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On This Day | April 19

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1999
Southbound Chesapeake Bay Bridge-Tunnel opened

The Chesapeake Bay Bridge-Tunnel (CBBT, officially the Lucius J. Kellam Jr. Bridge-Tunnel) is a 17.6-mile (28.3 km) bridge-tunnel that crosses the mouth of the Chesapeake Bay between Delmarva and Hampton Roads in the U.S. state of Virginia. It opened in 1964, replacing ferries that had operated since the 1930s. With 12 miles (19 km) of bridges and two one-mile-long (1.6 km) tunnels, the CBBT is one of only 14 bridge-tunnel systems in the world and one of three in Hampton Roads.

1995
US Federal Building in Oklahoma City was bombed

In 1995, the US Federal Building in Oklahoma City, Oklahoma, was bombed by domestic terrorists. The building's collapse led to the deaths of 168 people, including 19 children. The disaster initiated the need for enhanced safety designs in civil engineering and heightened security in government and public buildings.

1937
The Golden Gate Bridge was completed

Located in San Fransisco, Golden Gate Bridge is a suspension bridge spanning the Golden Gate, the one-mile-wide (1.6 km) strait connecting San Francisco Bay and the Pacific Ocean. It is made of steel, is 1.7 miles (2.7 km) long, and its longest span is 0.79 miles (1.28 km). Recognized by the American Society of Civil Engineers as one of the Wonders of the Modern World, the bridge is one of the most internationally recognized symbols of San Francisco and California.

1916
Ephraim Shay died

Ephraim Shay was an American merchant, entrepreneur and self-taught railroad engineer who worked in the state of Michigan. He designed the first Shay locomotive and patented the type. He licensed it for manufacture through what became known as Lima Locomotive Works in Ohio; from 1882 to 1892 some 300 locomotives of this type were sold.

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