UPPER BIG T CYN RD
Carrying UPPER BIG T CYN RD over ALDER CRK BR
4.1MI E/O ANGELES FOR HWY, Los Angeles, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: UPPER BIG T CYN RD
The UPPER BIG T CYN RD bridge in Los Angeles, California carries UPPER BIG T CYN RD over ALDER CRK BR. It was built in 1983, making it 43 years old today. The structure is built primarily of steel and spans 1 section, stretching 11.9 meters (39 feet) end to end. Daily traffic averages 140 vehicles, placing it in the lower-traffic 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. Its NBI inventory load rating is 28.5 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How UPPER BIG T CYN RD 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 How the historical reference is calculated.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
- 1983
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 11.9 m (39 ft)
- Deck Width
- 8.5 m (28 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 140 vehicles/day
- Structure Number
- 53C1792
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 UPPER BIG T CYN RD 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 UPPER BIG T CYN RD against other structures in Los Angeles 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 UPPER BIG T CYN RD?
UPPER BIG T CYN RD in Los Angeles, California on the FHWA's 0–9 scale.
How often is UPPER BIG T CYN RD inspected?
UPPER BIG T CYN RD'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 140 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. UPPER BIG T CYN RD 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 UPPER BIG T CYN RD?
UPPER BIG T CYN RD has an NBI inventory load rating of 28.5 metric tons.
Who is responsible for maintaining UPPER BIG T CYN RD?
UPPER BIG T CYN RD is owned and maintained by County Highway Agency.
How old is UPPER BIG T CYN RD and does age affect safety?
UPPER BIG T CYN RD was built in 1983, making it 43 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.