Structure 45202500000000 · Kane County, IL

Il 25 over Brewster Creek

Carries Il 25 over Brewster Creek, 4.6 M N Of Il 64.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT52 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

52 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.

Built200224 years old
Length52.5 ft16 m
Daily traffic10,700counted 2023
Last inspectedJuly 2023every 48 months

Location

StateIllinois
CountyKane
Location4.6 M N Of Il 64
CarriesIl 25
CrossesBrewster Creek
Coordinates41.97306, -88.28092

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length52.5 ft (16 m)
Max Span49.9 ft (15.2 m)
Deck Width42.7 ft (13 m)
Deck Area208 sq m
Main Spans1
Year Built2002

Traffic

Avg Daily Traffic10,700 (2023)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number045202500000000

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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