Structure 89502300000000 · Stephenson County, IL

Flansburg RD over Br Of Pecatonica Riv

Carries Flansburg RD over Br Of Pecatonica Riv, 0.7 Mi N US RT 20.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT37 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 37 ft across with 2 openings. 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, so those are drawn as typical for a culvert.

Built195769 years old
Length36.7 ft11.2 m
Daily traffic300counted 2024
Last inspectedDecember 2023every 24 months

Location

StateIllinois
CountyStephenson
Location0.7 Mi N US RT 20
CarriesFlansburg RD
CrossesBr Of Pecatonica Riv
Coordinates42.33768, -89.72963

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length36.7 ft (11.2 m)
Max Span17.1 ft (5.2 m)
Deck Area95.2 sq m
Main Spans2
Year Built1957

Traffic

Avg Daily Traffic300 (2024)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number089502300000000

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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