Structure 6424100000000 · Bureau County, IL

Tr 10-b over King Creek

Carries Tr 10-b over King Creek, W Edge Of Mineral.

Overall conditionPoor

Set by its lowest-rated component: Superstructure and Substructure at 3 of 9.

How ratings work
Deck4/9 · Poor
Superstructuresets the rating3/9 · Serious
Substructuresets the rating3/9 · Serious
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT72 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 3/9 · sets the ratingSubstructure 3/9 · sets the rating

72 ft end to end. 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 through truss.

Built1899127 years old
Length71.9 ft21.9 m
Daily traffic10counted 2010
Last inspectedNovember 2023every 24 months

Location

StateIllinois
CountyBureau
LocationW Edge Of Mineral
CarriesTr 10-b
CrossesKing Creek
Coordinates41.38347, -89.84299

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length71.9 ft (21.9 m)
Max Span68.9 ft (21 m)
Deck Width16.1 ft (4.9 m)
Deck Area107.3 sq m
Main Spans1
Year Built1899

Traffic

Avg Daily Traffic10 (2010)
Lanes On Bridge1

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical5 — Stable for scour
Structure Number006424100000000

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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