In her speeches, Sarah Palin routinely and repeatedly uses the phrase: "I told the Congress ‘thanks, but no thanks,’ for that Bridge to Nowhere." In the McCain-Palin ads, the claim is that she "stopped the Bridge to Nowhere."
These are, again, demonstrable lies. Again I will cite Wikipedia, since it’s the fairest summary of the facts of the case, and includes all the links for you to see for yourself:
In 2006, Palin ran for governor on a "build-the-bridge" platform, attacking "spinmeisters" for insulting local residents by calling them "nowhere" and urging speed "while our congressional delegation is in a strong position to assist."
About two years after the introduction of the bridge proposals, a month after the bridge received sharp criticism from John McCain, and nine months into Palin’s term as governor, Palin canceled the Gravina Bridge, blaming Congress for not providing enough funding. Alaska will not return any of the $442 million to the federal government and is spending a portion of the funding, $25 million, on a Gravina Island road to the place where the bridge would have gone, expressly so that none of the money will have to be returned. Palin continues to support funding Don Young’s Way, estimated as more than twice as expensive as the Gravina Bridge would have been.