NFA B490
Carrying NFA B490 over NFA B490
IN JOHNSON CITY, Washington, Tennessee
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: NFA B490
The NFA B490 bridge in Washington, Tennessee carries NFA B490 over NFA B490. It was built in 1977, making it 49 years old today. The structure is built primarily of concrete continuous. Daily traffic averages 43,857 vehicles, placing it in the heavily-trafficked tier of Tennessee bridges.
The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. All reported major components score above the Poor range.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How NFA B490 compares
Live comparison across Tennessee.
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 How the historical reference is calculated.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
- 1977
- Material
- Concrete Continuous
- Avg Daily Traffic
- 43,857 vehicles/day
- Structure Number
- 90I00260057
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 NFA B490 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 NFA B490 against other structures in Washington and across Tennessee. Tennessee 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 NFA B490?
NFA B490 in Washington, Tennessee on the FHWA's 0–9 scale.
How often is NFA B490 inspected?
NFA B490'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 43,857 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NFA B490 is currently shown as unrated condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for NFA B490?
An inventory load rating is not recorded for NFA B490.
Who is responsible for maintaining NFA B490?
Ownership is not specified for NFA B490 in the NBI.
How old is NFA B490 and does age affect safety?
NFA B490 was built in 1977, making it 49 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.