Structure 29005000000000 · Fulton County, IL

Il 116 over Spoon River

Carries Il 116 over Spoon River, W Edge London Mills.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 2 of 9.

How ratings work
Deck3/9 · Serious
Superstructuresets the rating2/9 · Critical
Substructure5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT798 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9Superstructure 2/9 · sets the ratingSubstructure 5/9

798 ft end to end, longest span 140 ft: about 2.2 football fields. 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.

Built197947 years old
Length797.9 ft243.2 m
Daily traffic1,600counted 2023
Last inspectedJuly 2024every 12 months

Location

StateIllinois
CountyFulton
LocationW Edge London Mills
CarriesIl 116
CrossesSpoon River
Coordinates40.70908, -90.28178

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length797.9 ft (243.2 m)
Max Span140.1 ft (42.7 m)
Deck Width35.1 ft (10.7 m)
Deck Area2602.2 sq m
Main Spans3
Year Built1979

Traffic

Avg Daily Traffic1,600 (2023)
Truck Traffic18%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number029005000000000

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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