FHWA NBI 2024 Inspection record Public-domain dataset

IRR E1850

Carrying IRR E1850 over WEST CACHE CREEK TRIB.

2S 1.9W OF JCT SH5-US281, Cotton, Oklahoma

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
93 t Inventory load rating

Bridge Snapshot: IRR E1850

The IRR E1850 bridge in Cotton, Oklahoma carries IRR E1850 over WEST CACHE CREEK TRIB.. It was built in 2016, making it 10 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 11.6 meters (38 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 culvert at 8/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 92.7 metric tons.

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

How IRR E1850 compares

▲ 60.3
Load rating vs Oklahoma average (32.4 t)
Top 1%
Higher load rating than 99% of Oklahoma bridges
213
Bridges in Cotton · 7 in Poor condition
IRR E1850 92.7 t
Oklahoma average 32.4 t

Live comparison across Oklahoma.

Historical Sufficiency Rating

PlainBridge-computed
99.9 / 100 - historical 80–100 band
Structural adequacy /55
55.0
Serviceability /30
30.0
Essentiality /15
14.9
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 How the historical reference is calculated.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
92.7 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
2016
Material
Concrete
Number of Spans
3
Structure Length
11.6 m (38 ft)
Deck Width
11.3 m (37 ft)
Owner
County Highway Agency
Avg Daily Traffic
100 vehicles/day
Structure Number
306880000000000

How to read this record

This page shows what the last federal inspection recorded, not whether IRR E1850 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 E1850 against other structures in Cotton 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 E1850?

IRR E1850 in Cotton, Oklahoma on the FHWA's 0–9 scale.

How often is IRR E1850 inspected?

IRR E1850'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 E1850 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 IRR E1850?

IRR E1850 has an NBI inventory load rating of 92.7 metric tons.

Who is responsible for maintaining IRR E1850?

IRR E1850 is owned and maintained by County Highway Agency.

How old is IRR E1850 and does age affect safety?

IRR E1850 was built in 2016, making it 10 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.