Bridge Type
Main Span(s): Steel [3] Arch - Deck [11]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Monolithic Concrete (concurrently placed with structural deck) [1]
Bridge Dimensions
Length: 70.7 m = 232.0 ft
Main Spans: 1 at 39 m = 128.0 ft
Approach Spans: 2
Skew: 0
Width, Roadway: 12.8 m = 42.0 ft (2 Lanes) and Out-To-Out: 13.8 m = 45.3 ft for a 12.2 m = 40.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Covington [18600]: Baraga County [013], Michigan [26]
Owned by State Highway Agency [01], DOT District: 1
1.4 MI S OF ALBERTA
Condition
Deck: Satisfactory [6]
Superstructure: Fair [5]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 59 metric ton = 64.9 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 35.3 metric ton = 38.8 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: Equal to present minimum criteria [6]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: June 1999 [699] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 8 km = 5.0 mi
Traffic
ADT: 3585 (2007) and Trucks: 17%
Future ADT: 3800 (In 2020
)
