Bridge Type
Main Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Integral Concrete (separate non-modified layer of concrete added to structural deck) [2]
Bridge Dimensions
Length: 13.7 m = 44.9 ft
Main Spans: 1 at 13.4 m = 44.0 ft
Approach Spans: 0
Skew: 35
Width, Roadway: 6.7 m = 22.0 ft (2 Lanes) and Out-To-Out: 8 m = 26.2 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
Amboy [02020]: Hillsdale County [059], Michigan [26]
Owned by County Highway Agency [02], DOT District: 6
0.02 MI E OF CARPENTER
Condition
Deck: Fair [5]
Superstructure: Poor [4]
Substructure: Satisfactory [6]
Loading
Design: M 18 / H 20 [4]
Operating: 31.1 metric ton = 34.2 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 18.5 metric ton = 20.4 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: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: November 2020 [1120] and Frequency: 12
Future Work
Work Needed:
Bridge Detour: 1.3 km = 0.8 mi
Traffic
ADT: 808 (2013) and Trucks: 0%
Future ADT: 1326 (In 2038
)
