Structure 224250 · Louisa County, IA

FM over Long Creek

Carries FM over Long Creek, 074051204.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT178 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

178 ft end to end, longest span 39 ft: about 2 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.

Built1965rebuilt 2017
Length178.1 ft54.3 m
Daily traffic290counted 2022
Last inspectedMay 2024every 24 months

Location

StateIowa
CountyLouisa
Location074051204
CarriesFM
CrossesLong Creek
Coordinates41.23194, -91.38737

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length178.1 ft (54.3 m)
Max Span39.0 ft (11.9 m)
Deck Width29.9 ft (9.1 m)
Deck Area494.1 sq m
Main Spans5
Year Built1965 (reconstructed 2017)

Traffic

Avg Daily Traffic290 (2022)
Truck Traffic19%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000224250

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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