Structure 45615000000000 · Kane County, IL

Main Street over Fox River

Carries Main Street over Fox River, 0.3 Mi E. Of Il 31.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT216 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

216 ft end to end, longest span 53 ft: about 3 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 box-beam bridge.

Built1935rebuilt 2006
Length215.9 ft65.8 m
Daily traffic15,500counted 2023
Last inspectedOctober 2024every 24 months

Location

StateIllinois
CountyKane
Location0.3 Mi E. Of Il 31
CarriesMain Street
CrossesFox River
Coordinates42.10838, -88.28971

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length215.9 ft (65.8 m)
Max Span53.5 ft (16.3 m)
Deck Width47.9 ft (14.6 m)
Deck Area960.7 sq m
Main Spans4
Year Built1935 (reconstructed 2006)

Traffic

Avg Daily Traffic15,500 (2023)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number045615000000000

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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