Bridge Type
Main Span(s): Steel [3] Movable - Bascule [16]
Approach Span(s): Steel [3] Stringer/Multi-beam or girder [02]
Deck: Other [9] with Wearing Surface: Other [9]
Bridge Dimensions
Length: 88.2 m = 289.4 ft
Main Spans: 1 at 53 m = 173.9 ft
Approach Spans: 4
Skew: 0
Width, Roadway: 12.8 m = 42.0 ft (4 Lanes) and Out-To-Out: 18.3 m = 60.0 ft for a 12.8 m = 42.0 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 4 m = 13.1 ft
Location
Unknown [02865]: Will County [197], Illinois [17]
Owned by State Highway Agency [01], DOT District: 1
0.8 M W OF IL 171
Condition
Deck: Fair [5]
Superstructure: Serious [3]
Substructure: Fair [5]
Loading
Design: MS 18+Mod / HS 20+Mod [6]
Operating: 23 metric ton = 25.3 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 13.9 metric ton = 15.3 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Basically intolerable requiring high priority of replacement [2]
Deck Geometry: Basically intolerable requiring high priority of replacement [2]
Road Alignment: Equal to present minimum criteria [6]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: June 2020 [0620] and Frequency: 12
Future Work
Work Needed: Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Bridge Detour: 0.2 km = 0.1 mi
Traffic
ADT: 17600 (2019) and Trucks: 3%
Future ADT: 12471 (In 2032
)