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Nearby Bridges in NBI 2021: 2


CHICAGON MINE RD over CHICAGON CREEK (Route: 0)
Num:4199x
Posted for load [P]
Built: 0, Reconstructed: N/A [0000]
Historic: Bridge is on the NRHP. [1]

Google Streetview (If Available)

Rough Distance: 0 Miles (0 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Other [00]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Gravel [8]
Bridge Dimensions
Length: 8.5 m = 27.9 ft
Main Spans: 1 at 7.6 m = 24.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 4.6 m = 15.1 ft (2 Lanes) and Out-To-Out: 4.9 m = 16.1 ft for a 5.5 m = 18.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Bates [05860]: Iron County [071], Michigan [26]
Owned by County Highway Agency [02], DOT District: 1
1.0 MI WEST USH 2
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Poor [4]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 13.6 metric ton = 15.0 tons ()
Inventory: 8.2 metric ton = 9.0 tons ()
Appraisal
Structural: Basically intolerable requiring high priority of corrrective action [3]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Basically intolerable requiring high priority of replacement [2] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: September 2020 [0920] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.6 km = 0.4 mi
Traffic
ADT: 142 (1994) and Trucks: 0%
Future ADT: 200 (In 2000 )
US-2 over CHICAGOAN CREEK (Route: 2)
Num:4170x
Open: no restriction [A]
Built: 1929, Reconstructed: N/A [0000]
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.5 Miles (0.7 Kilometers)

Bridge Type
Main Span(s): Concrete [1] Tee beam [04]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 9.4 m = 30.8 ft
Main Spans: 1 at 9.4 m = 30.8 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 11 m = 36.1 ft (2 Lanes) and Out-To-Out: 11.5 m = 37.7 ft for a 12.2 m = 40.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Bates [05860]: Iron County [071], Michigan [26]
Owned by State Highway Agency [01], DOT District: 1
9.1 MI W OF CRYSTAL FALLS
Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Poor [4]
Loading
Design: M 13.5 / H 15 [2]
Operating: 64.8 metric ton = 71.3 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 38.9 metric ton = 42.8 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Better than present minimum criteria [7] and "Bridge with ""unknown"" foundation that has not been evaluated for scour. [U]"
Inspections
Date: September 2020 [0920] and Frequency: 18
Future Work
Work Needed:
Bridge Detour: 5.8 km = 3.6 mi
Traffic
ADT: 3653 (2007) and Trucks: 8%
Future ADT: 4070 (In 2018 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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