Structure 99013500000000 · Will County, IL

Ill 7 Frnt. RD over Desplaines Riv

Carries Ill 7 Frnt. RD over Desplaines Riv, .36m E Of Ill 53.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT603 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

603 ft end to end, longest span 98 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.

Built1957rebuilt 2020
Length603.0 ft183.8 m
Daily traffic475counted 2023
Last inspectedMarch 2024every 24 months

Location

StateIllinois
CountyWill
Location.36m E Of Ill 53
CarriesIll 7 Frnt. RD
CrossesDesplaines Riv
Coordinates41.59258, -88.06957

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length603.0 ft (183.8 m)
Max Span98.1 ft (29.9 m)
Deck Width36.1 ft (11 m)
Deck Area2021.8 sq m
Main Spans8
Year Built1957 (reconstructed 2020)

Traffic

Avg Daily Traffic475 (2023)
Truck Traffic48%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number099013500000000

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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