Structure 57000800000000 · McLean County, IL

I-55/I-74 NB over Six Pts Rd/fau 6369

Carries I-55/I-74 NB over Six Pts Rd/fau 6369, 1.9 Mi S Jct Ill 9.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT130 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

130 ft end to end, longest span 50 ft. 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.

Built1963rebuilt 1996
Length129.9 ft39.6 m
Daily traffic21,550counted 2023
Last inspectedFebruary 2025every 24 months

Location

StateIllinois
CountyMcLean
Location1.9 Mi S Jct Ill 9
CarriesI-55/I-74 NB
CrossesSix Pts Rd/fau 6369
Coordinates40.45875, -89.02721

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length129.9 ft (39.6 m)
Max Span50.2 ft (15.3 m)
Deck Width65.6 ft (20 m)
Deck Area792 sq m
Main Spans3
Year Built1963 (reconstructed 1996)

Traffic

Avg Daily Traffic21,550 (2023)
Truck Traffic37%
Lanes On Bridge3
Lanes Under Bridge2

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number057000800000000

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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