Where the Subway Comes Up at Yotsuya
The Yotsuya Overpass on the Tokyo Metro Marunouchi Line (東京地下鉄丸ノ内線四ツ谷跨線橋) is a subway overpass of 1959 in Kojimachi, Chiyoda Ward, to Yotsuya, Shinjuku Ward, Tokyo, and was registered as a Registered Tangible Cultural Property (structure) on March 6, 2024 (Agency for Cultural Affairs).
The Agency records a four-span steel girder bridge 110 metres long, with its piers; registration number 13-0492.
A Gerber Bridge Crossing the JR Lines at an Angle
The Yotsuya Overpass crosses the JR Chuo Line and other tracks at an angle of 30 degrees and carries the Marunouchi Line, on a curve of 500-metre radius, and Yotsuya Station (Agency for Cultural Affairs).
It is a Gerber bridge that skilfully combines steel-deck girders, rigid frames and plate girders; its unusual structure keeps clear sightlines along the JR lines and the space beneath the girders (Agency for Cultural Affairs).
Why It Was Registered
The Agency registered it for its contribution to the historic landscape, a bridge of simple appearance that respects the historic setting of the outer moat of Edo Castle.
What to Look For
Look for the girders crossing the JR lines at an angle and the plain form chosen to suit the outer moat (Agency for Cultural Affairs).
Visiting
It is owned by Tokyo Metro and carries the Marunouchi Line (Agency for Cultural Affairs). The bridge can be seen from around Yotsuya Station.
Q&A
- When was the Yotsuya Overpass built?
- In 1959 (Agency for Cultural Affairs).
- What does the Yotsuya Overpass cross?
- The JR Chuo Line and other tracks, at 30 degrees.
- What is its structure?
- A Gerber bridge combining several girder types and rigid frames.
- How long is the Yotsuya Overpass?
- 110 metres (Agency for Cultural Affairs).
- When was the Yotsuya Overpass on the Tokyo Metro Marunouchi Line registered?
- On March 6, 2024 (Agency for Cultural Affairs).
Basic Information
| Name | Yotsuya Overpass on the Tokyo Metro Marunouchi Line (東京地下鉄丸ノ内線四ツ谷跨線橋) |
|---|---|
| Location | Kojimachi 6-chome (off 5), Chiyoda Ward, to Yotsuya 1-chome (off 25), Shinjuku Ward, Tokyo |
| Designation | Registered Tangible Cultural Property (Structure) |
| Year Designated | Registered 2024/03/06 (Reiwa 6) |
| Quantity | 1 building |
| Dimensions | 4-span steel girder bridge, 110 m long, with piers |
| Owner | Tokyo Metro Co., Ltd. |
| Public Access | Active Marunouchi Line track (seen from around Yotsuya Station) |
References
- Yotsuya Overpass on the Tokyo Metro Marunouchi Line (Database of National Cultural Properties, Agency for Cultural Affairs)
- https://kunishitei.bunka.go.jp/heritage/detail/101/00014747
Last verified: 2026.10.16