Structure 32467000000000 · Grundy County, IL

Tr-91b Valerio RD over Claypool DR Ditch

Carries Tr-91b Valerio RD over Claypool DR Ditch, .05 Mi W Will RD.

Overall conditionPoor

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

How ratings work
Deck4/9 · Poor
Superstructure3/9 · Serious
Substructuresets the rating2/9 · Critical
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT46 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 3/9Substructure 2/9 · sets the rating

46 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 slab bridge.

Built1916110 years old
Length45.9 ft14 m
Daily traffic100counted 2020
Last inspectedAugust 2021every 24 months

Location

StateIllinois
CountyGrundy
Location.05 Mi W Will RD
CarriesTr-91b Valerio RD
CrossesClaypool DR Ditch
Coordinates41.29584, -88.24778

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length45.9 ft (14 m)
Max Span44.0 ft (13.4 m)
Deck Width22.3 ft (6.8 m)
Deck Area95.2 sq m
Main Spans1
Year Built1916

Traffic

Avg Daily Traffic100 (2020)
Truck Traffic2%
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2021
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical2 — Bridge closed (monitoring)
Structure Number032467000000000

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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