Structure 79001800000000 · Randolph County, IL

Ill 153 over Marys River

Carries Ill 153 over Marys River, 1 Mi N Of Eden.

Overall conditionPoor

Set by its lowest-rated component: Deck at 3 of 9.

How ratings work
Decksets the rating3/9 · Serious
Superstructure5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT34 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 5/9Substructure 7/9

34 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 multi-beam bridge.

Built193492 years old
Length34.1 ft10.4 m
Daily traffic1,600counted 2023
Last inspectedJune 2024every 12 months

Location

StateIllinois
CountyRandolph
Location1 Mi N Of Eden
CarriesIll 153
CrossesMarys River
Coordinates38.13595, -89.65060

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length34.1 ft (10.4 m)
Max Span33.1 ft (10.1 m)
Deck Width38.7 ft (11.8 m)
Deck Area122.7 sq m
Main Spans1
Year Built1934

Traffic

Avg Daily Traffic1,600 (2023)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number079001800000000

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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