Structure 10002100000000 · Champaign County, IL

I-74 over Cn Railwy & Tr 158/oak S

Carries I-74 over Cn Railwy & Tr 158/oak S, Champaign.

Overall conditionGood

Set by its lowest-rated component: Deck at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT725 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

725 ft end to end, longest span 225 ft: about 2.0 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.

Built1956rebuilt 2020
Length725.1 ft221 m
Daily traffic48,900counted 2023
Last inspectedSeptember 2023every 24 months

Location

StateIllinois
CountyChampaign
LocationChampaign
CarriesI-74
CrossesCn Railwy & Tr 158/oak S
Coordinates40.13485, -88.23118

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length725.1 ft (221 m)
Max Span225.4 ft (68.7 m)
Deck Width121.1 ft (36.9 m)
Deck Area8154.9 sq m
Main Spans4
Year Built1956 (reconstructed 2020)

Traffic

Avg Daily Traffic48,900 (2023)
Truck Traffic19%
Lanes On Bridge6
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number010002100000000

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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