Structure 31503300000000 · Greene County, IL

Tr 25 over Birch Creek

Carries Tr 25 over Birch Creek, 3 Mi NE Roodhouse.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT87 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

87 ft end to end, longest span 38 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 channel-beam bridge.

Built1901rebuilt 1980
Length86.9 ft26.5 m
Daily traffic50counted 2022
Last inspectedFebruary 2023every 24 months

Location

StateIllinois
CountyGreene
Location3 Mi NE Roodhouse
CarriesTr 25
CrossesBirch Creek
Coordinates39.49847, -90.30943

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length86.9 ft (26.5 m)
Max Span38.1 ft (11.6 m)
Deck Width26.2 ft (8 m)
Deck Area212 sq m
Main Spans3
Year Built1901 (reconstructed 1980)

Traffic

Avg Daily Traffic50 (2022)
Truck Traffic16%
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number031503300000000

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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