Structure 81203200000000 · Rock Island County, IL

Il 5 / John Deere over Stream

Carries Il 5 / John Deere over Stream, 1mi E 70th ST Moline.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT25 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 25 ft across with 2 openings. Lengths and the car 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, so those are drawn as typical for a culvert.

Built199927 years old
Length25.3 ft7.7 m
Daily traffic11,600counted 2023
Last inspectedAugust 2021every 48 months

Location

StateIllinois
CountyRock Island
Location1mi E 70th ST Moline
CarriesIl 5 / John Deere
CrossesStream
Coordinates41.46959, -90.42743

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length25.3 ft (7.7 m)
Max Span10.8 ft (3.3 m)
Deck Area93.9 sq m
Main Spans2
Year Built1999

Traffic

Avg Daily Traffic11,600 (2023)
Truck Traffic7%
Lanes On Bridge4

Inspection & Ownership

Last InspectionAugust 2021
Inspection FrequencyEvery 48 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number081203200000000

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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