Shea Co., Inc. is one of the largest privately held construction and real estate companies in the United States.

Shea Construction Inc., the Redding Division, Reed Manufacturing, Trilogy and Bluestar Resort & Golf.

[1][2] The JF Shea Company's projects include the building of the diversion channels for the Hoover Dam, the foundations for the Golden Gate and Oakland Bay bridges,[2] the tunnels for San Francisco's Bay Area Rapid Transit (BART) system[3] and tunnel work for The Metro Crenshaw/LAX Transit Corridor and the Metro Purple Line Extension.

J.F Shea constructed tunnels and stations for the San Francisco Bay Area Rapid Transit (BART) system.

In the 1970's, the company formed Shea Properties, which would oversee commercial development, including retail centers, apartments, office buildings and industrial parks.