Structure 39319300000000 · Jackson County, IL

Tr 170 over Camp Creek

Carries Tr 170 over Camp Creek, W1/2 Sec 13 T8s R3w.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT51 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

51 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 box-beam bridge.

Built198937 years old
Length51.2 ft15.6 m
Daily traffic75counted 2022
Last inspectedDecember 2022every 48 months

Location

StateIllinois
CountyJackson
LocationW1/2 Sec 13 T8s R3w
CarriesTr 170
CrossesCamp Creek
Coordinates37.82619, -89.39142

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length51.2 ft (15.6 m)
Max Span48.9 ft (14.9 m)
Deck Width24.3 ft (7.4 m)
Deck Area115.4 sq m
Main Spans1
Year Built1989

Traffic

Avg Daily Traffic75 (2022)
Truck Traffic45%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2022
Inspection FrequencyEvery 48 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number039319300000000

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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