Structure 60006300000000 · Madison County, IL

Il 3 over Nsrr

Carries Il 3 over Nsrr, 0.6mi N Of Il 143.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT294 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

294 ft end to end, longest span 89 ft: about 4 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.

Built1947rebuilt 1994
Length294.0 ft89.6 m
Daily traffic9,950counted 2023
Last inspectedSeptember 2023every 24 months

Location

StateIllinois
CountyMadison
Location0.6mi N Of Il 143
CarriesIl 3
CrossesNsrr
Coordinates38.86590, -90.11177

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length294.0 ft (89.6 m)
Max Span88.9 ft (27.1 m)
Deck Width75.1 ft (22.9 m)
Deck Area2051.8 sq m
Main Spans4
Year Built1947 (reconstructed 1994)

Traffic

Avg Daily Traffic9,950 (2023)
Truck Traffic11%
Lanes On Bridge4

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number060006300000000

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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