Structure 50012500000000 · LaSalle County, IL

Ms 6460 (e 6th Rd) over Fai 80

Carries Ms 6460 (e 6th Rd) over Fai 80, 4.4 Mi E Of Il 251.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT205 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 5/9 · sets the ratingSubstructure 6/9

205 ft end to end, longest span 60 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.

Built196165 years old
Length205.1 ft62.5 m
Daily traffic275counted 2016
Last inspectedMarch 2024every 24 months

Location

StateIllinois
CountyLaSalle
Location4.4 Mi E Of Il 251
CarriesMs 6460 (e 6th Rd)
CrossesFai 80
Coordinates41.36784, -89.04838

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length205.1 ft (62.5 m)
Max Span60.0 ft (18.3 m)
Deck Width29.9 ft (9.1 m)
Deck Area568.8 sq m
Main Spans4
Year Built1961

Traffic

Avg Daily Traffic275 (2016)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number050012500000000

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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