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The 554 connects Issaquah to downtown Seattle via Eastgate and I-90, serving commuters from the eastern suburbs. It provides a direct link between Issaquah and the city without requiring a transfer in Bellevue.
Buses run every 15-30 minutes during peak hours with limited off-peak service. Primarily a peak-hour commuter route with some midday and evening service.
There are a few ways to check when the next 554 bus is coming. Transit apps like OneBusAway and Google Maps show real-time arrivals. Sound Transit's website and station signs also display live times. For daily commuters, a dedicated display like NextStop shows 554 arrival times on your desk or counter — always on, no phone required.