Structure 60012300000000 · Madison County, IL

Il 111 over Access RD Nsrr

Carries Il 111 over Access RD Nsrr, 1.25 M N 270.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT370 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

370 ft end to end, longest span 85 ft: about 5 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.

Built1940rebuilt 1987
Length370.1 ft112.8 m
Daily traffic4,800counted 2023
Last inspectedApril 2023every 24 months

Location

StateIllinois
CountyMadison
Location1.25 M N 270
CarriesIl 111
CrossesAccess RD Nsrr
Coordinates38.77847, -90.06671

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length370.1 ft (112.8 m)
Max Span85.0 ft (25.9 m)
Deck Width43.3 ft (13.2 m)
Deck Area1489.0 sq m
Main Spans5
Year Built1940 (reconstructed 1987)

Traffic

Avg Daily Traffic4,800 (2023)
Truck Traffic20%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number060012300000000

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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