Structure 54310 · Wright County, IA

US 69 over Iowa River

Carries US 69 over Iowa River, 1.4 Mi. S Of S Jct SR C20.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT216 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 5/9 · sets the rating

216 ft end to end, longest span 82 ft: 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 multi-beam bridge.

Built1933rebuilt 1968
Length215.9 ft65.8 m
Daily traffic3,210counted 2022
Last inspectedFebruary 2024every 24 months

Location

StateIowa
CountyWright
Location1.4 Mi. S Of S Jct SR C20
CarriesUS 69
CrossesIowa River
Coordinates42.83935, -93.61686

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length215.9 ft (65.8 m)
Max Span82.0 ft (25 m)
Deck Width57.4 ft (17.5 m)
Deck Area1151.5 sq m
Main Spans3
Year Built1933 (reconstructed 1968)

Traffic

Avg Daily Traffic3,210 (2022)
Truck Traffic14%
Lanes On Bridge4

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical5 — Stable for scour
Structure Number000000000054310

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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