FHWA NBI 2024 Inspection record Public-domain dataset

232ND ST

Carrying 232ND ST over BUCK CREEK

093030903, Clayton, Iowa

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
23 t Inventory load rating

Bridge Snapshot: 232ND ST

The 232ND ST bridge in Clayton, Iowa carries 232ND ST over BUCK CREEK. It was built in 1973, making it 53 years old today. The structure is built primarily of steel and spans 1 section, stretching 37.8 meters (124 feet) end to end. Daily traffic averages 113 vehicles, placing it in the lower-traffic tier of Iowa bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show culvert at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 22.5 metric tons.

Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.

How 232ND ST compares

▼ 8.4
Load rating vs Iowa average (30.9 t)
Bottom 27%
Lower load rating than 73% of Iowa bridges
214
Bridges in Clayton · 21 in Poor condition
232ND ST 22.5 t
Iowa average 30.9 t

Live comparison across Iowa.

Historical Sufficiency Rating

PlainBridge-computed
89.8 / 100 - historical 80–100 band
Structural adequacy /55
44.9
Serviceability /30
30.0
Essentiality /15
15.0
Special reductions
0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Culvert
6/9
Fair (5–6)
Inventory Load Rating
22.5 t
NBI inventory level (metric tons)
Overall Condition
Fair

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
1973
Material
Steel
Number of Spans
1
Structure Length
37.8 m (124 ft)
Owner
County Highway Agency
Avg Daily Traffic
113 vehicles/day
Structure Number
000000000119470

How to read this record

This page shows what the last federal inspection recorded, not whether 232ND ST is safe to cross today. Here is how to use it.

  • NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
  • Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
  • Compare 232ND ST against other structures in Clayton and across Iowa. Iowa bridges
  • Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge

Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.

Frequently Asked Questions

What do the condition ratings mean for 232ND ST?

232ND ST in Clayton, Iowa on the FHWA's 0–9 scale.

How often is 232ND ST inspected?

232ND ST's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 113 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. 232ND ST is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for 232ND ST?

232ND ST has an NBI inventory load rating of 22.5 metric tons.

Who is responsible for maintaining 232ND ST?

232ND ST is owned and maintained by County Highway Agency.

How old is 232ND ST and does age affect safety?

232ND ST was built in 1973, making it 53 years old.

Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.