Structure 359190 · Wright County, IA

Buchanan AVE over Boone River

Carries Buchanan AVE over Boone River, 093262004.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure and Substructure at 0 of 9.

How ratings work
Decksets the rating0/9 · Failed
Superstructuresets the rating0/9 · Failed
Substructuresets the rating0/9 · Failed
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT128 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 0/9Superstructure 0/9Substructure 0/9

128 ft end to end. 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.

Built1912114 years old
Length128.0 ft39 m
Daily traffic35counted 2022
Last inspectedMay 2022every 24 months

Location

StateIowa
CountyWright
Location093262004
CarriesBuchanan AVE
CrossesBoone River
Coordinates42.85717, -93.94623

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length128.0 ft (39 m)
Max Span96.1 ft (29.3 m)
Deck Width15.7 ft (4.8 m)
Deck Area187.2 sq m
Main Spans1
Year Built1912

Traffic

Avg Daily Traffic35 (2022)
Lanes On Bridge1

Inspection & Ownership

Last InspectionMay 2022
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical8 — Stable, low risk
Structure Number000000000359190

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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