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Crews have completed the first segment of balanced cantilever construction and will begin on another segment once the pier table at Pier 1 is complete. For more information on balanced cantilever construction, see page 2 of our May 2013 Construction Newsletter.
After a four day journey from Aberdeen, WA, Pontoon H enters Hiram M. Chittenden Locks in Ballard. Pontoon H is the 76th pontoon out of the 77 pontoons needed for the new SR 520 floating bridge. Build your own Pontoon H by visiting our website.
More information about the new SR 520 floating bridge is available on our website.
The former chain ferry from Cowes now appears to be laid up at Gosport with a foot ferry currently operating in Cowes until a replacement car ferry is delivered in 2018.
Several tugboats skillfully work to guide the newest six pontoons for the new SR 520 floating bridge as they float-out of the casting facility in Aberdeen.
Construction crews working on the SR 520 Pontoon Construction Project took advantage of an extra-high tide April 15, 2014, to float six concrete pontoons into the Chehalis River. These six pontoons represent the fourth of six construction cycles being built in Aberdeen and are destined for Lake Washington to form the backbone of the new SR 520 floating bridge.
Looking west toward the new floating bridge and Seattle, a derrick crane lowers the girders into place on the stationary section of the new bridge, Pier 1.
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 in Medina continue to build roadway support structures, or pier tables, on the top of Pier 1. When complete, crews will begin building balanced cantilever spans towards Pier 2 and Pontoon W.
To celebrate Seattle Mariners opening night, the floating bridge's sentinels are lit blue and teal, the Mariners signature colors.
The anchor cable for each fluke anchor is attached to the anchor before it is lowered to the bottom of Lake Washington.
Fluke anchors are placed in the deepest parts of Lake Washington, typically between 180 and 200 feet below the surface. The anchor cable is then slowly fed off the spool and into the lake.
The anchor cables are 3-1/8 inches in diameter and vary in length. The cable for the last anchor, seen in this photo, is over 700 feet long.
Working near Medina, alongside the east high-rise of the new SR 520 floating bridge, crews have begun assembling the west high-rise atop pontoons B, C, and D. Once crews have completed installing the columns, crossbeams, girders, and new roadway, crews will move the entire west high-rise structure as one piece across Lake Washington where it will be joined with Pontoon A.
More information about the new SR 520 floating bridge is available on our website.
State Route 520 is a state highway and freeway in the U.S. state of Washington. It extends 12.82 miles (20.63 km) from Seattle in the west to Redmond in the east.
SR-520 originates at Interstate 5 in Seattle at the north end of Capitol Hill just south of Roanoke Park.
It bridges Portage Bay on a viaduct, crosses through the Montlake neighborhood, and continues east on a causeway through the marshlands of the Washington Park Arboretum and across Foster Island. From there it crosses Lake Washington on the Evergreen Point Floating Bridge (1963) to Medina. At 7,578 feet (2,310m), it is the longest floating bridge in the world.
Source: www.wikipedia.org
July 16, 2011, Bellevue, Washington, taken from here.
Overnight, crews placed this new concrete roadway under the Evergreen Point Road lid. Concrete roadway is used to prolong the life of a driving surface as it is typically more durable than asphalt.
In January 2013, crews completed construction of the pier table atop the south column of Pier 1. In the coming weeks, workers will begin balanced cantilever construction from this pier table connecting with the balanced cantilever bridge constructed from the south column of Pier 2. For more information on balanced cantilever construction, see page 2 of our May 2013 Construction Newsletter.
As traffic moves smoothly across the current SR 520 floating bridge, construction crews work to build roadway for the new SR 520 bridge. Drivers and transit riders can expect to cross Lake Washington using the new bridge in spring 2016.
Before making its way to the Hiram M. Chittenden Locks in Ballard, Pontoon E and the derrick barge Olympia have a short "layover" in Shilshole Bay.
Pontoon E is the 49th 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.
Meanwhile on Pontoon W, the western end of the floating bridge, crews work to align the girders for the transition span. The transition span connects Pier 1 (which is stationary) to Pontoon W (which is floating).
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.
Building the rebar cage for one of the interior walls of the floating bridge pontoons. www.wsdot.wa.gov/Projects/SR520/Pontoons.htm
Looking west toward Seattle from the shoreline in Medina, the new SR 520 east approach begins to take shape just north of the current bridge. Over the past several months, crews have been working to complete the south span of the east approach, which will carry eastbound traffic as it transitions from the new SR 520 floating bridge to the land-based roadway in Medina. Later this year, crews will begin construction of the north span which will carry future westbound traffic.
Construction crews continue to make progress on pier tables, or roadway support structures, on the top of Pier 1. Once complete, crews will begin building balanced cantilever spans toward Pier 2 and Pontoon W.
