First, the Moon has to be full, so there is only an opportunity for a lunar eclipse about once each month. Second, the Moon has to pass through Earth's shadow. The Moon's orbit around Earth is tilted a little, or off kilter by about 5 degrees to the Earth's orbit around the Sun.
From Wikipedia, the free encyclopedia. The Seven Mile Bridge is a famous bridge in the Florida Keys, in Monroe County, Florida, United States. It connects Knight's Key (part of the city of Marathon, Florida) in the Middle Keys to Little Duck Key in the Lower Keys.
Building was menacing. With deep water rushing below it, the Seven Mile Bridge had to be taller than the other bridges. Workers drove piersthe legs of the bridgedown into coral rock below the water. Twenty feet above the water, the piers were connected with riveted steel spans each weighing in at 19 tons.