. >> carolyn tileler live now where commuters are paying the bulk of the project. carolyn?> price tag we keep hearing about is $6.4 billinin but wait there is more, much more adding in finance charges. >> the new bridge is spectacular, but beauty come was a price. >> $6.4 billion. >> and. >> it's nearly three times what they thought would it cost when construction began on the bridge. but political bickering dragged the process along. uc berkeley professor has made a career out of researching the bay bridge which she calls a megaproject. captivating and costly. >> time is money. over that time, steel prices increased. construction costs in general across the industry. with september 11th insurance and bonding costs went up. >> i think it's worth money but not that much money. >> commuters are paying the lion's share of the project according to the transportation commission about 69% coming from tolls. $6.4 billion is staggering final final is likely to be nearly twice as high. $12 bimin by the time bonds are paid off in 2054. >> just >> but the spokesman says increases are