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: 25.5 m = 83.7 ft
Main Spans: 1 at 25 m = 82.0 ft
Approach Spans: 0
Skew: 20
Width, Roadway: 9.6 m = 31.5 ft (2 Lanes) and Out-To-Out: 10 m = 32.8 ft for a 9.6 m = 31.5 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Brockway [10820]: St. Clair County [147], Michigan [26]
Owned by County Highway Agency [02], DOT District: 4
SEC. 8-9 BROCKWAY TWP.
Condition
Deck: Very Good [8]
Superstructure: Satisfactory [6]
Substructure: Very Good [8]
Loading
Design: MS 18 / HS 20 [5]
Operating: 55.7 metric ton = 61.3 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Inventory: 43.1 metric ton = 47.4 tons (Load and Resistance Factor Rating (LRFR) rating reported by rating factor (RF) method using HL-93 loadings [8])
Appraisal
Structural: Equal to present minimum criteria [6]
Deck Geometry: Equal to present minimum criteria [6]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: January 2021 [0121] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 200 (1999) and Trucks: 6%
Future ADT: 440 (In 2019
)