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: 25.9 m = 85.0 ft
Main Spans: 1 at 24 m = 78.7 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 7.9 m = 25.9 ft (2 Lanes) and Out-To-Out: 8.6 m = 28.2 ft for a 7.9 m = 25.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Grant [34420]: St. Clair County [147], Michigan [26]
Owned by County Highway Agency [02], DOT District: 4
SEC. 6-7 GRANT TWP.
Condition
Deck: Very Good [8]
Superstructure: Good [7]
Substructure: Very Good [8]
Loading
Design: MS 18 / HS 20 [5]
Operating: 71.6 metric ton = 78.8 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 32.7 metric ton = 36.0 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Better than present minimum criteria [7]
Deck Geometry: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Waterway: Better than present minimum criteria [7] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: March 1999 [399] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.3 km = 0.2 mi
Traffic
ADT: 138 (2007) and Trucks: 5%
Future ADT: 250 (In 2027
)
