Deception Pass Bridge (Wikipedia) Deception Pass Bridge is the common name for two two-lane bridges on Washington State Route 20 connecting Whidbey Island in Island County, to Fidalgo Island in Skagit County, in the U.S. state of Washington. It was a Washington State Highways project, and included project elements built by young workers from the Civilian Conservation Corps. Completion of the bridge was a factor in the decision to build Naval Air Station Whidbey Island and helped Oak Harbor flourish. The bridge is a commonly photographed landmark of the Puget Sound region. 
Deception Pass looking eastIn the spring of 1792, Joseph Whidbey, master of HMS Discovery and Captain Vancouver’s chief navigator proved that it was not really a small bay as charted by the Spaniards (hence the name “Deception”), but a deep and turbulent channel that connects the Strait of Juan de Fuca with the Saratoga Passage, which separates the mainland from what they believed was a peninsula (actually Fidalgo Island and Whidbey Island). The only bridge that reaches Whidbey Island is the Deception Pass Bridge, State Route 20, which connects the north end of Whidbey to the mainland via Fidalgo Island.