Earthquake

SALT LAKE CITY (AP) — A moderate earthquake on March 18 near Salt Lake City temporarily shut down a major air traffic hub, damaged a spire atop a temple and frightened millions of people. There were no reports of injuries. The 5.7-magnitude quake just after 7 a.m.

Talk of retrofitting structures for earthquake safety is common in western states. In California, where earthquake drills in schools are mandatory and earthquakes fairly common, it's been a key point of survival for many decades. In Oregon and Washington, which see fewer of the tremblers, but are on alert for the mega-quake expected when the Cascadia Subduction Zone ruptures, the protection is somewhat newer.

Caltrans wasted no time getting to work on a state road extensively damaged in the July 6 evening earthquake. The 7.1 magnitude earthquake in eastern California left three sections of SR 178 buckled and cracked. The state transportation department awarded a $3 million repair contract to Sully-Miller Contracting Co., based out of Brea, Calif.

The first sign of trouble was the sound. Very loud. Like a low flying 747, recalled Shannon McCarthy, administration operations manager of the Alaska Department of Transportation. Then came the jolt and McCarthy knew this was no low flying plane. It was the beginning of magnitude 7.0 earthquake that would shake southcentral Alaska for 18 to 35 seconds and trigger aftershocks for weeks after.

The Legislative Budget and Audit Committee approved $25 million in federal receipt authority for the Alaska Department of Transportation & Public Facilities (DOT&PF) for repairs to earthquake damaged infrastructure. "We appreciate the support of the president and the Federal Highway Administration," said Alaska Gov.

With the restoration of the Glenn Highway northbound and southbound lanes early Dec. 5, essential travel routes have been restored so normal activities can start to resume. Alaska Department of Transportation & Public Facilities (DOT&PF) Commissioner John MacKinnon has been briefing Gov.

On Nov. 30, at 8:29 a.m., an earthquake measuring 7.0 struck the state of Alaska between Palmer and Anchorage. The event triggered a tsunami warning for coastal areas near Cook Inlet and the Southern Kenai Peninsula, which was later cancelled. While no significant injuries or deaths have been reported, there has been extensive road damage in Anchorage and the Mat-Su Valley.

A magnitude 6.6 earthquake struck Alaska on Nov. 30, centered about 7 mi. north of Anchorage, according to the U.S. Geological Survey. The Alaska Department of Transportation & Public Facilities immediately deployed crews to inspect roads and bridges following the quake, while also placing its Alaska Marine Highway System on alert due to Tsunami warnings issued by the National Weather Center; warnings which were subsequently cancelled by the NWS.

SAN FRANCISCO (AP) — As two of the city's most vaunted buildings sink or crack, an earthquake study released Oct. 4, recommended re-inspecting dozens of high-rises and beefing up construction codes for the growing crop of skyscrapers in the booming city.

Good news: A series of tests at the Earthquake Engineering Laboratory at the University of Nevada, Reno, has determined that accelerated bridge construction methods are safe and ready to be used on job sites. The tests, which were performed on enormous shake tables, took place on April 24, put a 70-ton, two-span, 70-ft.-long bridge through simulations of a 7.5-magnitude earthquake.

A 1,410-year-old building is a key resource for modern-day earthquake-safe building methods. Built in 607 A.D., Japan's 122-ft.-tall Horyu-ji temple is one of the oldest wooden structures in the world, and has survived almost 50 earthquakes at magnitudes of 7.0 and greater, the New York Daily News reported.