Structure 38306100000000 · Iroquois County, IL

Tr 22b over Louis Creek

Carries Tr 22b over Louis Creek, 1 Mi N 1.5 W Buckley.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT29 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 29 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.

Built199729 years old
Length28.5 ft8.7 m
Daily traffic25counted 2022
Last inspectedJuly 2024every 24 months

Location

StateIllinois
CountyIroquois
Location1 Mi N 1.5 W Buckley
CarriesTr 22b
CrossesLouis Creek
Coordinates40.61017, -88.06217

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length28.5 ft (8.7 m)
Max Span8.5 ft (2.6 m)
Deck Area68.7 sq m
Main Spans3
Year Built1997

Traffic

Avg Daily Traffic25 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number038306100000000

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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