Structure 10003300000000 · Champaign County, IL

I-74 Ramp17.79&17. over I-74 & Rmp 17.17

Carries I-74 Ramp17.79&17. over I-74 & Rmp 17.17, E Of Urbana.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT219 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

219 ft end to end, longest span 74 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.

Built1960rebuilt 1991
Length218.8 ft66.7 m
Daily traffic16,350counted 2023
Last inspectedNovember 2024every 24 months

Location

StateIllinois
CountyChampaign
LocationE Of Urbana
CarriesI-74 Ramp17.79&17.
CrossesI-74 & Rmp 17.17
Coordinates40.12161, -88.17319

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length218.8 ft (66.7 m)
Max Span74.1 ft (22.6 m)
Deck Width57.1 ft (17.4 m)
Deck Area1160.6 sq m
Main Spans4
Year Built1960 (reconstructed 1991)

Traffic

Avg Daily Traffic16,350 (2023)
Truck Traffic7%
Lanes On Bridge3
Lanes Under Bridge4

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number010003300000000

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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