Structure 53552700000000 · Livingston County, IL

Tr 145 over Unnamed Trib

Carries Tr 145 over Unnamed Trib, 805e 1500n.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

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

A culvert 23 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built200521 years old
Length23.0 ft7 m
Daily traffic75counted 2023
Last inspectedJuly 2022every 48 months

Location

StateIllinois
CountyLivingston
Location805e 1500n
CarriesTr 145
CrossesUnnamed Trib
Coordinates40.84294, -88.77596

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length23.0 ft (7 m)
Max Span10.5 ft (3.2 m)
Deck Width27.9 ft (8.5 m)
Deck Area59.5 sq m
Main Spans2
Year Built2005

Traffic

Avg Daily Traffic75 (2023)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2022
Inspection FrequencyEvery 48 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number053552700000000

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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