Oakland cbs sf demolition of the marine foundations of the san franciscooakland bay bridge s old eastern span finished up saturday morning. New bay bridge bike path and suspension tower, september 20. Main cable corrosion, cracked welds at the san franciscooakland bay bridge. Bay bridge bolts show more ominous cracks, may not even be safe to drive on the saga of the cracked bolts on the bay bridge s twoyearold eastern span. The san francisco bay bridge in california is a stunning example of a wellbuilt bridge in the united states.
Jun 26, 20 donald macdonald, principal with macdonald architects, discusses his work designing the new eastern span of the san franciscooakland bay bridge at his offices in san francisco on friday, may 24. New san franciscooakland bay bridge to open day after labor. Highstrength steel is what allows the new bridge to be much more streamlined than its cousins around the bay. Bay bridge east span metropolitan transportation commission. San francisco bay bridge in danger of collapsing under its. Bay bridge architect shares concepts behind aesthetics on new. Manny crisostomo the sacramento bee the new bay bridge suspension span. Demolition of old bay bridge completed after short delay. The problems with the newly constructed eastern span of the bay bridge may, quite literally, go deeper than previously thought. The eastern span replacement of the san francisco oakland bay bridge was a construction project to replace a seismically unsound portion of the bay bridge with a new selfanchored suspension bridge and a pair of viaducts. By the time the new east span opened in september 20 the price tag for that span alone had reached a. Aerial photographs of the san francisco oakland bay bridge from the aerial photography library of aerial archives. State officials say tiny cracks found on some of the rods on the new san francisco oakland bay bridge tower potentially endanger more than 400 remaining fasteners that secure the tower to the.
Driving across the san francisco oakland bay bridge. The chinesemade bay bridge continues to fall apart. New san franciscooakland bay bridge flythrough youtube. One signature element transforms the san franciscooakland bay bridge into a global icon the selfanchored suspension span sas. The san franciscooakland bay bridge, known locally as the bay bridge, is a complex of.
The san franciscooakland bay bridge is the regions workhorse bridge, carrying more than a third of the traffic of all of the stateowned bridges combined. The firm that designed the new bay bridge eastern span warned caltrans as the bridge neared completion that some of its welds could crack prematurely. Pdf some highstrength galvanized anchor rods in the new span of the san franciscooakland bay bridge failed after being tensioned. These include suspect concrete in the tower foundation, broken anchor bolts, rust on the main cable. When recent tests revealed rust and tiny cracks on one of the massive steel rods that secure the tower of the new san franciscooakland bay bridge to its foundation, bridge officials expressed. The bridge, a 590foot long span that arches 140 feet above the duwamish waterway, will remain closed to traffic at least until 2022 because of the prolonged efforts needed to first brace and then. Construction milestones are being replaced with bad days at the new san franciscooakland bay bridgetoo many of them. The golden gate bridge, for example, is held together by over one million rivets. Doug coe, a normally confident engineering manager for the new east span of the san franciscooakland bay bridge, walked into the nearby oakland. May 06, 2015 caltrans tests indicate that salt water from the bay may be seeping into the foundation of the new bay bridge eastern spans tower, an ominous prospect that raises questions about the longterm. Repair plan set, steel ordered to fix cracked beams at. In this lesson, we will learn about its history, construction and many facts. More than 8,300 men worked on the bridge, which opened nov.
Weeks after rods snapped after posttensioning, officials discovered about 20 cracked welds on the signature tower of the span. The mystery of the brandnew bay bridges corroded steel. To survive a quake, new bay bridge span will offer least. This firstever, singletower, selfanchored suspension sas bridge is the largest public infrastructure project in californias history. How caltrans choice of an inexperienced company left structural doubts and cost taxpayers. Driving across the san francisco oakland bay bridge bien tran. The new suspension span uses an entirely different technique.
Inspectors discovered a crack in a crucial component of the east span of the bay bridge on saturday that could jeopardize the planned tuesday morning reopening of the bridge. New cracks found on bay bridge rods abc7 san francisco. San franciscooakland bay bridge fluor construction. The sas is the largest bridge of its kind anywhere in world 2,047 feet, one of many firsts.
Tests of bay bridge rods find more widespread cracking. The new eastern span of the bay bridge in san francisco. The firm that designed the new bay bridge eastern span warned caltrans as the bridge neared completion that some of its welds could crack prematurely under the constant pounding of cars and trucks. Hidden tunnel reveals engineering secrets of the new bay. From one approach to the other, the san francisco bay bridge is 43,500 feet long 8. If youve wanted to bike the entire bay bridge, this meeting is for you. Corrosion plagues new bay bridge span the sacramento bee. Ominous signs of problems with new bay bridge foundation. It is composed of two complete suspension spans connected at a center anchorage. San francisco kpix 5 while the new eastern span of the bay bridge will open to traffic in september, the work needed to take down the old roadway is expected to take years. Retrofit work included adding massive amounts of steel and concrete to strengthen the entire west span.
