Bridge Type
Main Span(s): Steel [3] Truss - Thru [10]
Approach Span(s): Other [00]
Deck: Wood or Timber [8] with Wearing Surface: Wood or Timber [7]
Bridge Dimensions
Length: 9.1 m = 29.9 ft
Main Spans: 1 at 7.9 m = 25.9 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 4.9 m = 16.1 ft (2 Lanes) and Out-To-Out: 5.4 m = 17.7 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
Limestone [47540]: Alger County [003], Michigan [26]
Owned by County Highway Agency [02], DOT District: 1
2 MI W OF DIFFIN
Condition
Deck: Critical [2]
Superstructure: Poor [4]
Substructure: Imminent Failure [1]
Loading
Design:
Operating: 0 metric ton = 0.0 tons (Load Factor(LF) [1])
Inventory: 0 metric ton = 0.0 tons (Load Factor(LF) [1])
Appraisal
Structural:
Deck Geometry: N/A [N]
Road Alignment: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Waterway: Better than present minimum criteria [7] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: September 1999 [999] 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: 6.4 km = 4.0 mi
Traffic
ADT: 50 (1995) and Trucks: 0%
Future ADT: 58 (In 2015
)
