An office tower by national commercial developer Ryan Companies will rise 41 floors -- 633 feet and 11 inches, to be exact -- at the southeast corner of West Fifth and Colorado Streets in downtown Austin, according to recent city permit filings and statements from the developers. Occupying nearly a quarter-block, the project contains 463,723 square feet of offices and 1,722 square feet of ground-floor retail space, along with pedestrian improvements and a sidewalk cafe area at its corner.
The address used for the development is 425 Colorado Street . . .