Structure 99339000000000 · Will County, IL

County Line RD over Trim Crk

Carries County Line RD over Trim Crk, 1m W Of Il1.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT100 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

100 ft end to end. 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 or the layout of the shorter spans, so those are drawn as typical for a multi-beam bridge.

Built200521 years old
Length100.1 ft30.5 m
Daily traffic2,400counted 2021
Last inspectedApril 2021every 48 months

Location

StateIllinois
CountyWill
Location1m W Of Il1
CarriesCounty Line RD
CrossesTrim Crk
Coordinates41.29697, -87.64430

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length100.1 ft (30.5 m)
Max Span97.4 ft (29.7 m)
Deck Width47.2 ft (14.4 m)
Deck Area439.2 sq m
Main Spans1
Year Built2005

Traffic

Avg Daily Traffic2,400 (2021)
Truck Traffic24%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2021
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number099339000000000

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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