McCarthy Bridge is a 16′ x 98′ acrylic painting done in situ at Chevron Technology Center at Richmond, CA over a ten month period from October 2013 to August 2014 (time off from December to April). The work is a history and future of transportation.
I myself consider these on-site paintings an extended performance, with a beginning middle and end, costume changes, props and a fourth wall. Starting with a gridded design script, the artwork is scaled, drawn and painted in front of a changing (generally appreciative) audience. In this case, the requirements included mandatory 6 a.m. safety meetings, hard hats, boots, vest and harness, lift certification, and lots of sunblock.