Bridge Type
Main Span(s): Prestressed concrete [5] Box beam or girders - Multiple [05]
Approach Span(s): Other [00]
Deck: Concrete Precast Panels [2] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 21.3 m = 69.9 ft
Main Spans: 1 at 20.7 m = 67.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 8.2 m = 26.9 ft (2 Lanes) and Out-To-Out: 8.6 m = 28.2 ft for a 7.3 m = 24.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Ironwood [41080]: Gogebic County [053], Michigan [26]
Owned by County Highway Agency [02], DOT District: 1
SEC 5 IRONWOOD TWP
Condition
Deck: Fair [5]
Superstructure: Good [7]
Substructure: Very Good [8]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 73.2 metric ton = 80.5 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 44.1 metric ton = 48.5 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: September 2020 [0920] and Frequency: 24
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 1 km = 0.6 mi
Traffic
ADT: 54 (1998) and Trucks: 0%
Future ADT: 75 (In 2018
)