OLD HIGHWAY 85
Carrying OLD HIGHWAY 85 over HAY CK
6N 14.7W OF HOOVER, Butte, South Dakota
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: OLD HIGHWAY 85
The OLD HIGHWAY 85 bridge in Butte, South Dakota carries OLD HIGHWAY 85 over HAY CK. It was built in 1932, making it 94 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 6.7 meters (22 feet) end to end. Daily traffic averages 21 vehicles, placing it in the lower-traffic tier of South Dakota bridges. It is owned and maintained by County 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 24.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How OLD HIGHWAY 85 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 How the historical reference is calculated.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
- 1932
- Material
- Concrete
- Number of Spans
- 2
- Structure Length
- 6.7 m (22 ft)
- Deck Width
- 7.6 m (25 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 21 vehicles/day
- Structure Number
- 000000010239010
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 OLD HIGHWAY 85 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 OLD HIGHWAY 85 against other structures in Butte 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 OLD HIGHWAY 85?
OLD HIGHWAY 85 in Butte, South Dakota on the FHWA's 0–9 scale.
How often is OLD HIGHWAY 85 inspected?
OLD HIGHWAY 85'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 21 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. OLD HIGHWAY 85 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 OLD HIGHWAY 85?
OLD HIGHWAY 85 has an NBI inventory load rating of 24.5 metric tons.
Who is responsible for maintaining OLD HIGHWAY 85?
OLD HIGHWAY 85 is owned and maintained by County Highway Agency.
How old is OLD HIGHWAY 85 and does age affect safety?
OLD HIGHWAY 85 was built in 1932, making it 94 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.