Structure 52600100000000 · Lee County, IL

Main Street (amboy over Br Of Green River

Carries Main Street (amboy over Br Of Green River, Near Main-locust Int.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT35 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 35 ft across with 3 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.

Built200422 years old
Length35.4 ft10.8 m
Daily traffic1,200counted 2022
Last inspectedJanuary 2025every 48 months

Location

StateIllinois
CountyLee
LocationNear Main-locust Int
CarriesMain Street (amboy
CrossesBr Of Green River
Coordinates41.71534, -89.32415

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length35.4 ft (10.8 m)
Max Span29.9 ft (9.1 m)
Deck Area97.2 sq m
Main Spans3
Year Built2004

Traffic

Avg Daily Traffic1,200 (2022)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number052600100000000

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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