San Francisco is reaching new heights as a spate of modern towers rise in the city's downtown core. While the Salesforce Tower is well on its way to becoming San Francisco's tallest building, the steel frame of 181 Fremont is climbing steadily just across the street. When complete, 181 Fremont will consist of 54 floors and stand over 800 feet tall, just 50 feet shy of the city's current tallest, the Transamerica Pyramid. 

181 Fremont in San Francisco, image courtesy of Jay Paul Company

The building will contain 432,000 square feet of Class A+ office space combined with 67 luxury condominium units on the upper 17 floors, reaching to the 700-foot mark. The mechanical section and a spire will bring the tower over 800 feet. Residential amenities and a two-storey sky terrace are planned for the 36th floor. The rooftop park on the Transbay Transit Center will be directly connected to 181 Fremont. The arrangement can be seen below in the Transbay Transit Center webcam, with 181 Fremont pictured at the top left of the image. 

181 Fremont rising at the top left, image courtesy of Transbay Transit Center webcam

Designed by Heller Manus Architects, the unique exoskeleton structure of the tower eliminates the need for interior columns and maximizes space. 181 Fremont is targeting LEED Platinum certification by implementing a variety of water and energy efficient systems. A curtain wall allows light to pour in and gives occupants a dramatic view of the area. 

An office floor, image courtesy of Jay Paul Company

In recent photos from the site by Flickr user viewguysf below, the intimidating steel frame of the structure is seen rising.

181 Fremont construction, image courtesy of Flickr user viewguysf

The tower was initially developed by SKS Investments, who applied in 2007 for a 66-storey, 900-foot tower with over double the number of residential units currently being built. When the Transbay Center District Plan was approved in 2012, the height was reduced to the site's outlined 700-foot limit. Jay Paul Company acquired the project in 2013 and began construction on the $500-million development. 

The roof and spire of 181 Fremont, image courtesy of Jay Paul Company

181 Fremont will be an exciting tower to watch grow, and we'll keep you updated on the progress. For more information and images, check out the dataBase file linked below. Want to get involved in the discussion? Check out the associated Forum thread or leave a comment at the bottom of this page.