Structure 75318300000000 · Pike County, IL

Tr 512 over Ill River Tributary

Carries Tr 512 over Ill River Tributary, 1.25 Mi N Pearl.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT32 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

32 ft end to end. 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 or the layout of the shorter spans, so those are drawn as typical for a channel-beam bridge.

Built196660 years old
Length32.2 ft9.8 m
Daily traffic50counted 2023
Last inspectedMarch 2023every 24 months

Location

StateIllinois
CountyPike
Location1.25 Mi N Pearl
CarriesTr 512
CrossesIll River Tributary
Coordinates39.48339, -90.60785

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length32.2 ft (9.8 m)
Max Span28.9 ft (8.8 m)
Deck Width26.2 ft (8 m)
Deck Area78.4 sq m
Main Spans1
Year Built1966

Traffic

Avg Daily Traffic50 (2023)
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number075318300000000

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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