Structure 27005200000000 · Ford County, IL

Fai 57 Sbl over Big Four Ditch

Carries Fai 57 Sbl over Big Four Ditch, 2.37 Mi S Of Ill 9.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT281 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

281 ft end to end, longest span 56 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built196858 years old
Length280.8 ft85.6 m
Daily traffic10,550counted 2023
Last inspectedFebruary 2024every 24 months

Location

StateIllinois
CountyFord
Location2.37 Mi S Of Ill 9
CarriesFai 57 Sbl
CrossesBig Four Ditch
Coordinates40.42154, -88.11934

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length280.8 ft (85.6 m)
Max Span55.8 ft (17 m)
Deck Width36.1 ft (11 m)
Deck Area941.6 sq m
Main Spans5
Year Built1968

Traffic

Avg Daily Traffic10,550 (2023)
Truck Traffic31%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number027005200000000

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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