Structure 45630500000000 · Kane County, IL

Eagle Road over Tyler Creek

Carries Eagle Road over Tyler Creek, .3 Mi W Mclean BLVD.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
24 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 4/9 · sets the ratingSubstructure 5/9

24 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built196759 years old
Length23.6 ft7.2 m
Daily traffic150counted 2023
Last inspectedApril 2024every 24 months

Location

StateIllinois
CountyKane
Location.3 Mi W Mclean BLVD
CarriesEagle Road
CrossesTyler Creek
Coordinates42.04655, -88.31482

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length23.6 ft (7.2 m)
Max Span20.7 ft (6.3 m)
Deck Width25.9 ft (7.9 m)
Deck Area56.9 sq m
Main Spans1
Year Built1967

Traffic

Avg Daily Traffic150 (2023)
Truck Traffic25%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number045630500000000

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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