Dewatto Holly rd over Dewatto River
Mason County, Washington · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Dewatto Holly rd over Dewatto River in Mason County, Washington, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1967, making it 58 years old at the 2025 inventory.
- It carries about 200 vehicles a day (traffic count year 2020).
- Its listed owner is the county highway agency.
- It is one of 55 of the 136 inventoried bridges in Mason County rated fair (40.4%); 4 (2.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated June 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (47.47, -123.025)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete stringer or multi-beam girder |
| Length | about 55 ft |
| Location | 2.49 NE JCT Dewatto rd |
| NBI structure number | 083124000000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Washington department of transportation.
Busiest bridges in Mason County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 101 over Mill Creek | 1973 | 19,397 | Good |
| US 101 over Creek/rr/street | 1973 | 18,182 | Fair |
| US 101 over Matlock Rd | 1973 | 18,182 | Poor |
| SR 3 over Goldsborough Creek | 1923 | 17,285 | Fair |
| US 101 over SR 3 | 1972 | 17,050 | Fair |
| SR 3 over Deer Creek | 1957 | 15,878 | Good |
All bridges nearby: Mason County, WA bridge conditions · every bridge in Mason County · Washington bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.