Structure 86761 · Butler County, IA

FM over Beaver Creek

Carries FM over Beaver Creek, 090152804.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT303 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

303 ft end to end, longest span 54 ft: about 4 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 slab bridge.

Built198442 years old
Length303.1 ft92.4 m
Daily traffic1,100counted 2022
Last inspectedApril 2021every 48 months

Location

StateIowa
CountyButler
Location090152804
CarriesFM
CrossesBeaver Creek
Coordinates42.57207, -92.61839

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length303.1 ft (92.4 m)
Max Span54.1 ft (16.5 m)
Deck Width32.2 ft (9.8 m)
Deck Area905.5 sq m
Main Spans6
Year Built1984

Traffic

Avg Daily Traffic1,100 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2021
Inspection FrequencyEvery 48 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000086761

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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