IRR BIA RTE 22
Carrying IRR BIA RTE 22 over TRIB TO RED BUTTE BAY
SE LAKE SAKAKAWEA, Mercer, North Dakota
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: IRR BIA RTE 22
The IRR BIA RTE 22 bridge in Mercer, North Dakota carries IRR BIA RTE 22 over TRIB TO RED BUTTE BAY. It was built in 1960, making it 66 years old today. The structure is built primarily of steel and spans 3 sections, stretching 16.2 meters (53 feet) end to end. Daily traffic averages 200 vehicles, placing it in the lower-traffic tier of North Dakota bridges. It is owned and maintained by Bureau of Indian Affairs.
The latest FHWA inspection records show culvert at 2/9. The weakest component sits in critical condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order. Its NBI inventory load rating is 4.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How IRR BIA RTE 22 compares
Live comparison across North Dakota.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1960
- Material
- Steel
- Number of Spans
- 3
- Structure Length
- 16.2 m (53 ft)
- Deck Width
- 39.7 m (130 ft)
- Owner
- Bureau of Indian Affairs
- Avg Daily Traffic
- 200 vehicles/day
- Structure Number
- 0000A04301B0500
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
IRR BIA RTE 22 is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare IRR BIA RTE 22 against other structures in Mercer 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 IRR BIA RTE 22?
IRR BIA RTE 22 in Mercer, North Dakota on the FHWA's 0–9 scale.
How often is IRR BIA RTE 22 inspected?
IRR BIA RTE 22'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 200 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. IRR BIA RTE 22 is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for IRR BIA RTE 22?
IRR BIA RTE 22 has an NBI inventory load rating of 4.5 metric tons.
Who is responsible for maintaining IRR BIA RTE 22?
IRR BIA RTE 22 is owned and maintained by Bureau of Indian Affairs.
How old is IRR BIA RTE 22 and does age affect safety?
IRR BIA RTE 22 was built in 1960, making it 66 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.
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.