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Nearby Bridges in NBI 2021: 1


ILL 97 over SANGAMON R OVERFLOW (Route: 97)
Num:65000300000000x
Open: no restriction [A]
Built: 1938, Reconstructed: 1988
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: Other [9]
Bridge Dimensions
Length: 242.9 m = 797.0 ft
Main Spans: 12 at 23.8 m = 78.1 ft
Approach Spans: 0
Skew: 0
Width, Roadway: 9.8 m = 32.2 ft (2 Lanes) and Out-To-Out: 10.7 m = 35.1 ft for a 11 m = 36.1 ft approaching roadway.
Vertical Clearance: 99.99 m = 328.1 ft and Navigational Clearance: 0 = N/A
Location
Unknown [00000]: Menard County [129], Illinois [17]
Owned by State Highway Agency [01], DOT District: 6
.5 MI SE SANGAMON R.
Condition
Deck: Satisfactory [6]
Superstructure: Satisfactory [6]
Substructure: Satisfactory [6]
Loading
Design:
Operating: 61.2 metric ton = 67.3 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Inventory: 36.6 metric ton = 40.3 tons (Load Factor (LF) rating reported by rating factor (RF) method using MS18 loading [6])
Appraisal
Structural: Equal to present minimum criteria [6]
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 assessed or calculated scour condition. [5]
Inspections
Date: March 2020 [0320] and Frequency: 24
Future Work
Work Needed:
Bridge Detour: 4 km = 2.5 mi
Traffic
ADT: 1800 (2019) and Trucks: 13%
Future ADT: 1833 (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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