Structure 193360 · Jackson County, IA

Local over Small Creek

Carries Local over Small Creek, 085e21704.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 2 of 9.

How ratings work
Deck5/9 · Fair
Superstructure5/9 · Fair
Substructuresets the rating2/9 · Critical
Channelnot part of overall2/9 · Critical
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
23 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 2/9 · sets the rating

23 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built194086 years old
Length23.0 ft7 m
Daily traffic11counted 2022
Last inspectedMarch 2016every 12 months

Location

StateIowa
CountyJackson
Location085e21704
CarriesLocal
CrossesSmall Creek
Coordinates42.16804, -90.74526

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length23.0 ft (7 m)
Max Span21.0 ft (6.4 m)
Deck Width16.1 ft (4.9 m)
Deck Area34.3 sq m
Main Spans1
Year Built1940

Traffic

Avg Daily Traffic11 (2022)
Lanes On Bridge1

Inspection & Ownership

Last InspectionMarch 2016
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000193360

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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