I 90B
Carrying I 90B over PLACER CREEK
IN WALLACE, Shoshone, Idaho
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: I 90B
The I 90B bridge in Shoshone, Idaho carries I 90B over PLACER CREEK. It was built in 1942, making it 84 years old today. The structure is built primarily of concrete and spans 1 section, stretching 6.4 meters (21 feet) end to end. Daily traffic averages 2,700 vehicles, placing it in the moderately-trafficked tier of Idaho 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 29.0 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How I 90B compares
Live comparison across Idaho.
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 How the historical reference is calculated.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
- 1942
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 6.4 m (21 ft)
- Deck Width
- 29.6 m (97 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 2,700 vehicles/day
- Structure Number
- 000000000017245
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 I 90B 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 I 90B against other structures in Shoshone and across Idaho. Idaho 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 I 90B?
I 90B in Shoshone, Idaho on the FHWA's 0–9 scale.
How often is I 90B inspected?
I 90B'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 2,700 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. I 90B 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 I 90B?
I 90B has an NBI inventory load rating of 29.0 metric tons.
Who is responsible for maintaining I 90B?
I 90B is owned and maintained by State Highway Agency.
How old is I 90B and does age affect safety?
I 90B was built in 1942, making it 84 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.