Bridge Type
Main Span(s): Steel [3] Truss - Deck [09]
Approach Span(s): Concrete continuous [2] Tee beam [04]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Epoxy Overlay [5]
Bridge Dimensions
Length: 195.4 m = 641.1 ft
Main Spans: 3 at 91.4 m = 299.9 ft
Approach Spans: 2
Skew: 0
Width, Roadway: 9.1 m = 29.9 ft (2 Lanes) and Out-To-Out: 13.7 m = 44.9 ft for a 9.2 m = 30.2 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Hendricks [37660]: Mackinac County [097], Michigan [26]
Owned by State Highway Agency [01], DOT District: 1
4.3 MI NW OF BREVORT
Condition
Deck: Good [7]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: M 13.5 / H 15 [2]
Operating: 62.9 metric ton = 69.2 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 37.6 metric ton = 41.4 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: Meets minimum tolerable limits to be left in place as is [4]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present minimum criteria [6] and Bridge foundations (including piles) on dry land well above flood water elevations. [9]
Inspections
Date: June 2020 [0620] and Frequency: 15
Future Work
Work Needed:
Bridge Detour: 5.6 km = 3.5 mi
Traffic
ADT: 4450 (2017) and Trucks: 10%
Future ADT: 4925 (In 2037
)
