BIG TROUT ROAD
Carrying BIG TROUT ROAD over THREE RIVERS
030MI SE OF HEBO, Tillamook, Oregon
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: BIG TROUT ROAD
The BIG TROUT ROAD bridge in Tillamook, Oregon carries BIG TROUT ROAD over THREE RIVERS. It was built in 1994, making it 32 years old today. The structure is built primarily of steel continuous and spans 1 section, stretching 27.1 meters (89 feet) end to end. Daily traffic averages 15 vehicles, placing it in the lower-traffic tier of Oregon bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 4/9, substructure at 2/9. The weakest component sits in critical condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed. Its NBI inventory load rating is 2.9 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How BIG TROUT ROAD compares
Live comparison across Oregon.
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 How the historical reference is calculated.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
- 1994
- Material
- Steel Continuous
- Number of Spans
- 1
- Structure Length
- 27.1 m (89 ft)
- Deck Width
- 2.7 m (9 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 15 vehicles/day
- Structure Number
- 57C82A309400028
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates fair at 5/9, minor deterioration that routine maintenance should address.
- • The superstructure (beams and supports above the deck) rates poor at 4/9, advanced deterioration that should be prioritized for repair.
- • The substructure (piers and abutments) is in critical condition (2/9), with severe deterioration requiring urgent attention.
How to read this record
BIG TROUT ROAD is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare BIG TROUT ROAD against other structures in Tillamook and across Oregon. Oregon 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 BIG TROUT ROAD?
BIG TROUT ROAD in Tillamook, Oregon has a deck rating of 5/9, superstructure rating of 4/9, and substructure rating of 2/9 on the FHWA's 0–9 scale.
How often is BIG TROUT ROAD inspected?
BIG TROUT ROAD'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 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. BIG TROUT ROAD is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for BIG TROUT ROAD?
BIG TROUT ROAD has an NBI inventory load rating of 2.9 metric tons.
Who is responsible for maintaining BIG TROUT ROAD?
BIG TROUT ROAD is owned and maintained by County Highway Agency.
How old is BIG TROUT ROAD and does age affect safety?
BIG TROUT ROAD was built in 1994, making it 32 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.