Bridge Type
Main Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Approach Span(s): Other [00]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Other [9]
Bridge Dimensions
Length: 1019.8 m = 3346.0 ft
Main Spans: 15 at 89.9 m = 295.0 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 18.9 m = 62.0 ft (4 Lanes) and Out-To-Out: 23.1 m = 75.8 ft for a 18.3 m = 60.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 15.8 m = 51.8 ft
Location
Unknown [02405]: Hancock County [067], Illinois [17]
Owned by State Highway Agency [01], DOT District: 6
HAMILTN:IL-KEOKUK:IA
Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 56.1 metric ton = 61.7 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 33.4 metric ton = 36.7 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 desirable criteria [8]
Waterway: Equal to present minimum criteria [6] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: September 2020 [0920] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 12.9 km = 8.0 mi
Traffic
ADT: 11400 (2019) and Trucks: 5%
Future ADT: 12600 (In 2032
)
