Structure 91007300000000 · Union County, IL

US 51-fap 322 over Drury Cr-cnic Rr

Carries US 51-fap 322 over Drury Cr-cnic Rr, 2.7 Mi S Jackson Co.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructure7/9 · Good
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT312 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 7/9

312 ft end to end, longest span 80 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.

Built200521 years old
Length312.0 ft95.1 m
Daily traffic5,500counted 2023
Last inspectedSeptember 2024every 48 months

Location

StateIllinois
CountyUnion
Location2.7 Mi S Jackson Co
CarriesUS 51-fap 322
CrossesDrury Cr-cnic Rr
Coordinates37.56113, -89.23039

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length312.0 ft (95.1 m)
Max Span80.4 ft (24.5 m)
Deck Width43.6 ft (13.3 m)
Deck Area1264.8 sq m
Main Spans4
Year Built2005

Traffic

Avg Daily Traffic5,500 (2023)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number091007300000000

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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