N580-WEST ST OFF-R
Carrying N580-WEST ST OFF-R over MARTIN LUTHER KING JR WY
04-ALA-580-45.25-OAK, Alameda, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: N580-WEST ST OFF-R
The N580-WEST ST OFF-R bridge in Alameda, California carries N580-WEST ST OFF-R over MARTIN LUTHER KING JR WY. It was built in 1961, making it 65 years old today. The structure is built primarily of concrete. Daily traffic averages 36,028 vehicles, placing it in the heavily-trafficked tier of California bridges.
The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. None of this bridge's reported major components fall into the Poor condition range.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How N580-WEST ST OFF-R compares
Live comparison across California.
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 How the historical reference is calculated.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
- 1961
- Material
- Concrete
- Avg Daily Traffic
- 36,028 vehicles/day
- Structure Number
- 33 0299S
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 N580-WEST ST OFF-R 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 N580-WEST ST OFF-R against other structures in Alameda and across California. California 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 N580-WEST ST OFF-R?
N580-WEST ST OFF-R in Alameda, California on the FHWA's 0–9 scale.
How often is N580-WEST ST OFF-R inspected?
N580-WEST ST OFF-R'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 36,028 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. N580-WEST ST OFF-R 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 N580-WEST ST OFF-R?
An inventory load rating is not recorded for N580-WEST ST OFF-R.
Who is responsible for maintaining N580-WEST ST OFF-R?
Ownership is not specified for N580-WEST ST OFF-R in the NBI.
How old is N580-WEST ST OFF-R and does age affect safety?
N580-WEST ST OFF-R was built in 1961, making it 65 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.