CORP RR
Carrying CORP RR over INTERSTATE 5
02-SIS-005-R66.97, Siskiyou, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: CORP RR
The CORP RR bridge in Siskiyou, California carries CORP RR over INTERSTATE 5. It was built in 1971, making it 55 years old today. The structure is built primarily of prestressed concrete continuous. Daily traffic averages 15,300 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. All reported major components score above the Poor range.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How CORP RR compares
Live comparison across California.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1971
- Material
- Prestressed Concrete Continuous
- Avg Daily Traffic
- 15,300 vehicles/day
- Structure Number
- 02 0019
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 CORP RR 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 CORP RR against other structures in Siskiyou 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 CORP RR?
CORP RR in Siskiyou, California on the FHWA's 0–9 scale.
How often is CORP RR inspected?
CORP RR'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 15,300 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. CORP RR 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 CORP RR?
An inventory load rating is not recorded for CORP RR.
Who is responsible for maintaining CORP RR?
Ownership is not specified for CORP RR in the NBI.
How old is CORP RR and does age affect safety?
CORP RR was built in 1971, making it 55 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.