JOHN DALY BLVD
Carrying JOHN DALY BLVD over INTERSTATE 280, SR 1
04-SM-280-M27.17L-DLC, San Mateo, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: JOHN DALY BLVD
The JOHN DALY BLVD bridge in San Mateo, California carries JOHN DALY BLVD over INTERSTATE 280, SR 1. It was built in 1965, making it 61 years old today. The structure is built primarily of concrete continuous. Daily traffic averages 141,000 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 JOHN DALY BLVD 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 How the historical reference is calculated.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
- 1965
- Material
- Concrete Continuous
- Avg Daily Traffic
- 141,000 vehicles/day
- Structure Number
- 35 0172
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 JOHN DALY 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 JOHN DALY BLVD against other structures in San Mateo 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 JOHN DALY BLVD?
JOHN DALY BLVD in San Mateo, California on the FHWA's 0–9 scale.
How often is JOHN DALY BLVD inspected?
JOHN DALY 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 141,000 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. JOHN DALY BLVD 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 JOHN DALY BLVD?
An inventory load rating is not recorded for JOHN DALY BLVD.
Who is responsible for maintaining JOHN DALY BLVD?
Ownership is not specified for JOHN DALY BLVD in the NBI.
How old is JOHN DALY BLVD and does age affect safety?
JOHN DALY BLVD was built in 1965, making it 61 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.