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: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 41.1 m = 134.8 ft
Main Spans: 3 at 13.7 m = 44.9 ft
Approach Spans: 0
Skew: 30
Width, Roadway: 11.6 m = 38.1 ft (2 Lanes) and Out-To-Out: 13.3 m = 43.6 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
Bridgehampton [10420]: Sanilac County [151], Michigan [26]
Owned by County Highway Agency [02], DOT District: 4
SEC 29-30 BRIDGEHAMPTON
Condition
Deck: Fair [5]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design: M 18 / H 20 [4]
Operating: 58.6 metric ton = 64.5 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 35 metric ton = 38.5 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Equal to present minimum criteria [6]
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: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: June 2020 [0620] and Frequency: 24
Future Work
Work Needed: Bridge rehabilitation because of general structure deterioration or inadequate strength. [35]
Bridge Detour: 1 km = 0.6 mi
Traffic
ADT: 3325 (2010) and Trucks: 12%
Future ADT: 6005 (In 2030
)
