Bridge Type
Main Span(s): Steel continuous [4] Girder and floorbeam system [03]
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: 117 m = 383.9 ft
Main Spans: 3 at 43.9 m = 144.0 ft
Approach Spans: 0
Skew: 35
Width, Roadway: 10.7 m = 35.1 ft (2 Lanes) and Out-To-Out: 11.6 m = 38.1 ft for a 12.8 m = 42.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Rockland [69140]: Ontonagon County [131], Michigan [26]
Owned by State Highway Agency [01], DOT District: 1
2.0 MI S OF M-26
Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 68 metric ton = 74.8 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 19.8 metric ton = 21.8 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: Equal to present minimum criteria [6]
Road Alignment: Better than present minimum criteria [7]
Waterway: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for assessed or calculated scour condition. [5]
Inspections
Date: July 2020 [0720] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 7.2 km = 4.5 mi
Traffic
ADT: 1122 (2007) and Trucks: 5%
Future ADT: 1909 (In 2018
)
