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
)