NB IA 376
Carrying NB IA 376 over DRY CREEK
0.1 mi. N of Jct. SR D12, Woodbury, Iowa
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: NB IA 376
The NB IA 376 bridge in Woodbury, Iowa carries NB IA 376 over DRY CREEK. It was built in 1931, making it 95 years old today. It was last reconstructed in 1972, extending its service life. The structure is built primarily of concrete and spans 1 section, stretching 7.0 meters (23 feet) end to end. Daily traffic averages 3,750 vehicles, placing it in the moderately-trafficked tier of Iowa bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 6/9, substructure at 7/9. 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 37.6 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How NB IA 376 compares
Live comparison across Iowa.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1931
- Last Reconstructed
- 1972
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 7.0 m (23 ft)
- Deck Width
- 16.5 m (54 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 3,750 vehicles/day
- Structure Number
- 000000000053091
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether NB IA 376 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 NB IA 376 against other structures in Woodbury 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 NB IA 376?
NB IA 376 in Woodbury, Iowa has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is NB IA 376 inspected?
NB IA 376'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 3,750 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NB IA 376 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 NB IA 376?
NB IA 376 has an NBI inventory load rating of 37.6 metric tons.
Who is responsible for maintaining NB IA 376?
NB IA 376 is owned and maintained by State Highway Agency.
How old is NB IA 376 and does age affect safety?
NB IA 376 was built in 1931, making it 95 years old and last reconstructed in 1972.
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.
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.