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5 Different Types of Tunnel...

Tunnel Boring Machines aren’t all the same, they have different designs meant to meet specific needs depending on the type of tunneling being done. Though we often refer to TBM’s as one size fits all,...

Tunnel Insider’s top 5 movies...

Though Tunnel Insider has mostly featured stories that focus on tunnels that are used for transportation, today we wanted to take a new approach and showcase other cool tunnel related stuff, such as our 5...

John had 2 quarters, 4...

John went to the hardware store to buy a strip of LEDs to light-up a small tunneling project he’s working on. He had 2 quarters, 4 dimes, 3 nickels and 2 pennies. The total cost of the...

How Does a Tunnel Boring...

It's widely known that the construction of tunnels is complex. Though tunnels are becoming more common in transportation, most of us undermine the engineering behind them and difficulty of planning and digging them. Thanks to...

A Tunnel Boring Machine and...

A Tunnel Boring Machine (TBM) and a crane together cost $1,100,000. The TBM costs $1,000,000 more than the crane. How much does the crane cost? Many people respond by saying that the crane must cost $100,000. Is this...

Are Tunnels the Future of...

Lately, more and more news outlets and websites have been covering stories about how tunnels could play a significant role in the future of public transportation, and possibly solving the gridlock traffic, especially in spread...

The covert history of the...

Downtown Los Angeles is well known for landmarks such as the Walt Disney Concert Hall, the Bradbury building, the Staples Center and the Dodger Stadium, but few know about the rich history of the tunnels...