Structure 255160 · Montgomery County, IA

Local RD over West Nodaway River

Carries Local RD over West Nodaway River, 072362803.

Overall conditionPoor

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

How ratings work
Decksets the rating3/9 · Serious
Superstructure4/9 · Poor
Substructuresets the rating3/9 · Serious
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT204 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 4/9Substructure 3/9 · sets the rating

204 ft end to end: about 3 semi-trucks nose to tail. Lengths and the semi-truck 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 through truss.

Built194086 years old
Length204.1 ft62.2 m
Daily traffic45counted 2021
Last inspectedMay 2024every 12 months

Location

StateIowa
CountyMontgomery
Location072362803
CarriesLocal RD
CrossesWest Nodaway River
Coordinates41.00855, -94.99516

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length204.1 ft (62.2 m)
Max Span120.1 ft (36.6 m)
Deck Width19.7 ft (6 m)
Deck Area373.2 sq m
Main Spans1
Year Built1940

Traffic

Avg Daily Traffic45 (2021)
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000255160

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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