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Crews made great progress on substructure construction on top of Pontoon W. This month crews have been preparing to pour concrete that will form the cross beam on top of the support columns. The cross beam pour is scheduled for late December 2013.
Crews move into place the last of 776 low-rise roadway deck sections for the new SR 520 floating bridge.
Using a barge-mounted crane, crews lowered the last of 776 precast, interlocking roadway deck sections onto the new floating bridge. The setting of this final, 100-ton deck section came less than a year after crews set the first low-rise roadway deck section on Sept. 8, 2014. More information about the new SR 520 floating bridge is available on our website.
Crews pressure washed the prefabricated interior precast panels destined for the Cycle 4 pontoons in Aberdeen. The casting basin facility was bustling with construction activity on Oct. 16, 2013 as crews geared up for building the next cycle of six pontoons for the new SR 520 floating bridge in Seattle.
Construction crews are underway on the fourth cycle of SR 520 bridge pontoons in Aberdeen. In this cycle, crews will build six total pontoons:
• Four longitudinal pontoons (360 ft. x 75 ft. x 29 ft.)
• Two supplemental stability pontoons (98 ft. x 60 ft. x 28 ft.)
In mid-December 2013 eight supplemental stability pontoons were floated onto Lake Washington. With the iconic Seattle skyline in the background Pontoon SSE is towed by the tugboat Terilyn.
During the second week of December 2013 eight supplemental stability pontoons were floated onto Lake Washington. The hollow, concrete and steel pontoons will flank the bridge’s larger, main pontoons to help stabilize the overall structure. In all, 77 pontoons will support the new floating bridge which, at 1.4 miles in length, will be the world’s longest stretch of floating highway.
The foot ferry was superceded by steam-powered chain ferry in 1926 (saving 15 miles miles off the road journey round the harbour). The steam ferry was built by J. Samuel White of Cowes at a cost of £12,000 and remained in service until 1958.
"Sun Ray" series, Thunder & Clayden, Bournemouth.
Postally unused.
Construction of the new SR 520 east approach structure involves building this cofferdam in Lake Washington. Crews will pump out the lake water from within so that the new support piers can be built in the dry lake bed. Photo taken from the worker access along the north edge of the existing SR 520 bridge.
High above Lake Washington, and with SR 520 in the background, construction crews carry on with their day as they continue to make progress in building roadway support structures on the top of Pier 1. In the distance, Pier 36, the west approach to the new floating bridge, is also visible.
SR 520 Floating Bridge and Landings Project Construction Manager Dave Becher provided media interviews during a boat tour of the floating bridge construction site and recently arrived coffer cell. Photo taken Nov. 22, 2013.
Here a WSDOT inspection team marks crack and areas that may need repair. Different colors are used to indicate different types of repairs.
Photo © Tristan Savatier - All Rights Reserved - License this photo on www.loupiote.com/11433024123
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Hindu devotees on Pontoon floating bridge, at the Kumbh Mela 2013 festival near Allahabad (India).
This was the morning of Kumbh Maha Snan or main bathing day, also called Mauni Amavasya, which is the the most auspicious morning for taking the holy bath in the Ganges river.
Kumbh Mela is the largest festival on Earth, taking place once every 12 years, with more than 50 million Hindu pilgrims gathering to pray and bathe in the holy Ganges river.
For more photos and info about the Kumbh Mela festival, read the album description.
If you like this photo, follow me on instagram (tristan_sf) and don't hesitate to leave a comment or email me.
Dubai shot from a airplane on a hazy afternoon. The frame building in the centre of the frame is actually called "Dubai Frame" which is a sightseeing attraction built like a photo frame to have a panoramic view Dubai. It is 150m tall, 105m wide, and expected to open soon.
Hi-Res: 500px.com/photo/169322111/
The large expansion joints between the movable floating bridge and the fixed approaches requires special barrier. This barrier is steel instead of the typical concrete barrier.
In this photo, crews carefully lift the steel barrier into place at the east end of the bridge.
Washington has a lot of water and a lot of lakes and many bridges. This is the I-90 floating bridge.
Three gate sections were removed from their position in the front of the casting basin, clearing the way for the final three pontoons to leave the basin.
