Structure 69600400000000 · Morgan County, IL

Fau 8193 Clay St. over Town Brook

Carries Fau 8193 Clay St. over Town Brook, On S.clay At Brook.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT31 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

31 ft end to end. Lengths and the car 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 box-beam bridge.

Built197353 years old
Length30.8 ft9.4 m
Daily traffic3,750counted 2024
Last inspectedMay 2022every 24 months

Location

StateIllinois
CountyMorgan
LocationOn S.clay At Brook
CarriesFau 8193 Clay St.
CrossesTown Brook
Coordinates39.72886, -90.22446

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length30.8 ft (9.4 m)
Max Span30.8 ft (9.4 m)
Deck Width54.1 ft (16.5 m)
Deck Area155.1 sq m
Main Spans1
Year Built1973

Traffic

Avg Daily Traffic3,750 (2024)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2022
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number069600400000000

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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