Structure 45302700000000 · Kane County, IL

Randall Road over Ferson Creek

Carries Randall Road over Ferson Creek, 0.2 Mi S Of Crane RD.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT162 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

162 ft end to end, longest span 58 ft: about 2 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 multi-beam bridge.

Built1955rebuilt 1983
Length161.7 ft49.3 m
Daily traffic29,500counted 2023
Last inspectedApril 2024every 24 months

Location

StateIllinois
CountyKane
Location0.2 Mi S Of Crane RD
CarriesRandall Road
CrossesFerson Creek
Coordinates41.93357, -88.34122

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length161.7 ft (49.3 m)
Max Span58.1 ft (17.7 m)
Deck Width71.2 ft (21.7 m)
Deck Area1069.8 sq m
Main Spans3
Year Built1955 (reconstructed 1983)

Traffic

Avg Daily Traffic29,500 (2023)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number045302700000000

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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