Structure 30990100000000 · Gallatin County, IL

Tr 33 over N Fork Saline R

Carries Tr 33 over N Fork Saline R, 2.5 Mi SW Of Omaha.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT306 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9 · sets the ratingSubstructure 8/9

306 ft end to end, longest span 118 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.

Built196561 years old
Length306.1 ft93.3 m
Daily traffic50counted 2023
Last inspectedApril 2023every 24 months

Location

StateIllinois
CountyGallatin
Location2.5 Mi SW Of Omaha
CarriesTr 33
CrossesN Fork Saline R
Coordinates37.86769, -88.35129

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length306.1 ft (93.3 m)
Max Span118.1 ft (36 m)
Deck Width22.0 ft (6.7 m)
Deck Area625.1 sq m
Main Spans3
Year Built1965

Traffic

Avg Daily Traffic50 (2023)
Truck Traffic12%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number030990100000000

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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