Old Hwy 99 North over Thomas Creek
Skagit County, Washington · rated Poor in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Old Hwy 99 North over Thomas Creek in Skagit County, Washington, is rated in poor condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
- It was built in 1934, making it 91 years old at the 2025 inventory.
- It carries about 5,234 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 6 of the 256 inventoried bridges in Skagit County rated poor (2.3%); 6 (2.3%) are rated poor.
- Its traffic status in the 2025 inventory is open, would be posted or closed except for temporary shoring or other temporary measures (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated August 2024, on a 24-month routine inspection cycle.
- A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.
View this bridge on a map → (48.52581, -122.34017)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 4 | 4 | Poor condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 4 | 4 | Poor condition |
Bridge details
| Structure | Timber stringer or multi-beam girder |
| Length | about 51 ft |
| Location | 1.4 N Jct Cook Rd. |
| NBI structure number | 082392000000000 |
| Condition class | Poor |
| Traffic status (item 41) | Open, would be posted or closed except for temporary shoring or other temporary measures |
| Last inspection (item 90) | August 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Washington department of transportation.
Busiest bridges in Skagit County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-5 over Skagit River | 1955 | 39,245 | Fair |
| I-5 over RR and Cameron Way | 1954 | 37,729 | Fair |
| I-5 over SR 20 BNSF RR & City St | 1955 | 37,394 | Good |
| I-5 over I-5 Drainage | 1970 | 36,919 | Good |
| I-5 over I-5 Drainage | 1972 | 35,558 | Fair |
| I-5 over Hill Ditch | 1957 | 33,686 | Fair |
All bridges nearby: Skagit County, WA bridge conditions · every bridge in Skagit County · Washington bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.