Structure 57780000000000 · McLean County, IL

Vernon Avenue over Sugar Creek Main Br

Carries Vernon Avenue over Sugar Creek Main Br, 0.5 Mi W Bus 55.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT106 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

106 ft end to end, longest span 39 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 slab bridge.

Built1971rebuilt 2011
Length105.6 ft32.2 m
Daily traffic11,600counted 2024
Last inspectedDecember 2021every 48 months

Location

StateIllinois
CountyMcLean
Location0.5 Mi W Bus 55
CarriesVernon Avenue
CrossesSugar Creek Main Br
Coordinates40.50267, -88.96282

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length105.6 ft (32.2 m)
Max Span39.4 ft (12 m)
Deck Width65.3 ft (19.9 m)
Deck Area640.8 sq m
Main Spans3
Year Built1971 (reconstructed 2011)

Traffic

Avg Daily Traffic11,600 (2024)
Truck Traffic4%
Lanes On Bridge4

Inspection & Ownership

Last InspectionDecember 2021
Inspection FrequencyEvery 48 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number057780000000000

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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