HWY 1W (STEEL BR)
Carrying HWY 1W (STEEL BR) over WILLAMETTE RIVER
0.4 MI NE PORTLAND CC, Multnomah, Oregon
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: HWY 1W (STEEL BR)
The HWY 1W (STEEL BR) bridge in Multnomah, Oregon carries HWY 1W (STEEL BR) over WILLAMETTE RIVER. It was built in 1910, making it 116 years old today. The structure is built primarily of steel and spans 1 section, stretching 239.3 meters (785 feet) end to end. Daily traffic averages 10,362 vehicles, placing it in the heavily-trafficked tier of Oregon bridges. It is owned and maintained by Railroad.
The latest FHWA inspection records show a deck rating of 5/9, superstructure at 4/9, substructure at 5/9. The weakest component sits in poor 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. Its NBI inventory load rating is 19.8 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How HWY 1W (STEEL BR) 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 How the historical reference is calculated.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
- 1910
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 239.3 m (785 ft)
- Deck Width
- 19.5 m (64 ft)
- Owner
- Railroad
- Avg Daily Traffic
- 10,362 vehicles/day
- Structure Number
- 06683 01WX00036
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) is in fair condition (5/9), with minor deterioration that may require routine maintenance.
- • At 4/9, the superstructure (beams and supports above the deck) is in poor shape, with advanced wear flagged for priority repair.
- • At 5/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
How to read this record
HWY 1W (STEEL BR) 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 HWY 1W (STEEL BR) 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 HWY 1W (STEEL BR)?
HWY 1W (STEEL BR) in Multnomah, Oregon has a deck rating of 5/9, superstructure rating of 4/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is HWY 1W (STEEL BR) inspected?
HWY 1W (STEEL BR)'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 10,362 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. HWY 1W (STEEL BR) 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 HWY 1W (STEEL BR)?
HWY 1W (STEEL BR) has an NBI inventory load rating of 19.8 metric tons.
Who is responsible for maintaining HWY 1W (STEEL BR)?
HWY 1W (STEEL BR) is owned and maintained by Railroad.
How old is HWY 1W (STEEL BR) and does age affect safety?
HWY 1W (STEEL BR) was built in 1910, making it 116 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.