FHWA NBI 2024 Inspection record Public-domain dataset

N4050

Carrying N4050 over MUDDY BOGGY CREEK

5N 3E of BOSWELL, Choctaw, Oklahoma

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
19 t Inventory load rating

Bridge Snapshot: N4050

The N4050 bridge in Choctaw, Oklahoma carries N4050 over MUDDY BOGGY CREEK. It was built in 2019, making it 7 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 9.8 meters (32 feet) end to end. Daily traffic averages 70 vehicles, placing it in the lower-traffic tier of Oklahoma bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show culvert at 8/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 19.1 metric tons.

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

How N4050 compares

▼ 13.3
Load rating vs Oklahoma average (32.4 t)
Bottom 9%
Lower load rating than 91% of Oklahoma bridges
216
Bridges in Choctaw · 16 in Poor condition
N4050 19.1 t
Oklahoma average 32.4 t

Live comparison across Oklahoma.

Historical Sufficiency Rating

PlainBridge-computed
82.7 / 100 - historical 80–100 band
Structural adequacy /55
39.2
Serviceability /30
29.0
Essentiality /15
14.7
Special reductions
−0.2

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 How the historical reference is calculated.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
8/9
Good (7–9)
Inventory Load Rating
19.1 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
2019
Material
Concrete
Number of Spans
3
Structure Length
9.8 m (32 ft)
Deck Width
9.8 m (32 ft)
Owner
County Highway Agency
Avg Daily Traffic
70 vehicles/day
Structure Number
319850000000000

How to read this record

This page shows what the last federal inspection recorded, not whether N4050 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 N4050 against other structures in Choctaw and across Oklahoma. Oklahoma 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 N4050?

N4050 in Choctaw, Oklahoma on the FHWA's 0–9 scale.

How often is N4050 inspected?

N4050'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 70 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. N4050 is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for N4050?

N4050 has an NBI inventory load rating of 19.1 metric tons.

Who is responsible for maintaining N4050?

N4050 is owned and maintained by County Highway Agency.

How old is N4050 and does age affect safety?

N4050 was built in 2019, making it 7 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.