SR 410 over Milk Creek
Yakima County, Washington · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SR 410 over Milk Creek in Yakima County, Washington, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1939, making it 86 years old at the 2025 inventory.
- It carries about 881 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 203 of the 557 inventoried bridges in Yakima County rated fair (36.4%); 31 (5.6%) 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 September 2023, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- 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 → (46.98265, -121.09372)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 6 | 6 | Satisfactory condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Timber slab |
| Length | about 38 ft |
| Location | 23.5 E Pierce Co |
| NBI structure number | 000000KH0000000 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Washington department of transportation.
Busiest bridges in Yakima County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Terrace Heights Dr over 18TH Street | 1979 | 28,500 | Fair |
| I-82 over Beech St | 1962 | 25,909 | Good |
| I-82 over Beech St | 1962 | 25,909 | Good |
| I-82 over Overflow Channel | 1960 | 25,406 | Fair |
| I-82 over Overflow Channel | 1960 | 25,406 | Fair |
| I-82 over Np Ry Moxee | 1961 | 25,406 | Poor |
All bridges nearby: Yakima County, WA bridge conditions · every bridge in Yakima County · Washington bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.