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: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 26.5 m = 86.9 ft
Main Spans: 2 at 13.1 m = 43.0 ft
Approach Spans: 0
Skew: 30
Width, Roadway: 7 m = 23.0 ft (2 Lanes) and Out-To-Out: 7.7 m = 25.3 ft for a 10.1 m = 33.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Seneca [72440]: Lenawee County [091], Michigan [26]
Owned by County Highway Agency [02], DOT District: 6
0.2 MI W OF M-156
Condition
Deck: Poor [4]
Superstructure: Critical [2]
Substructure: Good [7]
Loading
Design: M 13.5 / H 15 [2]
Operating: 3.2 metric ton = 3.5 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 0 metric ton = 0.0 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural:
Deck Geometry: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for assessed or calculated scour conditions; field review indicates action is required. [4]
Inspections
Date: February 2020 [0220] and Frequency: 24
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 0.6 km = 0.4 mi
Traffic
ADT: 130 (2012) and Trucks: 2%
Future ADT: 300 (In 2031
)