FHWA NBI 2024 Inspection record Public-domain dataset

IRR CORDERO MINE R

Carrying IRR CORDERO MINE R over OREGON CYN CRK

WEST OF MCDERMITT, Humboldt, Nevada

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Fair
27 t Inventory load rating

Bridge Snapshot: IRR CORDERO MINE R

The IRR CORDERO MINE R bridge in Humboldt, Nevada carries IRR CORDERO MINE R over OREGON CYN CRK. It was built in 1957, making it 69 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 6.4 meters (21 feet) end to end. Daily traffic averages 20 vehicles, placing it in the lower-traffic tier of Nevada bridges. It is owned and maintained by State Highway Agency.

The latest FHWA inspection records show culvert at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 27.0 metric tons.

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

How IRR CORDERO MINE R compares

▼ 19.6
Load rating vs Nevada average (46.6 t)
Bottom 17%
Lower load rating than 83% of Nevada bridges
55
Bridges in Humboldt · 1 in Poor condition
IRR CORDERO MINE R 27.0 t
Nevada average 46.6 t

Live comparison across Nevada.

Historical Sufficiency Rating

PlainBridge-computed
90.9 / 100 - historical 80–100 band
Structural adequacy /55
50.9
Serviceability /30
30.0
Essentiality /15
14.9
Special reductions
−4.9

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 How the historical reference is calculated.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

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

Structural Details

Year Built
1957
Material
Concrete
Number of Spans
2
Structure Length
6.4 m (21 ft)
Owner
State Highway Agency
Avg Daily Traffic
20 vehicles/day
Structure Number
B 695

How to read this record

This page shows what the last federal inspection recorded, not whether IRR CORDERO MINE R 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 CORDERO MINE R against other structures in Humboldt and across Nevada. Nevada 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 CORDERO MINE R?

IRR CORDERO MINE R in Humboldt, Nevada on the FHWA's 0–9 scale.

How often is IRR CORDERO MINE R inspected?

IRR CORDERO MINE R'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 20 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. IRR CORDERO MINE R 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 CORDERO MINE R?

IRR CORDERO MINE R has an NBI inventory load rating of 27.0 metric tons.

Who is responsible for maintaining IRR CORDERO MINE R?

IRR CORDERO MINE R is owned and maintained by State Highway Agency.

How old is IRR CORDERO MINE R and does age affect safety?

IRR CORDERO MINE R was built in 1957, making it 69 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.