Structure 69315100000000 · Morgan County, IL

Fau 8173 College A over Mauvaise Terre CR

Carries Fau 8173 College A over Mauvaise Terre CR, .25 Mi E Johnson.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT153 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 4/9 · sets the ratingSubstructure 5/9

153 ft end to end, longest span 51 ft: about 2 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 box-beam bridge.

Built197551 years old
Length152.9 ft46.6 m
Daily traffic2,150counted 2024
Last inspectedMay 2022every 24 months

Location

StateIllinois
CountyMorgan
Location.25 Mi E Johnson
CarriesFau 8173 College A
CrossesMauvaise Terre CR
Coordinates39.73235, -90.20687

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length152.9 ft (46.6 m)
Max Span50.9 ft (15.5 m)
Deck Width31.2 ft (9.5 m)
Deck Area442.7 sq m
Main Spans3
Year Built1975

Traffic

Avg Daily Traffic2,150 (2024)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2022
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number069315100000000

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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