Elon Musk Elaborates on His Plan for Tunnels Below Los Angeles

Considering it costs $1 billion per mile to dig L.A.'s subway tunnels, how does Elon Musk plan to build a series of car-carrying tunnels with out breaking the bank?

1 minute read

May 10, 2017, 11:00 AM PDT

By jwilliams @jwillia22


Tunnel

hxdyl / Shutterstock

Elon Musk is serious enough about his plan to build tunnels for cars below L.A. that he has at least given thought to the huge hurdles his plan will have to overcome—namely, the cost of engineering such an endeavor. Ruth Reader of Fast Company writes that the entrepreneur plans to dig the tunnels in a much more cost effective manner, "correcting inefficiencies" in the process.

(Musk) plans to make the diameter of the tunnels only 12 feet wide, much smaller than the typical 26-28 feet. He also says that a machine that tunnels and reinforces continuously will allow the burrowing process to go more quickly—especially if he were to increase the power of such a machine.

Elon Musk's discussion of the tunnel project and the Hyperloop transportation system from the TED2017 conference can be viewed online here.

Friday, April 28, 2017 in Fast Company

portrait of professional woman

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban Planner

Get top-rated, practical training

Red 1972 Ford Pinto with black racing stripes on display with man sitting in driver's seat.

Analysis: Cybertruck Fatality Rate Far Exceeds That of Ford Pinto

The Tesla Cybertruck was recalled seven times last year.

July 2, 2025 - Mother Jones

Close-up of park ranger in green jacket and khaki hat looking out at Bryce Canyon National Park red rock formations.

National Parks Layoffs Will Cause Communities to Lose Billions

Thousands of essential park workers were laid off this week, just before the busy spring break season.

February 18, 2025 - National Parks Traveler

Paved walking path next to canal in The Woodlands, Texas with office buildings in background.

Retro-silient?: America’s First “Eco-burb,” The Woodlands Turns 50

A master-planned community north of Houston offers lessons on green infrastructure and resilient design, but falls short of its founder’s lofty affordability and walkability goals.

February 19, 2025 - Greg Flisram

Screenshot of shade map of Buffalo, New York with legend.

Test News Post 1

This is a summary

0 seconds ago - 2TheAdvocate.com

Red 1972 Ford Pinto with black racing stripes on display with man sitting in driver's seat.

Analysis: Cybertruck Fatality Rate Far Exceeds That of Ford Pinto

The Tesla Cybertruck was recalled seven times last year.

18 minutes ago - Mother Jones

test alt text

Test News Headline 46

Test for the image on the front page.

March 5 - Cleantech blog