Structure 57592200000000 · McLean County, IL

Tr 29a over Rooks Creek Tr 2

Carries Tr 29a over Rooks Creek Tr 2, 2.8 Mi Sse Weston.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT81 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

81 ft end to end, longest span 30 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.

Built198343 years old
Length81.0 ft24.7 m
Daily traffic75counted 2024
Last inspectedDecember 2023every 48 months

Location

StateIllinois
CountyMcLean
Location2.8 Mi Sse Weston
CarriesTr 29a
CrossesRooks Creek Tr 2
Coordinates40.71372, -88.60886

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length81.0 ft (24.7 m)
Max Span29.9 ft (9.1 m)
Deck Width25.9 ft (7.9 m)
Deck Area195.1 sq m
Main Spans3
Year Built1983

Traffic

Avg Daily Traffic75 (2024)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 48 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number057592200000000

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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