Though as a candidate for Governor, Palin supported the town of Ketchikan, Alaska's desire to build a bridge between itself and it's island based airport, upon entering office she reversed her position on the bridge. Despite that, construction contracts for the road to the bridge had already been signed (during the previous administration) and Palin was forced to allow construction n the road to continue.
However when the Senate voted on the Bridge, both Barack Obama and Joe Biden voted for the Bridge even when efforts were made to diver the funds from Alaska to Louisiana to replace a bridge damaged during Hurricane Katrina.
At the same time, while Biden has criticized Palin, according to report by CNN's Drew Griffin, this year alone Biden has requested $342 in earmarks including his own bridge to nowhere in Delaware, parks, museums and the kind of stuff Sarah Palin has been criticized for building. In 36 years Biden has never released his earmarks list but under pressure from Republicans his office has finally done so.