How the steel beams cracked at the new transbay terminal. The new eastern span of the san francisco oakland bay bridge in 2014. Bay bridge architect shares concepts behind aesthetics on. No cracks were found in the two girders that span first street, but they will be reinforced for protection as well.
New san franciscooakland bay bridge east span opens to. Plans for a second bay bridge are almost as old as the existing span itself. The two san francisco bay bridge sections combined are 23,000 feet long 4. The existing eastern bridge, far left, will be torn down after the new bridge is complete. Engineers found hundreds of cracks in california bridge. Experts caltrans tapped to study bay bridge tower rods stir doubt. San francisco ap state officials say tiny cracks found on some of the rods on the new san franciscooakland bay bridge tower potentially endanger more than 400 remaining fasteners that secure the tower to the foundation in an earthquake. There are serious problems with the san franciscooakland bay bridge. Pdf san franciscooakland bay bridge anchor rod cracking. State officials say tiny cracks found on some of the rods on the new san franciscooakland bay bridge tower potentially endanger more than 400. New san franciscooakland bay bridge opens after 12 years. Well present the proposed plan and answer questions on our feed.
Jan 24, 2014 troubling new questions have been raised about the construction of the new eastern span of the bay bridge, and if the allegations in the report hold true there needs to be accountability at the. The san francisco oakland bay bridge, known locally as the bay bridge, is a complex of bridges spanning san francisco bay in california. Eastern span replacement of the san franciscooakland bay bridge. May 18, 20 doug coe, a normally confident engineering manager for the new east span of the san franciscooakland bay bridge, walked into the nearby oakland project office looking as if he were fighting back. The tower of the eastern span of the bay bridge is seen in san francisco, calif. The new eastern span of the bay bridge is illuminated at daybreak in san.
Troubled welds on the bay bridge the sacramento bee. When recent tests revealed rust and tiny cracks on one of the massive steel rods that secure the tower of the new san franciscooakland bay bridge to its foundation, bridge. A drone view of the new salesforce transit center, right, and bay bridge approach, to the left, are seen in downtown san francisco, calif. Bay bridge crack repaired in a weekend popular mechanics. Jun 24, 2015 state officials say tiny cracks found on some of the rods on the new san franciscooakland bay bridge tower potentially endanger more than 400 remaining fasteners that secure the tower to the.
Driving over the bay bridge into san francisco going home to. The new eastern span of san franciscos bay bridge carries some 270,000 cars every day, but now that cracks are starting to be found in the. This is a time lapse of the san francisco oakland bay bridge from september 2008 to may 2016, enjoy. Kgo caltrans officials are warning that ominous new cracks have been found on bolts on the new eastern span of the bay bridge. A computer simulation showing the new bay bridge now under construction. The man arguably most responsible for overseeing the new san franciscooakland bay bridge project, metropolitan transportation commission chief steve heminger, has escalated his attacks against. Dec 19, 2014 main cable corrosion, cracked welds at the san franciscooakland bay bridge. The bay bridge connects san francisco and oakland, and carries about 280,000 vehicles a day.
The span replacement took place between 2002 and 20, and is the most expensive public works project in california history, with a final price tag of. Aug 15, 20 new san franciscooakland bay bridge to open day after labor day bay bridge will close from wednesday, august 28 at 8 p. The chronicle is right to call out bay bridge defects. Multiaxle vehicles effective january 1, 2019 through december 31, 2021, rates are as follows. The bridge opened to traffic on the eve of september 2, 20. Workers discovered the crack near a weld about 3 a. With its sweeping views of the bay, its tremendous 525foottall tower, its asymmetric design, and bicycle and pedestrian path, the bay bridge is a stateoftheart marvel to behold. The saga of the cracked bolts on the bay bridges twoyearold eastern span continues as experts.
Tiny cracks found on some of the rods on the new bay bridge tower potentially endanger the rest of the more than 400 remaining fasteners that secure the tower to the foundation in an earthquake. Jun 08, 2014 bay bridges troubled china connection. Crossing the old san franciscooakland bay bridge youtube. The west span lies between yerba buena island and san francisco. This engineering and construction marvel raises the bridge building bar to new. On friday, caltrans said additional tests showed microcracks in a.
