FHWA NBI 2024 Inspection record Public-domain dataset

LOCAL

Carrying LOCAL over E NISHNABOTNA RIVER

081341901, Audubon, Iowa

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
25 t Inventory load rating

Bridge Snapshot: LOCAL

The LOCAL bridge in Audubon, Iowa carries LOCAL over E NISHNABOTNA RIVER. It was built in 1971, making it 55 years old today. The structure is built primarily of steel and spans 1 section, stretching 29.6 meters (97 feet) end to end. Daily traffic averages 5 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 a deck rating of 7/9, superstructure at 6/9, substructure at 6/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 25.3 metric tons.

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

How LOCAL compares

▼ 5.6
Load rating vs Iowa average (30.9 t)
Bottom 34%
Lower load rating than 66% of Iowa bridges
161
Bridges in Audubon · 33 in Poor condition
LOCAL 25.3 t
Iowa average 30.9 t

Live comparison across Iowa.

Historical Sufficiency Rating

PlainBridge-computed
79.8 / 100 - historical 50–79.9 band
Structural adequacy /55
48.8
Serviceability /30
24.0
Essentiality /15
15.0
Special reductions
−8.0

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 How the historical reference is calculated.

Condition Ratings

Deck
7/9
Good (7–9)
Superstructure
6/9
Fair (5–6)
Substructure
6/9
Fair (5–6)
Inventory Load Rating
25.3 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
1971
Material
Steel
Number of Spans
1
Structure Length
29.6 m (97 ft)
Deck Width
6.3 m (21 ft)
Owner
County Highway Agency
Avg Daily Traffic
5 vehicles/day
Structure Number
000000000069215

Condition Analysis

  • The deck (driving surface) rates good at 7/9, with no significant deterioration on file.
  • The superstructure (beams and supports above the deck) rates fair at 6/9, minor deterioration that routine maintenance should address.
  • At 6/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.

How to read this record

This page shows what the last federal inspection recorded, not whether LOCAL 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 LOCAL against other structures in Audubon 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 LOCAL?

LOCAL in Audubon, Iowa has a deck rating of 7/9, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.

How often is LOCAL inspected?

LOCAL'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 5 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. LOCAL 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 LOCAL?

LOCAL has an NBI inventory load rating of 25.3 metric tons.

Who is responsible for maintaining LOCAL?

LOCAL is owned and maintained by County Highway Agency.

How old is LOCAL and does age affect safety?

LOCAL was built in 1971, making it 55 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.