Bridge Type
Main Span(s): Steel continuous [4] 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: 28.6 m = 93.8 ft
Main Spans: 3 at 10.9 m = 35.8 ft
Approach Spans: 0
Skew: 19
Width, Roadway: 9.1 m = 29.9 ft (2 Lanes) and Out-To-Out: 12.3 m = 40.4 ft for a 16.4 m = 53.8 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0.3 m = 1.0 ft
Location
Marine City [51600]: St. Clair County [147], Michigan [26]
Owned by State Highway Agency [01], DOT District: 4
IN MARINE CITY
Condition
Deck: Fair [5]
Superstructure: Good [7]
Substructure: Fair [5]
Loading
Design: M 18 / H 20 [4]
Operating: 61.6 metric ton = 67.8 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 36.9 metric ton = 40.6 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: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: March 1999 [399] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 0.5 km = 0.3 mi
Traffic
ADT: 7474 (2007) and Trucks: 2%
Future ADT: 8662 (In 2018
)
