Thanks to voter support of the Los Angeles County Traffic Improvement Plan presented to voters as Ballot Measure M in November 2016, Metro allocated $6 billion for this project. Funding for this project that has been programmed in two cycles (per the plan's funding schedule):
- Cycle 1 allocates $3 billion in 2029 (one alignment)
- Cycle 2 allocates $3 billion in 2053 (second alignment)
The project is also identified as high priority for potential acceleration. If funding can be secured prior to the anticipated 2029 funding cycle, the goal would be to build it in time for the 2028 Summer Olympic and Paralympic Games.