IMPERIAL HIGHWAY
Carrying IMPERIAL HIGHWAY over BUENA VISTA AVE
RTE 90 AT BUENA VISTA AVE, Orange, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: IMPERIAL HIGHWAY
The IMPERIAL HIGHWAY bridge in Orange, California carries IMPERIAL HIGHWAY over BUENA VISTA AVE. It was built in 1962, making it 64 years old today. It was last reconstructed in 2005, extending its service life. The structure is built primarily of concrete continuous and spans 3 sections, stretching 48.5 meters (159 feet) end to end. Daily traffic averages 30,000 vehicles, placing it in the heavily-trafficked tier of California bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure 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 32.4 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How IMPERIAL HIGHWAY 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 How the historical reference is calculated.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
- 1962
- Last Reconstructed
- 2005
- Material
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 48.5 m (159 ft)
- Deck Width
- 21.0 m (69 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 30,000 vehicles/day
- Structure Number
- 55C0714
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
- • At 7/9, the superstructure (beams and supports above the deck) is in good shape and shows no significant wear.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
How to read this record
This page shows what the last federal inspection recorded, not whether IMPERIAL HIGHWAY 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 IMPERIAL HIGHWAY 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 IMPERIAL HIGHWAY?
IMPERIAL HIGHWAY in Orange, California has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is IMPERIAL HIGHWAY inspected?
IMPERIAL HIGHWAY'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 30,000 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. IMPERIAL HIGHWAY 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 IMPERIAL HIGHWAY?
IMPERIAL HIGHWAY has an NBI inventory load rating of 32.4 metric tons.
Who is responsible for maintaining IMPERIAL HIGHWAY?
IMPERIAL HIGHWAY is owned and maintained by City/Municipal Highway Agency.
How old is IMPERIAL HIGHWAY and does age affect safety?
IMPERIAL HIGHWAY was built in 1962, making it 64 years old and last reconstructed in 2005.
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.