Structure 298600 · Ringgold County, IA

FM over Platte River

Carries FM over Platte River, 070310401.

Overall conditionPoor

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

How ratings work
Deck4/9 · Poor
Superstructure6/9 · Satisfactory
Substructuresets the rating3/9 · Serious
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT128 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 6/9Substructure 3/9 · sets the rating

128 ft end to end, longest span 49 ft. 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 multi-beam bridge.

Built195571 years old
Length128.0 ft39 m
Daily traffic60counted 2022
Last inspectedOctober 2023every 12 months

Location

StateIowa
CountyRinggold
Location070310401
CarriesFM
CrossesPlatte River
Coordinates40.89927, -94.43071

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length128.0 ft (39 m)
Max Span48.9 ft (14.9 m)
Deck Width22.3 ft (6.8 m)
Deck Area265.2 sq m
Main Spans3
Year Built1955

Traffic

Avg Daily Traffic60 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000298600

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.

Nearby Bridges