What is the deepest public transport system in the world?

deepest public transport system in the world: 116m

Exploring the deepest public transport system in the world reveals incredible engineering feats beneath our cities. Commuters navigate profound depths to access underground transit networks daily. Understanding these subterranean structures highlights human ingenuity and urban development trends globally. Discover the location holding the ultimate record for depth.

What is the Deepest Public Transport System in the World?

When talking about deep transit, the world record belongs to Hongyancun Station on Line 9 of the Chongqing Rail Transit in China. Sitting at a staggering 116 meters below ground,^[1] it currently stands as the deepest metro station in the world. It is an engineering marvel tucked into the hilly landscape of Chongqing, surpassing previous records in Kyiv and Pyongyang.

Hongyancun Station: Engineering at 116 Meters

To put 116 meters into perspective, think of a 39-story building buried entirely underground. This station serves as a critical interchange, managing the unique verticality of Chongqing, where traditional transit alignments struggle against massive river valleys and mountainous terrain. The stations construction was not just a feat of digging; it was a response to the citys extreme topography that forced transit engineers to go deepest underground train station depths than ever before.

Why Depth Was the Only Option

Chongqing is often called the 8D City because of its multi-layered structure. Mountains and rivers act as natural barriers that make surface-level or shallow transit difficult.

By diving 116 meters deep, engineers avoided the surface chaos while connecting neighborhoods separated by cliffs and steep valleys. It wasnt about seeking a record - it was about survival of the infrastructure. But here is the catch - the engineering required to stabilize such deep tunnels is immense. The pressure from the surrounding rock and soil at that depth is significant, requiring advanced hydro-isolation and structural reinforcement that isnt needed for stations just 10 meters down.

How Hongyancun Compares to Other Deep Stations

The competition for the title has historically been intense, with stations in post-Soviet cities holding the record for decades. Below is how the top contenders stack up regarding the Chongqing deepest metro station and others.

Comparison of the World's Deepest Metro Stations

While Hongyancun currently holds the top spot, other stations remain famous for their extreme depth and historical significance.

Hongyancun Station (Chongqing)

1. 116 meters below ground
2. Modern 8D city topography integration
3. Over 141 meters between entrances

Arsenalna Station (Kyiv)

1. Approximately 105.5 meters
2. Architectural monument of local significance
3. Requires long, steep escalator rides

Pyongyang Metro Stations

1. Tracks at over 110 meters
2. Doubles as a strategic bomb shelter
3. Maintains constant 18 degrees Celsius

The Commuter Experience: A Daily Descent in Chongqing

Minh, a 28-year-old IT worker in Chongqing, uses the Hongyancun station every weekday. The first time he visited, he expected a quick trip to the platform, but the reality was quite different from his previous city commute.

He arrived at Entrance 2, thinking he could just hop on a train. Instead, he realized he had to navigate a three-segment ascending moving walkway that felt like it took forever. His feet were tired before the day even began.

After a few weeks, he learned the rhythm. He stopped rushing and started using the time to listen to podcasts, accepting that the descent was just part of his morning routine rather than a hurdle.

Now, he manages the trip in about 6 minutes, barely noticing the depth. It is just his normal, albeit very deep, morning commute.