Structure 82305800000000 · St. Clair County, IL

Davis St/ Fau 9301 over Fish Lake

Carries Davis St/ Fau 9301 over Fish Lake, 1.25mi W Ill RTE 3.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT82 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

82 ft end to end, longest span 36 ft. 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.

Built1974rebuilt 2011
Length82.0 ft25 m
Daily traffic400counted 2023
Last inspectedMarch 2024every 48 months

Location

StateIllinois
CountySt. Clair
Location1.25mi W Ill RTE 3
CarriesDavis St/ Fau 9301
CrossesFish Lake
Coordinates38.50392, -90.22867

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length82.0 ft (25 m)
Max Span36.1 ft (11 m)
Deck Width30.2 ft (9.2 m)
Deck Area230 sq m
Main Spans3
Year Built1974 (reconstructed 2011)

Traffic

Avg Daily Traffic400 (2023)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number082305800000000

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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