Structure 22009200000000 · DuPage County, IL

I-290 SB over I-355

Carries I-290 SB over I-355, 1.0 M S Of Il 19.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT608 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

608 ft end to end, longest span 231 ft: about 1.7 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.

Built1971rebuilt 1998
Length607.9 ft185.3 m
Daily traffic47,000counted 2024
Last inspectedSeptember 2024every 24 months

Location

StateIllinois
CountyDuPage
Location1.0 M S Of Il 19
CarriesI-290 SB
CrossesI-355
Coordinates41.96101, -88.02680

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length607.9 ft (185.3 m)
Max Span231.0 ft (70.4 m)
Deck Width45.9 ft (14 m)
Deck Area2594.2 sq m
Main Spans4
Year Built1971 (reconstructed 1998)

Traffic

Avg Daily Traffic47,000 (2024)
Truck Traffic21%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number022009200000000

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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