STATE ROUTE 299
Carrying STATE ROUTE 299 over NORTH FORK TRINITY RIVER
02-TRI-299-36.89, Trinity, California
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: STATE ROUTE 299
The STATE ROUTE 299 bridge in Trinity, California carries STATE ROUTE 299 over NORTH FORK TRINITY RIVER. It was built in 1984, making it 42 years old today. The structure is built primarily of prestressed concrete continuous and spans 3 sections, stretching 68.6 meters (225 feet) end to end. Daily traffic averages 3,325 vehicles, placing it in the moderately-trafficked tier of California bridges. It is owned and maintained by State 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 STATE ROUTE 299 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 How the historical reference is calculated.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
- 1984
- Material
- Prestressed Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 68.6 m (225 ft)
- Deck Width
- 12.0 m (39 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 3,325 vehicles/day
- Structure Number
- 05 0011
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • The substructure (piers and abutments) is in good condition (7/9), showing no significant deterioration.
How to read this record
This page shows what the last federal inspection recorded, not whether STATE ROUTE 299 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 STATE ROUTE 299 against other structures in Trinity 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 STATE ROUTE 299?
STATE ROUTE 299 in Trinity, 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 STATE ROUTE 299 inspected?
STATE ROUTE 299'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 3,325 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. STATE ROUTE 299 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 STATE ROUTE 299?
STATE ROUTE 299 has an NBI inventory load rating of 32.4 metric tons.
Who is responsible for maintaining STATE ROUTE 299?
STATE ROUTE 299 is owned and maintained by State Highway Agency.
How old is STATE ROUTE 299 and does age affect safety?
STATE ROUTE 299 was built in 1984, making it 42 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.