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SR 104- Hood Canal Bridge- Pontoon Float Outs

Fourth Cycle -- August 1, 2008

The two pontoons in the fourth cycle -- U and W -- were the largest new pontoons built for the project.  They were floated out of the graving dock at Concrete Technology in Tacoma in about 40 minutes.  Float out ended new pontoon construction for the project.  View the Fourth Cycle Float-out Fact Sheet...

Third Cycle -- February 21, 2008

The four pontoons in the third cycle -- V, X, ZC and ZD -- took about two hours to float out from the graving dock at Concrete Technology Corporation in Tacoma. The float out began about 3:30 a.m. and was completed about 5:30 a.m.  Pontoons were taken to Todd Pacific Shipyards in Seattle.  View the Third Cycle Float-out Fact Sheet...

Second Cycle -- July 16, 2007


Third cycle pontoon float
out, February 21, 2008.

Second cycle pontoon float out, July 16, 2007.
Second cycle pontoon
float out, July 16, 2007.

First pontoon float-out, December 6, 2006.
First cycle pontoon float out, December 6, 2006.

The five pontoons in the second cycle of pontoon construction- named NA, NB, YD, YE and YF, were completed one month ahead of schedule. They began floating about 6 p.m. on Monday, July 16, the first pontoon was towed out of the graving dock about 6:30 p.m. and all the pontoons were clear of the graving dock at 8 p.m.

First Cycle -- December 6, 2006

The first three pontoons, named PA, PB and Q began floating around 3:30 a.m. Wednesday, Dec. 6, 2006. Tugs then towed each individual pontoon from the graving dock to a temporary facility in Blair Waterway until they were towed to Seattle. Pontoon construction began in March 2006.

Watch a time-lapse video of the pontoons floating out of the graving dock on December 6, 2006: