Structure 45204100000000 · Kane County, IL

Il 72 over Tyler Creek

Carries Il 72 over Tyler Creek, 0.11 M E Of Il 47.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT36 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 36 ft across with 2 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.

Built201511 years old
Length35.8 ft10.9 m
Daily traffic11,900counted 2023
Last inspectedNovember 2021every 48 months

Location

StateIllinois
CountyKane
Location0.11 M E Of Il 47
CarriesIl 72
CrossesTyler Creek
Coordinates42.08863, -88.45451

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length35.8 ft (10.9 m)
Max Span17.4 ft (5.3 m)
Deck Area176.6 sq m
Main Spans2
Year Built2015

Traffic

Avg Daily Traffic11,900 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number045204100000000

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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