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Nearby Bridges in NBI 2021: 1


ILL 4 over CAHOKIA CREEK (Route: 4)
Num:59001000000000x
Open: no restriction [A]
Built: 1921, Reconstructed: 1997
Historic: Bridge is not eligible for the NRHP. [5]

Google Streetview (If Available)

Rough Distance: 0.2 Miles (0.3 Kilometers)

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:
Bridge Dimensions
Length: 94.2 m = 309.1 ft
Main Spans: 4 at 26 m = 85.3 ft
Approach Spans: 0
Skew: 25
Width, Roadway: 10.8 m = 35.4 ft (2 Lanes) and Out-To-Out: 11.8 m = 38.7 ft for a 10.8 m = 35.4 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Macoupin County [117], Illinois [17]
Owned by State Highway Agency [01], DOT District: 6
1.0 M N STAUNTON
Condition
Deck: Satisfactory [6]
Superstructure: Good [7]
Substructure: Good [7]
Loading
Design: MS 18 / HS 20 [5]
Operating: 75.2 metric ton = 82.7 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 45 metric ton = 49.5 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: Somewhat better than minimum adequacy to tolerate being left in place as is [5]
Road Alignment: Equal to present desirable criteria [8]
Waterway: Superior to present desirable criteria [9] and Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Inspections
Date: February 2020 [0220] and Frequency: 48
Future Work
Work Needed:
Bridge Detour: 0.6 km = 0.4 mi
Traffic
ADT: 2700 (2019) and Trucks: 4%
Future ADT: 3323 (In 2032 )

Special Bridge Conditions Legend: R - Former location of relocated bridge. ! - At risk for demolition or destruction. X - Confirmed demolished or collapsed. S  - Dismantled and/or in storage. L -  Severe loss of historic integrity due to alteration.

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