Project Profile: Westside Purple Line Extension, Section 1. Westside Purple Line Extension, Section 1. The new line will ultimately add seven stations upon the completion of all three sections of the project using the design-build delivery method: Section 1 is a 3.9-mile long segment along the Miracle Mile to Wilshire and La Cienega Boulevards (including three stations), Section 2 is 2.6 miles from La Cienega to Century City (including two stations), and Section 3 is a 2.9-mile section through