Structure 99019800000000 · Will County, IL

Maple RD over I- 80

Carries Maple RD over I- 80, 1.9m E Of 355 Alg 80.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 3 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating3/9 · Serious
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT431 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 3/9 · sets the ratingSubstructure 6/9

431 ft end to end, longest span 135 ft: about 6 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.

Built1966rebuilt 1999
Length431.4 ft131.5 m
Daily traffic8,000counted 2023
Last inspectedFebruary 2024every 12 months

Location

StateIllinois
CountyWill
Location1.9m E Of 355 Alg 80
CarriesMaple RD
CrossesI- 80
Coordinates41.54909, -87.92010

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length431.4 ft (131.5 m)
Max Span135.2 ft (41.2 m)
Deck Width29.5 ft (9 m)
Deck Area1183.5 sq m
Main Spans4
Year Built1966 (reconstructed 1999)

Traffic

Avg Daily Traffic8,000 (2023)
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge6

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number099019800000000

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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