Structure 81010800000000 · Rock Island County, IL

19th ST Nb-moline over Fai 74

Carries 19th ST Nb-moline over Fai 74, .6 Mi S 23rd AVE.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT234 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

234 ft end to end, longest span 123 ft: about 3 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.

Built197155 years old
Length234.3 ft71.4 m
Daily traffic4,600counted 2015
Last inspectedDecember 2024every 24 months

Location

StateIllinois
CountyRock Island
Location.6 Mi S 23rd AVE
Carries19th ST Nb-moline
CrossesFai 74
Coordinates41.48431, -90.49823

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length234.3 ft (71.4 m)
Max Span123.0 ft (37.5 m)
Deck Width42.3 ft (12.9 m)
Deck Area921.1 sq m
Main Spans2
Year Built1971

Traffic

Avg Daily Traffic4,600 (2015)
Truck Traffic3%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number081010800000000

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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