FHWA NBI 2024 Inspection record Public-domain dataset

IRR N3550 SCHLEGEL

Carrying IRR N3550 SCHLEGEL over SAND CREEK

SCHLEGEL-ESECO .6S, Payne, Oklahoma

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
24 t Inventory load rating

Bridge Snapshot: IRR N3550 SCHLEGEL

The IRR N3550 SCHLEGEL bridge in Payne, Oklahoma carries IRR N3550 SCHLEGEL over SAND CREEK. It was built in 2013, making it 13 years old today. The structure is built primarily of steel and spans 1 section, stretching 15.2 meters (50 feet) end to end. Daily traffic averages 100 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 a deck rating of 6/9, superstructure at 6/9, substructure at 6/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 23.6 metric tons.

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

How IRR N3550 SCHLEGEL compares

▼ 8.8
Load rating vs Oklahoma average (32.4 t)
Bottom 31%
Lower load rating than 69% of Oklahoma bridges
384
Bridges in Payne · 40 in Poor condition
IRR N3550 SCHLEGEL 23.6 t
Oklahoma average 32.4 t

Live comparison across Oklahoma.

Historical Sufficiency Rating

PlainBridge-computed
86.2 / 100 - historical 80–100 band
Structural adequacy /55
46.5
Serviceability /30
27.8
Essentiality /15
15.0
Special reductions
−3.0

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 How the historical reference is calculated.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
6/9
Fair (5–6)
Superstructure
6/9
Fair (5–6)
Substructure
6/9
Fair (5–6)
Inventory Load Rating
23.6 t
NBI inventory level (metric tons)
Overall Condition
Fair

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

Structural Details

Year Built
2013
Material
Steel
Number of Spans
1
Structure Length
15.2 m (50 ft)
Deck Width
8.0 m (26 ft)
Owner
County Highway Agency
Avg Daily Traffic
100 vehicles/day
Structure Number
306370000000000

Condition Analysis

  • The deck (driving surface) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
  • 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 fair condition (6/9), with minor deterioration that may require routine maintenance.

How to read this record

This page shows what the last federal inspection recorded, not whether IRR N3550 SCHLEGEL 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 IRR N3550 SCHLEGEL against other structures in Payne 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 IRR N3550 SCHLEGEL?

IRR N3550 SCHLEGEL in Payne, Oklahoma has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.

How often is IRR N3550 SCHLEGEL inspected?

IRR N3550 SCHLEGEL'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 100 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. IRR N3550 SCHLEGEL 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 IRR N3550 SCHLEGEL?

IRR N3550 SCHLEGEL has an NBI inventory load rating of 23.6 metric tons.

Who is responsible for maintaining IRR N3550 SCHLEGEL?

IRR N3550 SCHLEGEL is owned and maintained by County Highway Agency.

How old is IRR N3550 SCHLEGEL and does age affect safety?

IRR N3550 SCHLEGEL was built in 2013, making it 13 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.