Crews working for the Washington State Department of Transportation closed all lanes of SR 520 the weekend of June 6-9, 2014. Working in the closed lanes of the highway allowed crews to continue building the new West Connection Bridge, pave on the Eastside, as well as complete several other construction activities. In this photo, crews working on the Eastside lower in a concrete form using a crane.
Looking west toward Seattle, you can see two of the four sentinel elements, which mark the ends of the new floating bridge. There are sentinels at both ends of the bridge which tell you when you pass from floating bridge to land-based bridge.
A lovely juxtaposition of bridge and nature, the sunrises behind one of four newly completed sentinels.
Crews carefully install new asphalt pavement near the brand new concrete pavement installed overnight. They had to wait for the concrete to mature before they could place the asphalt because the vibrations from installing the asphalt can disturb the concrete.
A tugboat idles in the Grays Harbor pontoon launch channel in the late-night darknes, April 28, 2013. It stands ready to tow the next SR 520 pontoon out of the casting basin.
Progress continues on the SR 520 Pontoon Construction Project, as the second cycle of new pontoons left the Aberdeen casting basin overnight April 28 and 29, 2013. The late-night timing coincided with the favorable high tide needed for float-out.
In the second cycle, crews built three longitudinal pontoons, two supplemental stability pontoons and one cross pontoon. The 360-foot-long longitudinal pontoons are the backbone of the new SR 520 floating bridge being built on Lake Washington; the supplemental pontoons provide stability and flotation, and the cross pontoons cap the bridge on the east and west ends. Crews will build a total of six cycles of new pontoons in Aberdeen.
What would you do if there were a fire on the new floating bridge?
These standpipes will act similarly to a fire hydrant on land. However, the water they will produce will actually be pulled directly from Lake Washington. This innovative design was developed as a way to solve the issue of bringing water from land, across a joint that moves by over two feet twice a year.
Pontoon N is guided through Portage Bay by the tugboat Taurus, after a four-day journey from Aberdeen, Wash. Pontoon N was the 36th pontoon to arrive on Lake Washington, out of a total of 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.
Crews pour asphalt at the east end of the new SR 520 floating bridge to tie westbound and eastbound lanes into the Evergreen Point Lid transit station.
The first new State Route 520 bridge pontoon is on its way to Lake Washington. Crews began towing the pontoon from Grays Harbor at 9 a.m. Aug. 8 and expect to complete the journey to the Hiram M. Chittenden Locks in Seattle on Saturday, Aug. 11. The pontoon is expected to enter the locks late Saturday night or early Sunday morning.
Contractor crews working for the Washington State Department of Transportation built six pontoons in the first construction cycle in Aberdeen. This pontoon is one of three longitudinal pontoons built in the first cycle and measures 360 feet long, 75 feet wide and 29 feet tall and weighs approximately 11,000 tons. The next pontoon is expected to be towed from Aberdeen later this week.
The new SR 520 floating bridge will require 77 pontoons, including 33 being built in Aberdeen and 44 in Tacoma. Twelve pontoons were successfully floated out of casting basins in Tacoma and Aberdeen between July 23 and July 30. WSDOT and contractors Kiewit-General and Kiewit/General/Manson, A Joint Venture continue to inspect and prepare the remaining pontoons for towing.
Project information is available at www.wsdot.wa.gov/Projects/SR520bridge.
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
The new east bound transition span sits just over one hundred feet to the north of the existing SR 520's east approach. The new floating bridge is being built near the old bridge, to help keep traffic moving during construction.
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.
Royal Navy aircraft carrier HMS Queen Elizabeth (R08) returning to her home port of Portsmouth, Hampshire UK.
This sentinel marks the east end of the new SR 520 floating bridge. The red light near the water indicates the edge of a bridge pontoon and the 70-foot-high east navigation channel.
The new floating bridge has a 14-foot bike and pedestrian path that runs along the north side of the bridge. Along the path there are five belvederes or resting places, where trail users can get out of the way of traffic and enjoy the view!
City of Kenmore Mayor David Baker, city council members, and city staff pose for a group photo as crews lower the final low-rise roadway deck section for the new SR 520 floating bridge.
Using a barge-mounted crane, crews lowered the last of 776 precast, Kenmore built, 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.
Pontoons QNW and BNW are guided through the Hiram M. Chittenden Locks in Ballard. Pontoon QNW was constructed in Tacoma, Wash.; Pontoon BNW was constructed and traveled all the way from Aberdeen, Wash.
Pontoons QNW and BNW were the 37th and 38th pontoons, respectively, to arrive on Lake Washington, out of a total of 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.
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.
Under April showers, Pontoon O travels through the Ship Canal near Seattle’s Fremont neighborhood as it makes its way to Lake Washington. Pontoon O is the 34th pontoon to arrive on Lake Washington, out of a total of 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.
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.