Structure 59327400000000 · Macoupin County, IL

Township Road 354 over Sugar Creek

Carries Township Road 354 over Sugar Creek, 4.5 Mi West Virden.

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
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT84 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

84 ft end to end, longest span 27 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.

Built198145 years old
Length84.3 ft25.7 m
Daily traffic125counted 2021
Last inspectedMarch 2023every 24 months

Location

StateIllinois
CountyMacoupin
Location4.5 Mi West Virden
CarriesTownship Road 354
CrossesSugar Creek
Coordinates39.50568, -89.86013

Physical Characteristics

MaterialConcrete
DesignChannel Beam
Total Length84.3 ft (25.7 m)
Max Span27.2 ft (8.3 m)
Deck Width33.1 ft (10.1 m)
Deck Area259.6 sq m
Main Spans3
Year Built1981

Traffic

Avg Daily Traffic125 (2021)
Truck Traffic33%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number059327400000000

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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