1W To Hwy 1 NB
Carrying 1W To Hwy 1 NB over SW Terwilliger Blvd.
1.7 M S OF ROSS ISL. BR., Multnomah, Oregon
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: 1W To Hwy 1 NB
The 1W To Hwy 1 NB bridge in Multnomah, Oregon carries 1W To Hwy 1 NB over SW Terwilliger Blvd.. It was built in 1993, making it 33 years old today. The structure is built primarily of prestressed concrete continuous. Daily traffic averages 113,008 vehicles, placing it in the heavily-trafficked tier of Oregon bridges.
The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. No reported major component scores in the Poor range under the current federal condition thresholds.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How 1W To Hwy 1 NB 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 How the historical reference is calculated.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
- 1993
- Material
- Prestressed Concrete Continuous
- Avg Daily Traffic
- 113,008 vehicles/day
- Structure Number
- 17064 001C29705
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 1W To Hwy 1 NB 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 1W To Hwy 1 NB against other structures in Multnomah 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 1W To Hwy 1 NB?
1W To Hwy 1 NB in Multnomah, Oregon on the FHWA's 0–9 scale.
How often is 1W To Hwy 1 NB inspected?
1W To Hwy 1 NB'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 113,008 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. 1W To Hwy 1 NB 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 1W To Hwy 1 NB?
An inventory load rating is not recorded for 1W To Hwy 1 NB.
Who is responsible for maintaining 1W To Hwy 1 NB?
Ownership is not specified for 1W To Hwy 1 NB in the NBI.
How old is 1W To Hwy 1 NB and does age affect safety?
1W To Hwy 1 NB was built in 1993, making it 33 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.