US 101
Carrying US 101 over MILL CREEK
4.4 N JCT SR 107, Grays Harbor, Washington
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
US 101 in Grays Harbor, Washington sits above 52% of rated Washington bridges on inventory load rating (33 t), while its 1949 build year is earlier than 88% of Grays Harbor's recorded-year cohort (363 bridges).
US 101 in Grays Harbor, Washington is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1949, 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:0003581A0000000
PRE-1950 · CONCRETE · MULTI-SPAN · SUB-LED · ARTERIAL-ADT · STANDARD-LOAD · CAT-POOR
- PRE-1950 Pre-1950
- CONCRETE Concrete
- MULTI-SPAN 3 spans
- SUB-LED Substructure-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: US 101
The US 101 bridge in Grays Harbor, Washington carries US 101 over MILL CREEK. It was built in 1949, making it 77 years old today. The structure is built primarily of concrete continuous and spans 3 sections, stretching 18.3 meters (60 feet) end to end. Daily traffic averages 6,220 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 7/9, superstructure at 6/9, substructure at 4/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules.
How US 101 compares
Age against the county: built in 1949, earlier than 321 of Grays Harbor's 363 bridges with a recorded construction year (88%), against a county median build year of 1975. 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).
US 101 vs every rated Washington bridge
Inventory load rating (metric tons), FHWA NBI, this state
33 Top 48% higher than 52% 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.
Grays Harbor inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 363 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
- 1949
- Material
- Concrete Continuous
- Number of Spans
- 3
- Structure Length
- 18.3 m (60 ft)
- Deck Width
- 18.6 m (61 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 6,220 vehicles/day
- Structure Number
- 0003581A0000000
Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
- • At 4/9, the substructure (piers and abutments) is in poor shape, with advanced wear on file for this vintage.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
US 101 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 US 101 against other structures in Grays Harbor 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 US 101?
US 101 in Grays Harbor, Washington has a deck rating of 7/9, superstructure rating of 6/9, and substructure rating of 4/9 on the FHWA's 0–9 scale.
How often is US 101 inspected?
US 101'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 6,220 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. US 101 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 US 101?
US 101 has an NBI inventory load rating of 32.7 metric tons.
Who is responsible for maintaining US 101?
US 101 is owned and maintained by State Highway Agency.
How old is US 101 and does age affect safety?
US 101 was built in 1949, making it 77 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.