NE 51ST STREET
Carrying NE 51ST STREET over SR 520
3.9 E JCT I-405, King, Washington
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: NE 51ST STREET
The NE 51ST STREET bridge in King, Washington carries NE 51ST STREET over SR 520. It was built in 1987, making it 39 years old today. The structure is built primarily of prestressed concrete continuous. Daily traffic averages 61,404 vehicles, placing it in the heavily-trafficked tier of Washington bridges.
The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. No reported major component scores in the Poor range under the current federal condition thresholds.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How NE 51ST STREET compares
Live comparison across Washington.
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 How the historical reference is calculated.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
- 1987
- Material
- Prestressed Concrete Continuous
- Avg Daily Traffic
- 61,404 vehicles/day
- Structure Number
- 0012854A0000000
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 NE 51ST STREET 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 NE 51ST STREET against other structures in King and across Washington. Washington 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 NE 51ST STREET?
NE 51ST STREET in King, Washington on the FHWA's 0–9 scale.
How often is NE 51ST STREET inspected?
NE 51ST STREET'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 61,404 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NE 51ST STREET 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 NE 51ST STREET?
An inventory load rating is not recorded for NE 51ST STREET.
Who is responsible for maintaining NE 51ST STREET?
Ownership is not specified for NE 51ST STREET in the NBI.
How old is NE 51ST STREET and does age affect safety?
NE 51ST STREET was built in 1987, making it 39 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.