Smarting from a second emergency closure of the Oakland-San Francisco Bay Bridge in two months, the California Dept. of Transportation is exploring long-term repairs for a cracked eyebeam until the crossing’s $6.3-billion modernization is completed in 2013. Caltrans engineers are considering replacing part or all of the truss system that has a cracked eyebeam, discovered by inspectors on the 73-year-old cantilevered eastern span during a Labor Day closure. Rancho Cordova, Calif.-based C.C. Myers Inc. was installing a 288-ft detour ramp as part of the reconstruction when inspectors found the 1½ in. crack in a 2-in.-thick, chain-like steel beam. The cracked
Emergency teams worked to retrieve the bodies of four of five workers who died after falling 15 meters in a bridge falsework collapse on Nov. 7 in the tiny Pyrenees principality of Andorra. Six more were injured. The accident occurred at the western portal of the recently completed Dos Valires tunnel. The men were working on falsework for a twin-deck, partially cable-stayed bridge being built as an access to the 2.9-kilometer-long tunnel from an existing highway. Workers reportedly had been pouring concrete for several hours when the falsework collapsed. No official cause has been given as investigations continue. The bridge’s
The scheduled December groundbreaking of the first phase of the $5.5 billion Honolulu Rail Transit Project has been delayed by at least a month, says project spokesman Scott Ishikawa. “Based on the time needed to get participating agencies to review the draft environmental impact statement and the time needed for the federal and state level to approve the final EIS, we decided to push back construction until the end of January,” he says. In late October, the city awarded the $482.9-million first-phase contract to Omaha-based Kiewit Pacific Co. The 6.5-mile design-build project is expected to take three years to complete.
Expert crews are rappelling down a steep wall of jagged, unstable rocks above Interstate 40 in western North Carolina, beginning the cleanup and repair process of an Oct. 25 rockslide that shut the highway down. The repair could take four months and cost $10 million. The 500,000-ton rockslide on U.S. Forest Service land caused the North Carolina Dept. of Transportation to declare an emergency and Gov. Beverly Perdue (D) has asked the U.S. Dept. of Transportation to declare the rockslide a federal disaster area. Crews with contractor Phillips & Jordan Inc., Knoxville, Tenn., are working with rock stabilization specialists from
While the overall economy shows signs of slowly coming back to life, the airline industry continues to struggle. Over the past year, the combination of substantially lower passenger traffic, still-wobbly financial markets and nervous carriers has curtailed the revenue streams airports typically count on for major capital projects. Photo: McCarran International Airport Work on a $2.4-billion project at McCarran International Airport in Las Vegas continues through 2009, even as other projects were put on hold. Photo: Denver International Airport Stimulus money came to the rescue of hundreds of airports with long-standing maintenance needs, including Denver International. Related Links: The Top
Omaha-based Kiewit Pacific Co. was awarded a $482.9-million contract for the first phase of construction for the 20-mile Honolulu Rail Transit Project. The 6.5-mile design-build project is expected to break ground in December and be completed in late 2012. The contract came in $90 million below the engineer’s $570-million estimate. “Because of the sluggish economy, construction bids are coming in much lower than anticipated,” says Scott Ishikawa, project spokesman. He says that has prompted the city to seek proposals now for the next phase of the $5.5-billion project.
Claimed as the world’s largest seismicly isolated building, Istanbul, Turkey’s new 200,000-sq-meter Sabiha Gökçen International Airport terminal opened at the end of October. Designed for a 7.5 to 8.0 moment magnitude quake and built in just 18 months, the roughly $600-million terminal sits on 300 isolators, according to lead designer Arup Group Ltd. Construction was by the locally based LIMAK–GMR Joint Venture. Photo: Arup Group
As 280,000 daily vehicles resumed using the San Francisco-Oakland Bay Bridge on Nov. 2 after a six-day repair of a steel saddle that holds a cracked truss section in place, engineers and metallurgists were still investigating why the original Labor Day weekend fix failed so quickly. Photo & Diagram: Caltrans Bay Bridge closed down for nearly a week after steel members repaired in September fell into traffic. A second emergency contractor again addressed a cracked eyebar in the truss. The Oct. 27 failure occurred when a 5,000-lb crossbeam and steel connectors fell into afternoon traffic, causing one accident and a
California Dept. of Transportation delayed opening of the San Francisco-Oakland Bay Bridge until federal inspectors sign off on the second bridge repair since Labor Day. The transportation corridor, which carries an estimated 280,000 cars per day, closed Tuesday evening after a steel bar cracked during a windy afternoon commute, dropping a 5,000-lb crossbeam and steel connectors into traffic. The incident caused a non-injury accident and an enormous traffic jam. Caltrans officials said they were doing all they could to open before the Monday morning commute, but were putting safety first. Photo: Caltrans Related Links: Update: Fix Of Bay Bridge May
As California transportation officials vow to increase frequency of inspections on the troubled San Francisco-Oakland Bay Bridge, they had no firm estimate of when federal inspectors would okay its reopening to traffic. For the second time in two months, crews have worked non-stop to install an emergency eyebar repair on the critical crossing, which usually carries 280,000 daily vehicles. The original fix made over Labor Day weekend consisted of a steel saddle brace wrapping around a broken beam of the steel truss. That brace snapped during the windy Oct. 27 evening commute, dropping a 5,000-lb crossbeam and steel connectors into
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