US 30 BY (HWY 123)
Carrying US 30 BY (HWY 123) over Private Driveway
6.0 MI NW PORTLAND CC, Multnomah, Oregon
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: US 30 BY (HWY 123)
The US 30 BY (HWY 123) bridge in Multnomah, Oregon carries US 30 BY (HWY 123) over Private Driveway. It was built in 1931, making it 95 years old today. The structure is built primarily of steel and spans 5 sections, stretching 64.0 meters (210 feet) end to end. Daily traffic averages 19,869 vehicles, placing it in the heavily-trafficked tier of Oregon bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 5/9, substructure at 6/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 13.9 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How US 30 BY (HWY 123) 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 How the historical reference is calculated.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
- 1931
- Material
- Steel
- Number of Spans
- 5
- Structure Length
- 64.0 m (210 ft)
- Deck Width
- 12.2 m (40 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 19,869 vehicles/day
- Structure Number
- 06498 123 00027
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • The superstructure (beams and supports above the deck) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
- • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
How to read this record
This page shows what the last federal inspection recorded, not whether US 30 BY (HWY 123) 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 US 30 BY (HWY 123) 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 US 30 BY (HWY 123)?
US 30 BY (HWY 123) in Multnomah, Oregon has a deck rating of 6/9, superstructure rating of 5/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is US 30 BY (HWY 123) inspected?
US 30 BY (HWY 123)'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 19,869 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. US 30 BY (HWY 123) 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 US 30 BY (HWY 123)?
US 30 BY (HWY 123) has an NBI inventory load rating of 13.9 metric tons.
Who is responsible for maintaining US 30 BY (HWY 123)?
US 30 BY (HWY 123) is owned and maintained by State Highway Agency.
How old is US 30 BY (HWY 123) and does age affect safety?
US 30 BY (HWY 123) was built in 1931, making it 95 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.