how many bridges in the city of pittsburgh
446
title: Pittsburgh text: damage to restore arm and leg muscle function was successful using robotic arms controlled via an embedded computer to translate signals near a small group of neurons with 200 needles. Pittsburgh is a city of bridges. With 446, it has three bridges more than Venice, Italy, which has historically held the title "City of Bridges." Around 40 bridges cross the three rivers near the city. The Smithfield Street Bridge was the world's first lenticular truss bridge. The city's Three Sisters Bridges offer a picturesque view of the city from the North. The south-western "entrance" to Downtown for travelers coming in title: Transportation in Pittsburgh text: directions simultaneously. Pittsburgh is a city of bridges: over 2,000 bridges dot the landscape of Allegheny County. The southern entrance to Downtown is through the Fort Pitt Tunnel and then over the Fort Pitt Bridge. The Panhandle Bridge, a former railroad bridge, carries the Port Authority's Blue and Red (formerly 42S/47L) subway lines across the Monongahela River. Other notable bridges are Fort Duquesne Bridge, the Liberty Bridge, and The Three Sisters. The city is served by Pittsburgh International Airport in suburban Findlay Township, Pennsylvania, formerly a hub and key focus city for US Airways. General aviation is served by the title: Washington Crossing Bridge (Pittsburgh) text: Washington Crossing Bridge (Pittsburgh) The Washington Crossing Bridge, commonly known as the Fortieth Street Bridge, is an arch bridge that carries vehicular traffic across the Allegheny River between the Pittsburgh neighborhood of Lawrenceville and the suburb of Millvale. The bridge was originally built to accommodate two lanes of traffic and one streetcar line; a 1982 re-decking allowed for the creation of a reversible third automobile lane. The bridge received its name because it is located at a historically significant site pertaining to George Washington's military career. In 1753, then-Major Washington was dispatched to give French forces an ultimatum to negotiate title: West End Bridge (Pittsburgh) text: West End Bridge (Pittsburgh) The West End Bridge is a steel bowstring arch bridge over the Ohio River in Pittsburgh, Pennsylvania, approximately one mile below the confluence of the Allegheny and Monongahela Rivers. The bridge was built from 1930 to 1932 primarily by the American Bridge Company (superstructure) and the Foundation Company (substructure) and was the world's first to use tied-arch technology on a large scale. It connects the West End to the Chateau neighborhood on the North Side of Pittsburgh. The bridge was placed on the National Register of Historic Places in 1979, and the List of Pittsburgh History title: Pittsburgh text: "City of Bridges" for its 446 bridges. The city features 30 skyscrapers, two inclined railways, a pre-revolutionary fortification and the Point State Park at the confluence of the rivers. The city developed as a vital link of the Atlantic coast and Midwest, as the mineral-rich Allegheny Mountains made the area coveted by the French and British empires, Virginians, Whiskey Rebels, and Civil War raiders. Aside from steel, Pittsburgh has led in manufacturing of aluminum, glass, shipbuilding, petroleum, foods, sports, transportation, computing, autos, and electronics. For part of the 20th century, Pittsburgh was behind only New York and Chicago in corporate