The Los Angeles County Metropolitan Transportation Authority (Metro) has approved a project to build a 31km light rail line that would serve poorer Latino communities in the southeast of the city.

The line has been under discussion for the past 20 years, and costed plans were announced in 2017. However, as the cost of the project has more than doubled to $8.5bn since then, Metro has decided to build it in two segments.

The first will be a 24km section running from Artesia to the Florence-Firestone area. This project, which has an estimated cost of $4.9bn, is expected to break ground next year and be completed around 2033.

The second phase, about half of which will be underground, will run underneath Little Tokyo. It was the tunnelling requirement that was the main factor in increasing costs for the project, and Metro may look for alternatives in the future. 

Metro plans to tap $3.1bn in federal investment and $850m in state funds for the first stage of the line.