IRR SD025
Carrying IRR SD025 over CK
0.9 E MARSHALL CO LINE, Roberts, South Dakota
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: IRR SD025
The IRR SD025 bridge in Roberts, South Dakota carries IRR SD025 over CK. It was built in 1960, making it 66 years old today. The structure is built primarily of concrete continuous and spans 3 sections, stretching 9.4 meters (31 feet) end to end. Daily traffic averages 514 vehicles, placing it in the lower-traffic tier of South Dakota bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert at 5/9. 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 47.2 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How IRR SD025 compares
Live comparison across South 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 How the historical reference is calculated.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
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 9.4 m (31 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 514 vehicles/day
- Structure Number
- 000000055009050
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether IRR SD025 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 SD025 against other structures in Roberts and across South Dakota. South 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 SD025?
IRR SD025 in Roberts, South Dakota on the FHWA's 0–9 scale.
How often is IRR SD025 inspected?
IRR SD025'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 514 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. IRR SD025 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 SD025?
IRR SD025 has an NBI inventory load rating of 47.2 metric tons.
Who is responsible for maintaining IRR SD025?
IRR SD025 is owned and maintained by State Highway Agency.
How old is IRR SD025 and does age affect safety?
IRR SD025 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.