year 1994),  Truck Traffic: 15%,  Features Intersected: NORTH LINE RD,  Facility Carried by Structure: I-75 NB
Minimum Vertical Clearance: 4.52m (14.83ft),  Kilometerpoint: 7.020,  Lanes on structure: 3,  Lanes under structure: 4,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 18.3m (60.0ft)

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Structure Number: 11661,  Location: IN SOUTHGATE (Lat: 42.213214,  Lng: -83.222542),  Route carried "under" structure: County highway 2057,  Year Built: 1966,  Structure Length: 0. m,  Average Daily Traffic: 30,000 (year 1994),  Truck Traffic: 15%,  Features Intersected: NORTH LINE RD,  Facility Carried by Structure: I-75 SB
Minimum Vertical Clearance: 4.52m (14.83ft),  Kilometerpoint: 6.982,  Lanes on structure: 3,  Lanes under structure: 4,  Material/Design: Steel continuous,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 18.3m (60.0ft)

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Structure Number: 12038,  Location: ALLEN PK/SOUTHGATE W/I-75 (Lat: 42.227964,  Lng: -83.213019),  Route carried "under" structure: County highway 95000,  Year Built: 1936,  Structure Length: 0. m,  Average Daily Traffic: 19,396 (year 1997),  Truck Traffic: 2%,  Features Intersected: GODDARD ROAD,  Facility Carried by Structure: CONRAIL
Minimum Vertical Clearance: 4.55m (14.93ft),  Kilometerpoint: 1.130,  Lanes under structure: 4,  Material/Design: Steel,  Design/Construction: Girder and Floorbeam System,  Length of Maximum Span: 20.4m (66.9ft)

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Structure Number: 12189,  Location: BRWNTWNS/PENNSYLVANIA (Lat: 42.182839,  Lng: -83.227836),  Route carried "under" structure: County highway 2057,  Year Built: 1959,  Structure Length: 0. m,  Average Daily Traffic: 24,837 (year 1994),  Truck Traffic: 5%,  Features Intersected: ALLEN ROAD,  Facility Carried by Structure: TOLEDO ROAD
Minimum Vertical Clearance: 4.47m (14.67ft),  Kilometerpoint: 9.227,  Lanes on structure: 4,  Lanes under structure: 4,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 28.9m (94.8ft)

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Structure Number: 12191,  Location: BRNTWN/STHGTEE/ALLEN (Lat: 42.184300,  Lng: -83.226772),  Route carried "under" structure: County highway 2057,  Year Built: 1959,  Structure Length: 0. m,  Average Daily Traffic: 19,876 (year 1995),  Truck Traffic: 8%,  Features Intersected: PENNSYLVANIA ROAD,  Facility Carried by Structure: TOLEDO ROAD
Minimum Vertical Clearance: 4.47m (14.67ft),  Kilometerpoint: 15.671,  Lanes on structure: 4,  Lanes under structure: 4,  Material/Design: Steel,  Design/Construction: Stringer/Multi-beam,  Length of Maximum Span: 21.0m (68.9ft)

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Structure Number: 12202,  Location: SOUTHGATE N/EUREKA (Lat: 42.203128,  Lng: -83.206375),  Route carried "under" structure: County highway 2057,  Year Built: 1970,  Structure Length: 0. m,  Average Daily Traffic: 22,775 (year 1992),  Truck Traffic: 5%,  Features Intersected: TOLEDO ROAD,  Facility Carried by Structure: PEDESTRIAN WALKWAY
Minimum Vertical Clearance: 4.90m (16.08ft),  Kilometerpoint: 4.629,  Lanes under structure: 7,  Material/Design: Aluminum, Iron,  Design/Construction: Truss - Thru,  Length of Maximum Span: 33.5m (109.9ft)

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