Structure 140281 · Delaware County, IA

Local 120 AVE over Buffalo Creek Overflow

Carries Local 120 AVE over Buffalo Creek Overflow, 087062804.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 30 ft across with 4 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.

Built200323 years old
Length29.9 ft9.1 m
Daily traffic44counted 2022
Last inspectedFebruary 2024every 24 months

Location

StateIowa
CountyDelaware
Location087062804
CarriesLocal 120 AVE
CrossesBuffalo Creek Overflow
Coordinates42.31169, -91.55863

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length29.9 ft (9.1 m)
Max Span4.9 ft (1.5 m)
Deck Area71.9 sq m
Main Spans4
Year Built2003

Traffic

Avg Daily Traffic44 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000140281

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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