Structure 54435100000000 · Logan County, IL

Tr 175 over Salt Creek Tributary

Carries Tr 175 over Salt Creek Tributary, 5 Mi S 2 Mi E Linc..

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT31 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 31 ft across with 2 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.

Built198343 years old
Length31.2 ft9.5 m
Daily traffic100counted 2022
Last inspectedJanuary 2022every 48 months

Location

StateIllinois
CountyLogan
Location5 Mi S 2 Mi E Linc.
CarriesTr 175
CrossesSalt Creek Tributary
Coordinates40.06640, -89.29165

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length31.2 ft (9.5 m)
Max Span15.4 ft (4.7 m)
Deck Width24.0 ft (7.3 m)
Deck Area69.3 sq m
Main Spans2
Year Built1983

Traffic

Avg Daily Traffic100 (2022)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2022
Inspection FrequencyEvery 48 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number054435100000000

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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