Structure 45600200000000 · Kane County, IL

North Av over Fox River

Carries North Av over Fox River, 900 Ft W Ill RTE 25.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT489 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

489 ft end to end, longest span 74 ft: about 7 semi-trucks nose to tail. Lengths and the semi-truck 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 bridge of this kind.

Built1926rebuilt 2002
Length489.2 ft149.1 m
Daily traffic6,650counted 2023
Last inspectedOctober 2023every 24 months

Location

StateIllinois
CountyKane
Location900 Ft W Ill RTE 25
CarriesNorth Av
CrossesFox River
Coordinates41.75223, -88.32172

Physical Characteristics

MaterialConcrete
DesignOther
Total Length489.2 ft (149.1 m)
Max Span74.1 ft (22.6 m)
Deck Width52.5 ft (16 m)
Deck Area2385.6 sq m
Main Spans6
Year Built1926 (reconstructed 2002)

Traffic

Avg Daily Traffic6,650 (2023)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number045600200000000

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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