SR 507
Carrying SR 507 over SKOOKUMCHUCK RIVER
2.4 N JCT I-5, Lewis, Washington
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
SR 507 in Lewis, Washington sits above 24% of rated Washington bridges on inventory load rating (23 t), while its 1928 build year is earlier than 95% of Lewis's recorded-year cohort (419 bridges).
SR 507 in Lewis, Washington is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1928, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 4. The lowest applicable rating sets the federal condition category, so this Poor 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 WA:000000HV0000000
PRE-1950 · STEEL · SINGLE-SPAN · SUPER-LED · ARTERIAL-ADT · STANDARD-LOAD · CAT-POOR
- PRE-1950 Pre-1950
- STEEL Steel
- SINGLE-SPAN Single span
- SUPER-LED Superstructure-led
- ARTERIAL-ADT Arterial ADT
- STANDARD-LOAD Standard load
- CAT-POOR Poor
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: SR 507
The SR 507 bridge in Lewis, Washington carries SR 507 over SKOOKUMCHUCK RIVER. It was built in 1928, making it 98 years old today. The structure is built primarily of steel and spans 1 section, stretching 56.7 meters (186 feet) end to end. Daily traffic averages 8,699 vehicles, placing it in the moderately-trafficked tier of Washington bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 4/9, substructure at 5/9. The weakest component sits in poor condition. A component scored 4 or below, placing this bridge in the federal Poor condition category rather than declaring it unsafe or closed.
How SR 507 compares
Age against the county: built in 1928, earlier than 396 of Lewis's 419 bridges with a recorded construction year (95%), against a county median build year of 1964. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Washington bridges with a recorded inventory load rating (8,455 of 8,474 rated).
SR 507 vs every rated Washington bridge
Inventory load rating (metric tons), FHWA NBI, this state
23 Top 76% higher than 24% of 8,455 bridges
rated Washington 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.
Lewis inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 419 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
- 1928
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 56.7 m (186 ft)
- Deck Width
- 6.7 m (22 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 8,699 vehicles/day
- Structure Number
- 000000HV0000000
Condition Analysis
- • At 6/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • At 4/9, the superstructure (beams and supports above the deck) is in poor shape, with advanced wear on file for this vintage.
- • At 5/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
SR 507 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 SR 507 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 SR 507?
SR 507 in Lewis, Washington has a deck rating of 6/9, superstructure rating of 4/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is SR 507 inspected?
SR 507'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 8,699 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. SR 507 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 SR 507?
SR 507 has an NBI inventory load rating of 22.7 metric tons.
Who is responsible for maintaining SR 507?
SR 507 is owned and maintained by State Highway Agency.
How old is SR 507 and does age affect safety?
SR 507 was built in 1928, making it 98 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.