NEW MIAMI RIVER RD
Carrying NEW MIAMI RIVER RD over MIAMI RV
4.0 MI SOUTH OF MOHLER, Tillamook, Oregon
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
NEW MIAMI RIVER RD in Tillamook, Oregon sits above 74% of rated Oregon bridges on inventory load rating (40 t), while its 1978 build year is earlier than 50% of Tillamook's recorded-year cohort (225 bridges).
NEW MIAMI RIVER RD in Tillamook, Oregon is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1978, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 2. The lowest applicable rating sets the federal condition category, so this Poor result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure OR:57C59 563 00005
INTERSTATE-ERA · PRESTRESS · MULTI-SPAN · SUB-LED · LOCAL-ADT · STANDARD-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- PRESTRESS Prestressed concrete
- MULTI-SPAN 2 spans
- SUB-LED Substructure-led
- LOCAL-ADT Local ADT
- STANDARD-LOAD Standard load
- CAT-POOR Poor
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: NEW MIAMI RIVER RD
The NEW MIAMI RIVER RD bridge in Tillamook, Oregon carries NEW MIAMI RIVER RD over MIAMI RV. It was built in 1978, making it 48 years old today. The structure is built primarily of prestressed concrete and spans 2 sections, stretching 27.7 meters (91 feet) end to end. Daily traffic averages 106 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 6/9, superstructure at 6/9, substructure at 2/9. The weakest component sits in critical condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order.
How NEW MIAMI RIVER RD compares
Age against the county: built in 1978, earlier than 112 of Tillamook's 225 bridges with a recorded construction year (50%), against a county median build year of 1978.
Live comparison across Oregon bridges with a recorded inventory load rating (8,282 of 8,305 rated).
NEW MIAMI RIVER RD vs every rated Oregon bridge
Inventory load rating (metric tons), FHWA NBI, this state
40 Top 26% higher than 74% of 8,282 bridges
rated Oregon bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Tillamook inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 225 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 1978
- Material
- Prestressed Concrete
- Number of Spans
- 2
- Structure Length
- 27.7 m (91 ft)
- Deck Width
- 9.8 m (32 ft)
- Owner
- County Highway Agency
- Avg Daily Traffic
- 106 vehicles/day
- Structure Number
- 57C59 563 00005
Condition Analysis
- • The deck (driving surface) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • The superstructure (beams and supports above the deck) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) rates critical at 2/9, with severe deterioration on the latest inspection.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
NEW MIAMI RIVER RD 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 NEW MIAMI RIVER RD 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 NEW MIAMI RIVER RD?
NEW MIAMI RIVER RD in Tillamook, Oregon has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 2/9 on the FHWA's 0–9 scale.
How often is NEW MIAMI RIVER RD inspected?
NEW MIAMI RIVER 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 106 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. NEW MIAMI RIVER RD 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 NEW MIAMI RIVER RD?
NEW MIAMI RIVER RD has an NBI inventory load rating of 39.5 metric tons.
Who is responsible for maintaining NEW MIAMI RIVER RD?
NEW MIAMI RIVER RD is owned and maintained by County Highway Agency.
How old is NEW MIAMI RIVER RD and does age affect safety?
NEW MIAMI RIVER RD was built in 1978, making it 48 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.
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Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.