Bridge Type
Main Span(s): Prestressed concrete [5] Box Beam or girders - Single or Spread [06]
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: 53 m = 173.9 ft
Main Spans: 3 at 26 m = 85.3 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 21.8 m = 71.5 ft (4 Lanes) and Out-To-Out: 22.8 m = 74.8 ft for a 21.8 m = 71.5 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Frenchtown [30820]: Monroe County [115], Michigan [26]
Owned by State Highway Agency [01], DOT District: 6
3.2 MI NE OF M-50
Condition
Deck: Very Good [8]
Superstructure: Excellent [9]
Substructure: Very Good [8]
Loading
Design: Greater than HL93 [B]
Operating: 62.5 metric ton = 68.8 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 44.7 metric ton = 49.2 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Equal to present desirable criteria [8]
Deck Geometry: Better than present minimum criteria [7]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: September 2020 [0920] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 36850 (2013) and Trucks: 18%
Future ADT: 40375 (In 2035
)