Jun 24, 2015 tiny cracks found on some of the rods on the new bay bridge tower potentially endanger the rest of the more than 400 remaining fasteners that secure the tower to the foundation in an earthquake. Tiny cracks found on some of the rods on the new bay bridge tower potentially endanger the rest of the more than 400 remaining fasteners that secure the tower to. The chinese company hired to build key parts of the san franciscooakland bay bridge had never. Testing has revealed rust and cracks in a steel rod anchoring the central. Ominous new cracks found on bay bridge rods sfgate. Caltrans chief engineer for the span, brian maroney, said earlier this. San francisco oakland bay bridge aerial photography. Driving into san francisco over bay bridge towards oakland to hwy 580. This engineering and construction marvel raises the bridge building bar to new heights. Eastern span replacement of the san franciscooakland bay. Cracks, doubts haunt bay bridge tower rods the sacramento bee.
San francisco history center, san francisco public library, san francisco, ca. Caltrans was warned bay bridge welds could crack sfgate. The eastern span replacement of the san franciscooakland bay bridge was a construction project to replace a seismically unsound portion of the bay bridge with a new selfanchored suspension bridge sas and a pair of viaducts. San francisco bay bridge in danger of collapsing under its own weight the new eastern span of san francisco s bay bridge carries some 270,000 cars every day, but now that cracks are starting to be found in the structural rods, experts have begun to question the bridges stability.
San francisco bay bridge in danger of collapsing under its own. Bay bridge tests, repairs spur new concerns about spans durability. The september 20 opening of a new east span of the san franciscooakland bay bridge culminates a yearslong process to fix the structure after it was damaged during the 1989 loma prieta earthquake. New san franciscooakland bay bridge opens, tad early cbs news. Tiny cracks found on some of the rods on the new bay bridge tower. The eastern span replacement of the san franciscooakland bay bridge was a construction project to replace a seismically unsound portion of the bay bridge. The bay bridge doesnt just span san francisco bayit practically. Demolition of old bay bridge to take years cbs san francisco. The largest span of the original eastern section was a cantilever bridge. Bad bolts have dealt a heavy blow to public trust of the new bridge.
Bay bridge east span the 20 opening of the new east span on the bay bridge added another jewel to the collection of architectural and engineering gems that adorn san francisco bay. The removal of the remaining marine foundations of the original east span, including a series of implosions anticipated over several weekends this fall, has been scheduled for six weekends, starting labor day weekend, september 2, and then every other weekend through midnovember 2017. Sep 03, 20 driving west from the toll plaza across the new eastern span of the san franciscooakland bay bridge to treasure island and then back to oakland on the first full day the bridge was open to traffic. As part of interstate 80 and the direct road between san francisco and oakland, it carries about 260,000 vehicles a day on its two decks. Included are aerial photographs of the construction of the replacement of the east span of the bridge, the toll plaza and various aerial perspectives on the suspension and cantilevered sections of the bay bridge. Dianne feinstein on wednesday sharply criticized the current plan to increase bay area bridge tolls and resurrected her call for construction of another span from the east bay to the.
The san franciscooakland bay bridge, known locally as the bay bridge, is a complex of bridges spanning san francisco bay in california. Donald macdonald, principal with macdonald architects, discusses his work designing the new eastern span of the san franciscooakland bay bridge. Oct, 2015 the new eastern span of the san franciscooakland bay bridge seen on september 3, 20. Bay bridge bolts show more ominous cracks, may not even be. Army and navyat the time the biggest stakeholders when it came to bay trafficjointly.
This video captures the highlights of that journey, from planning and construction. Currently reading repair plan set, steel ordered to fix cracked beams at. Nearly 250,000 vehicles cross the span, which connects san francisco with oakland and other east bay communities, each day. New san francisco transit center closes after crack found in beam. Jun 24, 2015 the new eastern span of san franciscos bay bridge carries some 270,000 cars every day, but now that cracks are starting to be found in the structural rods, experts have begun to question the bridges stability. New cracks found on san franciscooakland bay bridge rods. New cracks found on san franciscooakland bay bridge cbs. San franciscos golden gate bridge may have celebrated its 75th anniversary with glorious fanfare last year, but its the citys other bridge, the bay bridge, that transformed into the largest led light sculpture in the world on march 5. Bay bridge construction raises major questions the san. Seattle ap the west seattle bridge will remain closed to traffic until 2022 to brace and then repair the cracking concrete main span, city of seattle officials now predict. Cracked west seattle bridge shut until at least 2022.
The selfanchored suspension tower may be what makes the new bay bridge tower iconic, but a hidden aspect of the structure actually acts as the nerve center of the new eastern span. The double deck bridge was completed in 1936, just six months before the opening of the more famous golden gate bridge. In an investigation released over the weekend, the san francisco chronicle reported that the bridge s iconic tower is anchored by some 400 steel bolts that may be at risk of cracking. Bay bridge west span bike path when the new bay bridge east span opened in 20, pedestrians and bicyclists fell in love with the 15footwide shareduse pathway that stretched initially from oakland to the iconic single tower and, since 2016, all the way to yerba buena island. Jun 22, 20 thats the question as we draw closer to when the new eastern span of the bay bridge is supposed to open.
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