Structure 31002200000000 · Greene County, IL

US 67 over Macoupin Creek

Carries US 67 over Macoupin Creek, 4.8 M S Jct 108-67.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT537 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 6/9

537 ft end to end, longest span 87 ft: about 7 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 multi-beam bridge.

Built196957 years old
Length537.1 ft163.7 m
Daily traffic4,750counted 2023
Last inspectedMarch 2023every 24 months

Location

StateIllinois
CountyGreene
Location4.8 M S Jct 108-67
CarriesUS 67
CrossesMacoupin Creek
Coordinates39.23532, -90.39518

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length537.1 ft (163.7 m)
Max Span86.9 ft (26.5 m)
Deck Width45.9 ft (14 m)
Deck Area2291.8 sq m
Main Spans7
Year Built1969

Traffic

Avg Daily Traffic4,750 (2023)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number031002200000000

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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