FHWA NBI 2024 Inspection record Public-domain dataset

IRRFB COUNTY ROAD

Carrying IRRFB COUNTY ROAD over DEEP WATER CREEK

NORTH SIDE OF RAUB, McLean, North Dakota

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
19 t Inventory load rating

Bridge Snapshot: IRRFB COUNTY ROAD

The IRRFB COUNTY ROAD bridge in McLean, North Dakota carries IRRFB COUNTY ROAD over DEEP WATER CREEK. It was built in 1979, making it 47 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 18.3 meters (60 feet) end to end. Daily traffic averages 35 vehicles, placing it in the lower-traffic tier of North Dakota bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. All reported major components score above the Poor range. Its NBI inventory load rating is 18.6 metric tons.

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

How IRRFB COUNTY ROAD compares

▼ 13.8
Load rating vs North Dakota average (32.4 t)
Bottom 19%
Lower load rating than 81% of North Dakota bridges
57
Bridges in McLean · 3 in Poor condition
IRRFB COUNTY ROAD 18.6 t
North Dakota average 32.4 t

Live comparison across North Dakota.

Historical Sufficiency Rating

PlainBridge-computed
79.3 / 100 - historical 50–79.9 band
Structural adequacy /55
38.3
Serviceability /30
29.0
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 How the historical reference is calculated.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
7/9
Good (7–9)
Superstructure
7/9
Good (7–9)
Substructure
7/9
Good (7–9)
Inventory Load Rating
18.6 t
NBI inventory level (metric tons)
Overall Condition
Good

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

Structural Details

Year Built
1979
Material
Prestressed Concrete
Number of Spans
1
Structure Length
18.3 m (60 ft)
Deck Width
9.1 m (30 ft)
Owner
County Highway Agency
Avg Daily Traffic
35 vehicles/day
Structure Number
000000028112070

Condition Analysis

  • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
  • At 7/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
  • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.

How to read this record

This page shows what the last federal inspection recorded, not whether IRRFB COUNTY ROAD 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 IRRFB COUNTY ROAD against other structures in McLean and across North Dakota. North Dakota 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 IRRFB COUNTY ROAD?

IRRFB COUNTY ROAD in McLean, North Dakota has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.

How often is IRRFB COUNTY ROAD inspected?

IRRFB COUNTY ROAD'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 35 vehicles per day.

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

FHWA retired that reported status beginning with the 2018 archive. IRRFB COUNTY ROAD 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 IRRFB COUNTY ROAD?

IRRFB COUNTY ROAD has an NBI inventory load rating of 18.6 metric tons.

Who is responsible for maintaining IRRFB COUNTY ROAD?

IRRFB COUNTY ROAD is owned and maintained by County Highway Agency.

How old is IRRFB COUNTY ROAD and does age affect safety?

IRRFB COUNTY ROAD was built in 1979, making it 47 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.