Structure 11324800000000 · Christian County, IL

Tr 310 over Willow Branch

Carries Tr 310 over Willow Branch, 1mi N Moweaqua.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure and Substructure at 0 of 9.

How ratings work
Decksets the rating0/9 · Failed
Superstructuresets the rating0/9 · Failed
Substructuresets the rating0/9 · Failed
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT48 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 0/9Superstructure 0/9Substructure 0/9

48 ft end to end. 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.

Built1900126 years old
Length47.9 ft14.6 m
Daily traffic50counted 2021
Last inspectedNovember 2024every 24 months

Location

StateIllinois
CountyChristian
Location1mi N Moweaqua
CarriesTr 310
CrossesWillow Branch
Coordinates39.63462, -89.04384

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length47.9 ft (14.6 m)
Max Span47.6 ft (14.5 m)
Deck Width14.1 ft (4.3 m)
Deck Area62.8 sq m
Main Spans3
Year Built1900

Traffic

Avg Daily Traffic50 (2021)
Truck Traffic2%
Lanes On Bridge1

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number011324800000000

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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