WSDOT and contractor Kiewit-General marked a major milestone in Aberdeen on March 9, 2015, as crews prepared to float out the final three pontoons for the new SR 520 floating bridge. Several elected officials, community members, and even the Aberdeen High School marching band participated in the event at the casting basin facility. These three pontoons represent the last of the 77 pontoons needed for the new floating bridge, and mark the completion of all six cycles built in Aberdeen. Next, the three pontoons will be inspected and then towed to Lake Washington where they will be joined together to form the foundation of the new floating bridge. The new bridge is scheduled to open in spring 2016.
With the Olympic Mountains in the background, construction on the West Connection Bridge progresses on Lake Washington in Seattle. The West Connection Bridge is taking shape just north of the existing bridge. Once complete, the bridge will connect the new floating bridge to the existing SR 520 west approach. Just north of the construction zone, the west side staging area can also be seen, where pontoons are currently being moored until they are needed for the new floating bridge.
Architectural elements called sentinels will mark the ends of the world's longest floating bridge. Inside each of the four sentinels is a steel framework similar to this one.
In-basin construction of the Cycle 3 pontoons built in Aberdeen began in early May 2013. This photo, taken June 20, 2013, shows just some of the progress that's been made since then.
Construction crews are underway on the third cycle of SR 520 bridge pontoons in Aberdeen. In this cycle, crews will build six total pontoons:
• Four longitudinal pontoons (360 ft. x 75 ft. x 29 ft.)
• Two supplemental stability pontoons (98 ft. x 60 ft. x 28 ft.)
On Oct. 16, 2013 Kiewit-General crews prepared for the fourth cycle of pontoon construction in Aberdeen by placing the massive formwork into the casting basin. Once assembled, this formwork will be used to construct six new concrete pontoons for the State Route 520 floating bridge.
Construction crews are underway on the fourth cycle of SR 520 bridge pontoons in Aberdeen. In this cycle, crews will build six total pontoons:
• Four longitudinal pontoons (360 ft. x 75 ft. x 29 ft.)
• Two supplemental stability pontoons (98 ft. x 60 ft. x 28 ft.)
Working inside the coffer cell on Lake Washington, crews have begun repair work underneath Pontoon V’s keel slab. Epoxy injection has been completed. The parts visible in this photo will be grounded off prior to the application of carbon-fiber wrap.
These wooden walls are actually forms used to cast the concrete noise wall on the north side of the SR 520 roadway in Medina.
A new foundation for the future West Approach Bridge North (WABN) can be seen in the foreground, to the left. Note the end of the new floating bridge as it waits patiently for the new approach bridge, planned for completion in 2017.
Two workers team up to pass a rope from the tugboat to the top of a longitudinal pontoon built in Aberdeen, as crews prepared to float it out of the basin. The rope allows the tugboat to pull the pontoon out of its position in the basin.
WSDOT and contractor Kiewit-General marked a major milestone in Aberdeen on March 9, 2015, as crews prepared to float out the final three pontoons for the new SR 520 floating bridge. Several elected officials, community members, and even the Aberdeen High School marching band participated in the event at the casting basin facility. These three pontoons represent the last of the 77 pontoons needed for the new floating bridge, and mark the completion of all six cycles built in Aberdeen. Next, the three pontoons will be inspected and then towed to Lake Washington where they will be joined together to form the foundation of the new floating bridge. The new bridge is scheduled to open in spring 2016.
A KGM crew member applies sealant around the forms for the post-tensioning ducts. These ducts will allow crews to insert and tension the post-tensioning cables, which will add strength to and help seal crack in the concrete pontoons.
The SR 520 pontoon construction facility is located in Grays Harbor, Washington. In this photo, taken Oct. 16, 2013, construction crews worked nearly 30 feet above the basin floor to set forms for the next set of bridge pontoons.
Construction crews are underway on the fourth cycle of SR 520 bridge pontoons in Aberdeen. In this cycle, crews will build six total pontoons:
• Four longitudinal pontoons (360 ft. x 75 ft. x 29 ft.)
• Two supplemental stability pontoons (98 ft. x 60 ft. x 28 ft.)
On the first day of spring, construction crews are working inside the traveler form system as they prepare to pour concrete to build a new bridge segment on the south column of Pier 1 using the balanced cantilever (or segmental bridge) construction method.
