Structure 60481 · Adams County, IA

140th Street over East Nodaway River

Carries 140th Street over East Nodaway River, 073322801.

Overall conditionPoor

Set by its lowest-rated component: Deck and Substructure at 3 of 9.

How ratings work
Decksets the rating3/9 · Serious
Superstructure5/9 · Fair
Substructuresets the rating3/9 · Serious
Channelnot part of overall3/9 · Serious
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT54 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 5/9Substructure 3/9 · sets the rating

54 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 multi-beam bridge.

Built1900rebuilt 1973
Length54.1 ft16.5 m
Daily traffic11counted 2022
Last inspectedFebruary 2024every 12 months

Location

StateIowa
CountyAdams
Location073322801
Carries140th Street
CrossesEast Nodaway River
Coordinates41.10032, -94.54680

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length54.1 ft (16.5 m)
Max Span52.2 ft (15.9 m)
Deck Width16.1 ft (4.9 m)
Deck Area80.8 sq m
Main Spans1
Year Built1900 (reconstructed 1973)

Traffic

Avg Daily Traffic11 (2022)
Lanes On Bridge1

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000060481

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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