STEVENS CANYON ROA
Carrying STEVENS CANYON ROA over MUDDY FORK
10.3 miles west of jct. U, Lewis, Washington
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: STEVENS CANYON ROA
The STEVENS CANYON ROA bridge in Lewis, Washington carries STEVENS CANYON ROA over MUDDY FORK. It was built in 1952, making it 74 years old today. The structure is built primarily of concrete and spans 1 section, stretching 24.1 meters (79 feet) end to end. Daily traffic averages 1,375 vehicles, placing it in the moderately-trafficked tier of Washington bridges. It is owned and maintained by National Park Service.
The latest FHWA inspection records show superstructure at 7/9, substructure at 6/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds. Its NBI inventory load rating is 18.1 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How STEVENS CANYON ROA compares
Live comparison across Washington.
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 How the historical reference is calculated.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
- 1952
- Material
- Concrete
- Number of Spans
- 1
- Structure Length
- 24.1 m (79 ft)
- Deck Width
- 12.2 m (40 ft)
- Owner
- National Park Service
- Avg Daily Traffic
- 1,375 vehicles/day
- Structure Number
- 9450011P0000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • 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 STEVENS CANYON ROA 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 STEVENS CANYON ROA against other structures in Lewis and across Washington. Washington 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 STEVENS CANYON ROA?
STEVENS CANYON ROA in Lewis, Washington, superstructure rating of 7/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is STEVENS CANYON ROA inspected?
STEVENS CANYON ROA'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 1,375 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. STEVENS CANYON ROA 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 STEVENS CANYON ROA?
STEVENS CANYON ROA has an NBI inventory load rating of 18.1 metric tons.
Who is responsible for maintaining STEVENS CANYON ROA?
STEVENS CANYON ROA is owned and maintained by National Park Service.
How old is STEVENS CANYON ROA and does age affect safety?
STEVENS CANYON ROA was built in 1952, making it 74 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.