For more information on balanced cantilever construction, see page 2 of our May 2013 Construction Newsletter.
Another angle showing pontoons and construction equipment at the east approach of the SR 520 Bridge.
Looking west toward Seattle, you can see the underside of both the old and new SR 520 floating bridges.
By the end of 2016 there will be only one 520 floating bridge.
Port Moody, BC Canada
Sasamat Lake is located within Belcarra Regional Park in Port Moody, British Columbia. It is one of the warmest lakes in Greater Vancouver. At the south end of the lake there is a floating bridge, used for fishing or swimming. At the north end of the lake is White Pine Beach.
(Wikipedia)
This is one of the warmest lakes in Metro Vancouver ! There is a nice easy trail around the lake, with minimal elevation gain. This place can get very crowded in the summer because it has two great sandy beaches (White Pine Beach). There is a very sturdy floating bridge across the lane with two wharves for fishing or jumping off. The lake has an area of about 45 ha (111 acres) and a perimeter of 3.2 kms.
Image best viewed in Large screen. Thank-you for your visit, and any comments or faves are much appreciated! ~Sonja
In this aerial photo taken above the City of Medina we can see construction crews busy at east approach landing. Over the summer crews have made progress on the balanced cantilever construction on the south column of Pier 2 and column work at Pier 1 and on Pontoon A.
Photo courtesy of Aequalis Photography.
Port Moody, BC Canada
Sasamat Lake is located within Belcarra Regional Park in Port Moody, British Columbia. It is one of the warmest lakes in Greater Vancouver. At the south end of the lake there is a floating bridge, used for fishing or swimming. At the north end of the lake is White Pine Beach.
(Wikipedia)
This is one of the warmest lakes in Metro Vancouver ! There is a nice easy trail around the lake, with minimal elevation gain. This place can get very crowded in the summer because it has two great sandy beaches (White Pine Beach). There is a very sturdy floating bridge across the lane with two wharves for fishing or jumping off. The lake has an area of about 45 ha (111 acres) and a perimeter of 3.2 kms.
Image best viewed in Large screen. Thank-you for your visit, and any comments or faves are much appreciated! ~Sonja
Crews excavate the final section of a deep trench crossing all lanes of SR 520 in Bellevue as a crane, seen in the background, lifts concrete culvert sections into place. The job requires careful choreography in order to complete the work and reopen the highway in time for the Monday morning commute.
The new, larger culvert will improve fish migration and is the first of eight culverts crossing SR 520 that will be installed between Medina and Bellevue during the next three years.
Looking west toward Seattle and the Olympic mountain range, the new SR 520 floating bridge continues to take shape as roadway deck sections for the low-rise section of the bridge is installed. Photo courtesy of HDR.
Visit the SR 520 pontoon tracking and bridge assembly page for the latest updates on bridge construction progress.
Over the summer construction crews made significant progress in completing balanced cantilever construction work on the south column of Pier 2. Learn more about balanced cantilever construction in our construction update newsletter.
June 20, 2013 - Ironworkers tie rebar at the pontoon construction site in Aberdeen, WA.
Construction crews are underway on the third cycle of SR 520 bridge pontoons in Aberdeen. In this cycle, crews will build six total pontoons:
• Four longitudinal pontoons (360 ft. x 75 ft. x 29 ft.)
• Two supplemental stability pontoons (98 ft. x 60 ft. x 28 ft.)
A carpenter carries formwork to the pontoon casting basin. Photo taken March 14, 2013.
Construction is complete on the second cycle of SR 520 bridge pontoons in Aberdeen. In this cycle, crews built six total pontoons:
• Three longitudinal pontoons (360 ft. x 75 ft. x 29 ft.)
• One cross pontoon (270 ft. x 75 ft. x 33 ft.)
• Two supplemental stability pontoons (98 ft. x 60 ft. x 28 ft.)
The five girders that will make up the east bound transition span on the new SR 520 bridge wait on a nearby barge before they are lifted and placed.
On Friday, June 27 crews working to construct a new SR 520 floating bridge installed a large hinged transition span that connects the moveable, floating bridge to the stationary, elevated bridge segment near Lake Washington’s eastern shore. The transition span is composed of five steel girders, each 190 feet long and 45 tons. Check out where the transition span will be and how it works.
