The Baytown Bridge -- aka The Fred Hartman Bridge -- is a 2,475 foot cable-staved bridge spanning the Houston Ship Channel. The bridge replaced the Baytown-La Porte Tunnel, which was opened in 1953. The bridge is part of Highway 146 connecting Baytown, Texas and La Porte, Texas. The Fred Hartman Bridge completed construction on September 27, 1995. The suspension bridge is the largest of it's kind in the world and has a capacity of 200,000 vehicles per day compared to the Baytown Tunnel's capacity of 25,000 per day. Over 618 miles of cable strand were used in the construction of the bridge. There are 192 cables, the longest ones stretching 650 feet from the bridge to the towers. More than three million cubic feet of concrete, enough to pave 13.86 miles of two-lane highway with full shoulders, was used in the construction. More than 40 million pounds of steel was used to construct the bridge, the weight of over 16,000 automobiles. The double diamond towers supporting the bridge stand as tall as a 45-story building. Composite steel and concrete decks are 78 feet in width each way with a 15-foot separation between (total square footage coverage in excess of eight acres). The eight-lane, $100 million bridge was constructed by Williams Brothers Construction.