Structure 99830100000000 · Will County, IL

Olympic Boulevard over Rock Run Creek

Carries Olympic Boulevard over Rock Run Creek, .19 Mi W Crossroads.

Overall conditionGood

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

How ratings work
Decksets the rating9/9 · Excellent
Superstructuresets the rating9/9 · Excellent
Substructuresets the rating9/9 · Excellent
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT510 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

510 ft end to end, longest span 150 ft: about 7 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.

Built20233 years old
Length509.8 ft155.4 m
Daily traffic500counted 2024
Last inspectedNovember 2024every 24 months

Location

StateIllinois
CountyWill
Location.19 Mi W Crossroads
CarriesOlympic Boulevard
CrossesRock Run Creek
Coordinates41.49469, -88.18618

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length509.8 ft (155.4 m)
Max Span149.9 ft (45.7 m)
Deck Width49.5 ft (15.1 m)
Deck Area2346.5 sq m
Main Spans4
Year Built2023

Traffic

Avg Daily Traffic500 (2024)
Truck Traffic80%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number099830100000000

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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