Bridge Type
Main Span(s): Steel continuous [4] Arch - Thru [12]
Approach Span(s): Steel continuous [4] Girder and floorbeam system [03]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:
Bridge Dimensions
Length: 1755.6 m = 5760.1 ft
Main Spans: 3 at 257.6 m = 845.2 ft
Approach Spans: 36
Skew: 0
Width, Roadway: 8.5 m = 27.9 ft (2 Lanes) and Out-To-Out: 9.3 m = 30.5 ft for a 8.5 m = 27.9 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 14.9 m = 48.9 ft
Location
Unknown [00000]: Jo Daviess County [085], Illinois [17]
Owned by State Highway Agency [01], DOT District: 2
IN DUBUQUE
Condition
Deck: Good [7]
Superstructure: Fair [5]
Substructure: Satisfactory [6]
Loading
Design: MS 18 / HS 20 [5]
Operating: 32.4 metric ton = 35.6 tons (Allowable Stress (AS) rating reported by rating factor (RF) method using MS18 loading [7])
Inventory: 32.4 metric ton = 35.6 tons (Allowable Stress (AS) rating reported by rating factor (RF) method using MS18 loading [7])
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: Equal to present minimum criteria [6]
Waterway: Superior to present desirable criteria [9] and Countermeasures have been installed to mitigate an existing problem with scour. [7]
Inspections
Date: October 1999 [1099] 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: 1.1 km = 0.7 mi
Traffic
ADT: 18100 (2019) and Trucks: 10%
Future ADT: 18600 (In 2040
)
