Structure 50026100000000 · LaSalle County, IL

Fas 174/ch 9 over I-80 /test RD Access

Carries Fas 174/ch 9 over I-80 /test RD Access, 4.0 M E Of Il 178.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT225 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

225 ft end to end, longest span 118 ft: about 3 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.

Built20215 years old
Length225.4 ft68.7 m
Daily traffic150counted 2020
Last inspectedMay 2023every 24 months

Location

StateIllinois
CountyLaSalle
Location4.0 M E Of Il 178
CarriesFas 174/ch 9
CrossesI-80 /test RD Access
Coordinates41.36803, -88.93334

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length225.4 ft (68.7 m)
Max Span118.4 ft (36.1 m)
Deck Width31.2 ft (9.5 m)
Deck Area652.6 sq m
Main Spans2
Year Built2021

Traffic

Avg Daily Traffic150 (2020)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number050026100000000

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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