Caltrans reported one other new mural was stolen over the weekend.
The murals are scale replicas of artwork that used to be displayed on the 101 Freeway.
The murals were created on recycled plastic and vinyl plastic surfaces that are graffiti-resistant. The murals were designed to be mounted or removed for cleaning as necessary without affecting traffic. The surface reportedly is resistant to most types of spray-paint.
The murals will be displayed for 90 days.
The three graffiti vandal-resistant mural replicas unveiled Monday include George Sportelli's "Tony Curtis" and John Wehrle's "Galileo, Jupiter and Apollo" along the Hollywood Freeway (US 101) between Grand Avenue and Alameda Street, according to Caltrans.
Two pieces, Ruben Soto's "I Know Who I Am" and Frank Romero's "Going to the Olympics," were stolen over the weekend, Caltrans said in a statement.
The Mobile Mural Demonstration Project is a collaboration between the Caltrans Transportation Art Program, the L.A. Conservation Corps, the artists, the L.A. County Metropolitan Transportation Authority (Metro) and the Wells Fargo Foundation.