Bank Of Washington Address: 2687 Highway 100, Gray Summit, MO 63039 Phone: (636) 451-0062 Banks, Mortgages Other Businesses: Travelodge Six Flags Gray Summit at 2875 Highway 100, Gray Summit, MO 63089 Travelodge-Diamond Inn at 2875 Hwy 100, Gray Summit, MO 63039 Travelodge at 2875 Highway 100, Gray Summit, MO 63089 Roadhouse 100 at 2763 Highway 100, Gray Summit, MO 63039