Structure 38300200000000 · Iroquois County, IL

Ch 9 Fas 334 over Spring CR

Carries Ch 9 Fas 334 over Spring CR, 1 Mi E Jct Ch9 Us45.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT104 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

104 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 multi-beam bridge.

Built195274 years old
Length104.0 ft31.7 m
Daily traffic500counted 2022
Last inspectedJuly 2024every 24 months

Location

StateIllinois
CountyIroquois
Location1 Mi E Jct Ch9 Us45
CarriesCh 9 Fas 334
CrossesSpring CR
Coordinates40.60532, -88.01244

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length104.0 ft (31.7 m)
Max Span39.0 ft (11.9 m)
Deck Width33.1 ft (10.1 m)
Deck Area320.2 sq m
Main Spans3
Year Built1952

Traffic

Avg Daily Traffic500 (2022)
Truck Traffic16%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number038300200000000

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.

Nearby Bridges