Structure 45309600000000 · Kane County, IL

Kirk Road over Union Pacific R.r.

Carries Kirk Road over Union Pacific R.r., 1 Mi E Geneva.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,376 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 6/9

1,376 ft end to end, longest span 87 ft: about 3.8 football fields. 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.

Built197452 years old
Length1376.3 ft419.5 m
Daily traffic29,300counted 2023
Last inspectedJune 2024every 24 months

Location

StateIllinois
CountyKane
Location1 Mi E Geneva
CarriesKirk Road
CrossesUnion Pacific R.r.
Coordinates41.88241, -88.27816

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1376.3 ft (419.5 m)
Max Span86.9 ft (26.5 m)
Deck Width62.0 ft (18.9 m)
Deck Area7928.6 sq m
Main Spans18
Year Built1974

Traffic

Avg Daily Traffic29,300 (2023)
Truck Traffic8%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number045309600000000

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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