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: Latex Concrete or similar additive [3]
Bridge Dimensions
Length: 121.9 m = 400.0 ft
Main Spans: 5 at 36.5 m = 119.8 ft
Approach Spans: 0
Skew: 15
Width, Roadway: 18.3 m = 60.0 ft (4 Lanes) and Out-To-Out: 22.7 m = 74.5 ft for a 21.9 m = 71.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0.3 m = 1.0 ft
Location
Spring Lake [75820]: Ottawa County [139], Michigan [26]
Owned by State Highway Agency [01], DOT District: 3
0.2 MI E OF US-31
Condition
Deck: Fair [5]
Superstructure: Fair [5]
Substructure: Good [7]
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: 42.8 metric ton = 47.1 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: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present desirable criteria [8] and Bridge is scour critical; bridge foundations determined to be unstable. [3]
Inspections
Date: August 2020 [0820] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.3 km = 0.8 mi
Traffic
ADT: 18995 (2007) and Trucks: 6%
Future ADT: 26381 (In 2018
)