Developers say they'll break ground this fall on a 43-story office tower in downtown Seattle.

The Seattle Times reports ( http://bit.ly/UkZYkc) the 660-foot Fifth and Columbia Tower would be the fourth-tallest skyscraper in the city and the tallest building erected in more than 20 years in Seattle.

Daniels Development and Stockbridge Capital Partners of San Francisco obtained permits for the tower in 2008, but put the project on hold in the recession.