Bridge Type
Main Span(s): Wood or timber [7] Arch - Deck [11]
Approach Span(s): Wood or timber [7] Stringer/Multi-beam or girder [02]
Deck: Wood or Timber [8] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 46.4 m = 152.2 ft
Main Spans: 1 at 24.1 m = 79.1 ft
Approach Spans: 2
Skew: 0
Width, Roadway: 11.6 m = 38.1 ft (2 Lanes) and Out-To-Out: 12.6 m = 41.3 ft for a 10.4 m = 34.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Eagle River [23740]: Keweenaw County [083], Michigan [26]
Owned by State Highway Agency [01], DOT District: 1
IN EAGLE RIVER
Condition
Deck: Good [7]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: MS 22.5 / HS 25 or greater [9]
Operating: 62.9 metric ton = 69.2 tons (Allowable Stress (AS) rating reported by rating factor (RF) method using MS18 loading [7])
Inventory: 44.1 metric ton = 48.5 tons (Allowable Stress (AS) rating reported by rating factor (RF) method using MS18 loading [7])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Superior to present desirable criteria [9]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Better than present minimum criteria [7] 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:
Bridge Detour: 3.2 km = 2.0 mi
Traffic
ADT: 60 (2013) and Trucks: 5%
Future ADT: 69 (In 2033
)