Structure 64002600000000 · Massac County, IL

I 24 EB over Tr 86 Massac CR RD

Carries I 24 EB over Tr 86 Massac CR RD, 4 Mi N Of US 45.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT118 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 8/9

118 ft end to end, longest span 50 ft. Lengths and the car 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.

Built197056 years old
Length118.4 ft36.1 m
Daily traffic9,900counted 2024
Last inspectedJanuary 2024every 24 months

Location

StateIllinois
CountyMassac
Location4 Mi N Of US 45
CarriesI 24 EB
CrossesTr 86 Massac CR RD
Coordinates37.21596, -88.70038

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length118.4 ft (36.1 m)
Max Span49.5 ft (15.1 m)
Deck Width43.6 ft (13.3 m)
Deck Area480.1 sq m
Main Spans3
Year Built1970

Traffic

Avg Daily Traffic9,900 (2024)
Truck Traffic38%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number064002600000000

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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