Bridge Type
Main Span(s): Steel continuous [4] Stayed girder [14]
Approach Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Deck: Concrete Cast-in-Place [1] with Wearing Surface: Integral Concrete (separate non-modified layer of concrete added to structural deck) [2]
Bridge Dimensions
Length: 1374.1 m = 4508.4 ft
Main Spans: 3 at 274.3 m = 900.0 ft
Approach Spans: 16
Skew: 0
Width, Roadway: 9.8 m = 32.2 ft (2 Lanes) and Out-To-Out: 14.2 m = 46.6 ft for a 9.8 m = 32.2 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 18.3 m = 60.0 ft
Location
Belle Prairie [04780]: Adams County [001], Illinois [17]
Owned by State Highway Agency [01], DOT District: 6
W EDGE DWNTWN QUINCY
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Fair [5]
Loading
Design: MS 18 / HS 20 [5]
Operating: 67.1 metric ton = 73.8 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 40.5 metric ton = 44.6 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: Equal to present desirable criteria [8]
Waterway: Equal to present desirable criteria [8] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: August 2020 [0820] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 5.1 km = 3.2 mi
Traffic
ADT: 8700 (2019) and Trucks: 11%
Future ADT: 9738 (In 2032
)