Construction crews continue to make progress in completing the pier table atop the north column of Pier 1 in Medina. Once complete, this pier table will support roadway, carrying westbound traffic, as it transitions from a fixed, land-based bridge to the new SR 520 floating bridge.
Photo © Tristan Savatier - All Rights Reserved - License this photo on www.loupiote.com/11229462004
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This is one of the 18 temporary pontoon bridges (i.e. floating bridges) installed during the Kumbh Mela 2013 festival near Allahabad (India).
This pontoon bridge is over the Ganges (Ganga) river. Those floating bridges are built on top of large empty metal tanks, and are anchored to the river bottom with ropes on the upstream side of the bridge. Those bridges can support trucks up to 10 Tons, but to be safe, the maximum weight was set to 5 Tons. Those bridges are mostly used for pedestrian traffic. During high affluence periods when large crowds are crossing the floating bridges, bridges are one-way, with alternating direction for each other bridge. This rule was taken after a stampede in a previous year caused the bridge railing to fail and many people to fall in the river and drawn (most of the Hindu pilgrims cannot swim!).
The water was very low in the Ganges river at the time, so in fact this bridge was not floating, but just sitting on the sandy bottom of the shallow river.
Kumbh Mela is the largest festival on Earth, taking place once every 12 years, with more than 50 million Hindu pilgrims gathering to pray and bathe in the holy Ganges river.
For more photos and info about the Kumbh Mela festival, read the album description.
If you like this photo, follow me on instagram (tristan_sf) and don't hesitate to leave a comment or email me.
With all but 11 pontoons on Lake Washington, crowds gathered at the Hiram M. Chittenden Locks in Ballard to welcome Pontoon K to Seattle. Pontoon K is the 66th pontoon to arrive in Seattle, out of a total 77 pontoons needed to construct the new SR 520 floating bridge.
Visit the SR 520 pontoon tracker page for the latest updates on pontoon movements.
A variety of work takes place at the pontoon construction site in Aberdeen each day. In this photo, an ironworker makes measurements on reinforcing steel to be placed inside one of the massive concrete pontoons. Photo taken Dec. 12, 2013.
Construction crews are underway on the fourth cycle of SR 520 bridge pontoons in Aberdeen. In this cycle, crews will build six total pontoons:
• Four longitudinal pontoons (360 ft. x 75 ft. x 29 ft.)
• Two supplemental stability pontoons (98 ft. x 60 ft. x 28 ft.)
Under typical Northwest autumn weather, Pontoon L arrived in Seattle, after a four day journey from Aberdeen, Wash. to Lake Washington. Pontoon L is the 65th pontoon to arrive in Seattle, out of a total 77 pontoons needed to construct the new SR 520 floating bridge.
Visit the SR 520 pontoon tracker page for the latest updates on pontoon movements.
This bridge replaced the historic floating bridge on Lake Okanagan in 2008.
Seen from Knox Mountain - 90mm with a 4.6 second exposure.
Six more SR 520 supplemental stability pontoons are towed out of their Tacoma casting basin in pairs each evening, as the high tides allow.
Beginning July 27, 2013, crews floated eight supplemental stability pontoons out of the casting basin in which they were constructed, at the Concrete Technology Corporation site in Tacoma, WA. These pontoons are the third of six of cycles of pontoons to be completed at this site.
After each cycle, pontoons are inspected and temporarily moored prior to being towed to Lake Washington and used in assembly of the new SR 520 floating bridge.
Once the assisting T-pontoon is attached to the two supplemental stability pontoons, a tug boat (behind the pontoons) tows them out of the basin. A skiff assists from the other side. The Terilyn, a second tug, awaits alongside, in preparation for the short trip to Commencement Bay.
Beginning July 27, 2013, crews floated eight supplemental stability pontoons out of the casting basin in which they were constructed, at the Concrete Technology Corporation site in Tacoma, WA. These pontoons are the third of six of cycles of pontoons to be completed at this site.
After each cycle, pontoons are inspected and temporarily moored prior to being towed to Lake Washington and used in assembly of the new SR 520 floating bridge.
Pontoon G, the 75th of 77 SR 520 pontoons to arrive on Lake Washington, passes Seattle’s iconic Space Needle as it journeys through Lake Union on its way to the new bridge.
Build your own set of pontoons by visiting our website.