North Bridge Rd.
Carrying North Bridge Rd. over SILVIES RIVER (SENECA)
MP 0.37, Grant, Oregon
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
North Bridge Rd. in Grant, Oregon sits above 95% of rated Oregon bridges on inventory load rating (60 t), while its 1979 build year is earlier than 44% of Grant's recorded-year cohort (144 bridges).
North Bridge Rd. in Grant, Oregon is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1979, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 6. The lowest applicable rating sets the federal condition category, so this Fair 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:23899 000 00037
INTERSTATE-ERA · TIMBER · LONG-SPAN-RUN · SUB-LED · TRACE-ADT · HEAVY-LOAD · CAT-FAIR
- INTERSTATE-ERA 1950–1979
- TIMBER Wood or timber
- LONG-SPAN-RUN 4 spans
- SUB-LED Substructure-led
- TRACE-ADT Trace ADT
- HEAVY-LOAD Heavy load
- CAT-FAIR Fair
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: North Bridge Rd.
The North Bridge Rd. bridge in Grant, Oregon carries North Bridge Rd. over SILVIES RIVER (SENECA). It was built in 1979, making it 47 years old today. The structure is built primarily of wood or timber and spans 4 sections, stretching 17.2 meters (56 feet) end to end. Daily traffic averages 12 vehicles, placing it in the lower-traffic tier of Oregon 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 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range.
How North Bridge Rd. compares
Age against the county: built in 1979, earlier than 63 of Grant's 144 bridges with a recorded construction year (44%), against a county median build year of 1977. This is one of the newer structures in its county.
Live comparison across Oregon bridges with a recorded inventory load rating (8,282 of 8,305 rated).
North Bridge Rd. vs every rated Oregon bridge
Inventory load rating (metric tons), FHWA NBI, this state
60 Top 5% higher than 95% 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.
Grant inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 144 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
- 1979
- Material
- Wood or Timber
- Number of Spans
- 4
- Structure Length
- 17.2 m (56 ft)
- Deck Width
- 4.3 m (14 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 12 vehicles/day
- Structure Number
- 23899 000 00037
Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
- • The substructure (piers and abutments) rates fair at 6/9, minor deterioration that routine maintenance should address.
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 North Bridge Rd. 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 North Bridge Rd. against other structures in Grant 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 North Bridge Rd.?
North Bridge Rd. in Grant, Oregon has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is North Bridge Rd. inspected?
North Bridge 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 12 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. North Bridge Rd. is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for North Bridge Rd.?
North Bridge Rd. has an NBI inventory load rating of 59.6 metric tons.
Who is responsible for maintaining North Bridge Rd.?
North Bridge Rd. is owned and maintained by City/Municipal Highway Agency.
How old is North Bridge Rd. and does age affect safety?
North Bridge Rd. was built in 1979, making it 47 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.
Share this inspection record
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.