Bridge Type
Main Span(s): Steel [3] Girder and floorbeam system [03]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Epoxy Overlay [5]
Bridge Dimensions
Length: 146.3 m = 480.0 ft
Main Spans: 5 at 30.5 m = 100.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 17.4 m = 57.1 ft (4 Lanes) and Out-To-Out: 19.9 m = 65.3 ft for a 21.3 m = 69.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Bertrand [07920]: Berrien County [021], Michigan [26]
Owned by State Highway Agency [01], DOT District: 5
0.8 MI S OF NILES
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 54.1 metric ton = 59.5 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 32.1 metric ton = 35.3 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
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: May 2020 [0520] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.5 km = 0.3 mi
Traffic
ADT: 11300 (2013) and Trucks: 10%
Future ADT: 21042 (In 2018
)
