IL 121 (FAP 320) over JONATHAN CREEK


+39.60065, -88.54632
39°36'02" N, 88°32'47" W


Source: National Bridge Inventory. Information not verified; use at your own risk.
Name:IL 121 (FAP 320) over JONATHAN CREEK
Structure number:070000300000000
Old structure number:000070000315951 (from 1992 edition)
Purpose:Carries highway over waterway
Route classification:Principal Arterial - Other (Rural) [02]
Length of largest span:84.3 ft. [25.7 m]
Total length:223.1 ft. [68.0 m]
Roadway width between curbs:32.8 ft. [10.0 m]
Deck width edge-to-edge:36.1 ft. [11.0 m]
Skew angle:35°
Owner:State Highway Agency [01]
Year built:1967
Historic significance:Bridge is not eligible for the National Register of Historic Places [5]
Design load:MS 18 / HS 20 [5]
Number of main spans:3
Main spans material:Steel continuous [4]
Main spans design:Stringer/Multi-beam or girder [02]
Deck type:Concrete Cast-in-Place [1]
Wearing surface:Bituminous [6]

Latest Available Inspection: January 2017

Good/Fair/Poor Condition:Poor
Status:Open, no restriction [A]
Average daily traffic:5,500 [as of 2015]
Truck traffic:8% of total traffic
Deck condition:Serious [3 out of 9]
Superstructure condition:Poor [4 out of 9]
Substructure condition:Satisfactory [6 out of 9]
Structural appraisal:Meets minimum tolerable limits to be left in place as is [4]
Deck geometry appraisal:Meets minimum tolerable limits to be left in place as is [4]
Water adequacy appraisal:Equal to present desirable criteria [8]
Roadway alignment appraisal:Equal to present desirable criteria [8]
Channel protection:Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]
Scour condition:Bridge foundations determined to be stable for the assessed or calculated scour condition. [8]
Operating rating:61.3 tons [55.7 metric tons]
Inventory rating:36.7 tons [33.4 metric tons]
Sufficiency rating:58.6
Recommended work:Replacement of bridge or other structure because of substandard load carrying capacity or substantial bridge roadway geometry. [31]
Estimated cost of work:$1,124,000

Previous Inspections

DateSuff. RatingConditionDeckSuperstructureSubstructureSD/FOADT
January 201758.6PoorSeriousPoorSatisfactorySD5500
February 201658.6PoorSeriousPoorSatisfactorySD5500
March 201558.6PoorSeriousPoorSatisfactorySD5550
March 201358.0PoorPoorFairSatisfactorySD5700
March 201176.9PoorPoorFairSatisfactorySD5700
March 200976.9PoorPoorFairSatisfactorySD5700
March 200788.1PoorPoorSatisfactorySatisfactorySD5400
April 200390.2GoodGoodGoodGood-5500
April 200192.2GoodGoodGoodGood-5000
March 199992.1GoodGoodGoodGood-5700
March 199764.6PoorGoodGoodPoorSD5900
February 199690.1GoodGoodGoodVery Good-5400
February 199495.2GoodGoodGoodVery Good-5100
February 199295.2GoodGoodGoodVery Good-5100
January 199295.3GoodGoodGoodVery Good-4600

Element Data

Source: National Bridge Elements dataset, 2016 edition. This feature is experimental.
ElementUnitsQuantity1. Good2. Fair3. Poor4. Serious
Steel Closed Web/Box Girderlinear ft.60015405
Steel Girder/Beamlinear ft.1,3386215889435
Reinforced Concrete Decksq. ft.7,887001,9875,900
Reinforced Concrete Pier Walllinear ft.8786100
Reinforced Concrete Abutmentlinear ft.88658150
Reinforced Concrete Pier Caplinear ft.17514714140
Compression Jointlinear ft.8800088
Movable Bearingeach1806102
Fixed Bearingeach60600
Bridge Rail
Reinforced Concrete Bridge Raillinear ft.438043800