Structure 232211 · Madison County, IA

Local RD over North Clanton Creek

Carries Local RD over North Clanton Creek, 074280806.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck5/9 · Fair
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT95 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 4/9 · sets the rating

95 ft end to end, longest span 39 ft. Lengths and the car 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.

Built1937rebuilt 1977
Length95.1 ft29 m
Daily traffic60counted 2022
Last inspectedAugust 2023every 24 months

Location

StateIowa
CountyMadison
Location074280806
CarriesLocal RD
CrossesNorth Clanton Creek
Coordinates41.21862, -94.09622

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length95.1 ft (29 m)
Max Span39.0 ft (11.9 m)
Deck Width20.0 ft (6.1 m)
Deck Area176.9 sq m
Main Spans3
Year Built1937 (reconstructed 1977)

Traffic

Avg Daily Traffic60 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000232211

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.

Nearby Bridges