Bridge Type
Main Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Bituminous [6]
Bridge Dimensions
Length: 13.1 m = 43.0 ft
Main Spans: 1 at 13.1 m = 43.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 5.2 m = 17.1 ft (2 Lanes) and Out-To-Out: 5.7 m = 18.7 ft for a 8.8 m = 28.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Silver Creek [73940]: Cass County [027], Michigan [26]
Owned by County Highway Agency [02], DOT District: 5
1 MI N OF M-62
Condition
Deck: Fair [5]
Superstructure: Poor [4]
Substructure: Poor [4]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 22.7 metric ton = 25.0 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 13.6 metric ton = 15.0 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Meets minimum tolerable limits to be left in place as is [4]
Deck Geometry: Basically intolerable requiring high priority of corrrective action [3]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Equal to present minimum criteria [6] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: October 2020 [1020] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 32 km = 19.8 mi
Traffic
ADT: 24 (2004) and Trucks: 0%
Future ADT: 36 (In 2024
)