Here it is...the answer is the Severn Bridge that spans the River Severn from England to Wales or vice versa! So the bridges are: Top left: The Megler-Astoria Bridge over the Columbia River, from Washington to Oregon. Top center: Severn Bridge. Top right: Hawthorn Bridge, Portland, Oregon over the Willamette River. Bottom right: Tacoma Narrows Bridge, Gig Harbor to Tacoma, Washington. Bottom center: Yaquina Bay Bridge, Newport, Oregon. Bottom left: Sydney Harbour Bridge, Sydney, Australia.