Structure 60324300000000 · Madison County, IL

Davis Ln/ Mss 6160 over S Br Little Piasa

Carries Davis Ln/ Mss 6160 over S Br Little Piasa, 2.8 Mi NW Godfrey.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT37 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 37 ft across with 3 openings. 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, so those are drawn as typical for a culvert.

Built197848 years old
Length37.1 ft11.3 m
Daily traffic400counted 2021
Last inspectedJanuary 2022every 48 months

Location

StateIllinois
CountyMadison
Location2.8 Mi NW Godfrey
CarriesDavis Ln/ Mss 6160
CrossesS Br Little Piasa
Coordinates38.98929, -90.22548

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length37.1 ft (11.3 m)
Max Span11.2 ft (3.4 m)
Deck Area65.5 sq m
Main Spans3
Year Built1978

Traffic

Avg Daily Traffic400 (2021)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2022
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number060324300000000

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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