N&S605-N405 CONN
Carrying N&S605-N405 CONN over LOS ALAMITOS CHANNEL
12-ORA-605-R0.19-LALM, Orange, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: N&S605-N405 CONN
The N&S605-N405 CONN bridge in Orange, California carries N&S605-N405 CONN over LOS ALAMITOS CHANNEL. It was built in 1966, making it 60 years old today. The structure is built primarily of concrete and spans 3 sections, stretching 12.8 meters (42 feet) end to end. Daily traffic averages 17,900 vehicles, placing it in the heavily-trafficked tier of California bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 32.4 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How N&S605-N405 CONN 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 How the historical reference is calculated.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
- 1966
- Material
- Concrete
- Number of Spans
- 3
- Structure Length
- 12.8 m (42 ft)
- Deck Width
- 14.7 m (48 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 17,900 vehicles/day
- Structure Number
- 55 0471H
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 N&S605-N405 CONN 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 N&S605-N405 CONN against other structures in Orange 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 N&S605-N405 CONN?
N&S605-N405 CONN in Orange, California on the FHWA's 0–9 scale.
How often is N&S605-N405 CONN inspected?
N&S605-N405 CONN'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 17,900 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. N&S605-N405 CONN 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 N&S605-N405 CONN?
N&S605-N405 CONN has an NBI inventory load rating of 32.4 metric tons.
Who is responsible for maintaining N&S605-N405 CONN?
N&S605-N405 CONN is owned and maintained by State Highway Agency.
How old is N&S605-N405 CONN and does age affect safety?
N&S605-N405 CONN was built in 1966, making it 60 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.