The Seven Bridges consist of Petang, Malitlit, San Isidro, San Cristobal, Majada, Canlubang, and Mayapa bridges. All are located along the stretch of the SLEX between Sta. Rosa Exit and the Calamba Interchange. Each bridge was rehabilitated and widened. Except Mayapa Bridge Southbound, all bridges were widened from two lanes to three lanes each bound. Mayapa Southbound was widened from three lanes to four lanes.