Structure 99003100000000 · Will County, IL

Il 126 NB over I- 55

Carries Il 126 NB over I- 55, 3.8 M N Of US 30.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT309 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 6/9

309 ft end to end, longest span 87 ft: about 4 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.

Built1956rebuilt 1992
Length309.4 ft94.3 m
Daily traffic9,200counted 2024
Last inspectedJanuary 2025every 12 months

Location

StateIllinois
CountyWill
Location3.8 M N Of US 30
CarriesIl 126 NB
CrossesI- 55
Coordinates41.63538, -88.16100

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length309.4 ft (94.3 m)
Max Span86.9 ft (26.5 m)
Deck Width32.2 ft (9.8 m)
Deck Area924.1 sq m
Main Spans4
Year Built1956 (reconstructed 1992)

Traffic

Avg Daily Traffic9,200 (2024)
Truck Traffic10%
Lanes On Bridge1
Lanes Under Bridge6

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number099003100000000

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.

Nearby Bridges