SINGAPORE, Dec 3 (Reuters) - The dollar rose on Wednesday to its highest in more than 5-1/2 years against a basket of currencies, helped by this week's rise in U.S. bond yields and Federal Reserve officials' mostly upbeat comments on the outlook for the U.S. economy.

The dollar index touched a peak of 88.709, its loftiest level since March 2009. It was last steady on the day at 88.667.

(Reporting by Masayuki Kitano; Editing by Clarence Fernandez)