Bridge Type
Main Span(s): Steel continuous [4] Stringer/Multi-beam or girder [02]
Approach Span(s): Steel [3] Girder and floorbeam system [03]
Deck: Concrete Cast-in-Place [1] with Wearing Surface:
Bridge Dimensions
Length: 506.2 m = 1660.8 ft
Main Spans: 3 at 90.6 m = 297.3 ft
Approach Spans: 6
Skew: 6
Width, Roadway: 9 m = 29.5 ft (2 Lanes) and Out-To-Out: 12.1 m = 39.7 ft for a 9 m = 29.5 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 14.3 m = 46.9 ft
Location
Unknown [03575]: La Salle County [099], Illinois [17]
Owned by State Highway Agency [01], DOT District: 3
.41 M S OF US 6
Condition
Deck: Good [7]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 52.2 metric ton = 57.4 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 31.1 metric ton = 34.2 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Better than present minimum criteria [7]
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: May 2020 [0520] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 1.6 km = 1.0 mi
Traffic
ADT: 3450 (2020) and Trucks: 10%
Future ADT: 4691 (In 2032
)