Structure 45500000000000 · Kane County, IL

Il 25 over Poplar Creek

Carries Il 25 over Poplar Creek, 0.4 M S Of US 20.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT54 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

54 ft end to end, longest span 22 ft. 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 slab bridge.

Built198937 years old
Length53.8 ft16.4 m
Daily traffic15,900counted 2023
Last inspectedJanuary 2025every 24 months

Location

StateIllinois
CountyKane
Location0.4 M S Of US 20
CarriesIl 25
CrossesPoplar Creek
Coordinates42.01434, -88.26930

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length53.8 ft (16.4 m)
Max Span21.7 ft (6.6 m)
Deck Width60.4 ft (18.4 m)
Deck Area301.8 sq m
Main Spans3
Year Built1989

Traffic

Avg Daily Traffic15,900 (2023)
Truck Traffic15%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number045500000000000

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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