FHWA NBI 2024 Inspection record Public-domain dataset

N4060 (S177E)

Carrying N4060 (S177E) over SPUNKY CREEK

1300 SO 177TH E AVE, Tulsa, Oklahoma

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
33 t Inventory load rating

Bridge Snapshot: N4060 (S177E)

The N4060 (S177E) bridge in Tulsa, Oklahoma carries N4060 (S177E) over SPUNKY CREEK. It was built in 2023, making it 3 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 10.1 meters (33 feet) end to end. Daily traffic averages 4,041 vehicles, placing it in the moderately-trafficked tier of Oklahoma bridges. It is owned and maintained by City/Municipal Highway Agency.

The latest FHWA inspection records show culvert at 8/9. The weakest component sits in good condition. All reported major components score above the Poor range. Its NBI inventory load rating is 32.7 metric tons.

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

How N4060 (S177E) compares

▲ 0.3
Load rating vs Oklahoma average (32.4 t)
Top 50%
Higher load rating than 50% of Oklahoma bridges
1,124
Bridges in Tulsa · 63 in Poor condition
N4060 (S177E) 32.7 t
Oklahoma average 32.4 t

Live comparison across Oklahoma.

Historical Sufficiency Rating

PlainBridge-computed
82.5 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
13.0
Essentiality /15
14.5
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 How the historical reference is calculated.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
8/9
Good (7–9)
Inventory Load Rating
32.7 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
2023
Material
Concrete
Number of Spans
2
Structure Length
10.1 m (33 ft)
Deck Width
12.3 m (40 ft)
Owner
City/Municipal Highway Agency
Avg Daily Traffic
4,041 vehicles/day
Structure Number
332550000000000

How to read this record

This page shows what the last federal inspection recorded, not whether N4060 (S177E) 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 N4060 (S177E) against other structures in Tulsa 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 N4060 (S177E)?

N4060 (S177E) in Tulsa, Oklahoma on the FHWA's 0–9 scale.

How often is N4060 (S177E) inspected?

N4060 (S177E)'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 4,041 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. N4060 (S177E) 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 N4060 (S177E)?

N4060 (S177E) has an NBI inventory load rating of 32.7 metric tons.

Who is responsible for maintaining N4060 (S177E)?

N4060 (S177E) is owned and maintained by City/Municipal Highway Agency.

How old is N4060 (S177E) and does age affect safety?

N4060 (S177E) was built in 2023, making it 3 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.