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The Golden Gate Bridge, named one of the "Seven Wonders of the Modern World" by the American Society of Civil Engineers, was first opened in 1937. Serving as the Pacific Ocean's entrance to the San Francisco Bay, it stretches over 4600 feet, or about nine-tenths of a mile, providing a connection between San Francisco and the surrounding Northern Counties. The suspended towers reach 746 ft. upward and the channel clearance below is 220 ft. Consulting Architect Irving F. Morrow selected the orange vermillion color in order to accentuate the area's natural beauty. Referred to as "Golden Gate Bridge International Orange," the Bridge's color provides a welcome contrast to the silver, gray, or black shades usually given to most bridges. Due to the great design and continued maintenance of the Bridge, it may be able to effectively serve the public for 200 more years! However, in 1965, the increasing amounts of corrosion led to the implementation of a lead-removal and repainting project. Not only does this help the Bridge withstand the salty ocean air and a wide range of temperatures, but it adheres to strict environmental standards governing paint content.