CASTRO VALLEY BLVD
Carrying CASTRO VALLEY BLVD over LAKE CHABOT CREEK
JUST W/O LAKE, Alameda, California
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
CASTRO VALLEY BLVD in Alameda, California sits above 4% of rated California bridges on inventory load rating (16 t), while its 1900 build year is earlier than 100% of Alameda's recorded-year cohort (658 bridges).
CASTRO VALLEY BLVD in Alameda, California is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1900, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure CA:33C0054
PRE-1950 · CONCRETE · SINGLE-SPAN · CULVERT-LED · HEAVY-ADT · LIGHT-LOAD · CAT-GOOD
- PRE-1950 Pre-1950
- CONCRETE Concrete
- SINGLE-SPAN Single span
- CULVERT-LED Culvert-led
- HEAVY-ADT Heavy ADT
- LIGHT-LOAD Light load
- CAT-GOOD Good
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: CASTRO VALLEY BLVD
The CASTRO VALLEY BLVD bridge in Alameda, California carries CASTRO VALLEY BLVD over LAKE CHABOT CREEK. It was built in 1900, making it 126 years old today. It was last reconstructed in 1917, extending its service life. The structure is built primarily of concrete and spans 1 section, stretching 7.3 meters (24 feet) end to end. Daily traffic averages 33,600 vehicles, placing it in the heavily-trafficked tier of California bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How CASTRO VALLEY BLVD compares
Age against the county: built in 1900, earlier than 656 of Alameda's 658 bridges with a recorded construction year (100%), against a county median build year of 1970. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across California bridges with a recorded inventory load rating (25,538 of 25,848 rated).
CASTRO VALLEY BLVD vs every rated California bridge
Inventory load rating (metric tons), FHWA NBI, this state
16 Top 96% higher than 4% of 25,538 bridges
rated California bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Alameda inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 658 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1900
- Last Reconstructed
- 1917
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 7.3 m (24 ft) 0
- Owner
- County Highway Agency
- Avg Daily Traffic
- 33,600 vehicles/day
- Structure Number
- 33C0054
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 CASTRO VALLEY BLVD 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 CASTRO VALLEY BLVD 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 CASTRO VALLEY BLVD?
CASTRO VALLEY BLVD in Alameda, California on the FHWA's 0–9 scale.
How often is CASTRO VALLEY BLVD inspected?
CASTRO VALLEY BLVD'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 33,600 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. CASTRO VALLEY BLVD is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for CASTRO VALLEY BLVD?
CASTRO VALLEY BLVD has an NBI inventory load rating of 16.2 metric tons.
Who is responsible for maintaining CASTRO VALLEY BLVD?
CASTRO VALLEY BLVD is owned and maintained by County Highway Agency.
How old is CASTRO VALLEY BLVD and does age affect safety?
CASTRO VALLEY BLVD was built in 1900, making it 126 years old and last reconstructed in 1917.
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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.