The Seto Bridge

The Tenryu Hamanako Railway Seto Bridge (天竜浜名湖鉄道瀬戸橋梁) is a reinforced concrete railway bridge of 1938 on the Tenryu Hamanako Railway about 1.5 kilometres east of Kanasashi Station in Hamana Ward, Hamamatsu City, Shizuoka Prefecture, and was registered as a Registered Tangible Cultural Property (structure) on January 26, 2011 (Agency for Cultural Affairs).

The Agency records a three-span reinforced concrete girder bridge 39 metres long with its abutments and piers; registration number 22-0154.

An Ambitious Ministry of Railways Design

The Seto Bridge is a 39-metre, three-span continuous reinforced concrete girder bridge with a long central span of 23 metres (Agency for Cultural Affairs).

Its unusual design fixes the girder to the pier on the Kanasashi side while resting it on movable bearings on the other pier (Agency for Cultural Affairs).

Why It Was Registered

It was registered under the criterion of contributing to the historic landscape of the country (Agency for Cultural Affairs). The Agency notes that it records an ambitious experiment carried out directly by the Ministry of Railways.

What to Look For

Look for the continuous concrete girder with its 23-metre central span and the bearings fixed on one pier and movable on the other (Agency for Cultural Affairs).

Visiting

The bridge is in Nakagawa, Hosoe-cho, about 1.5 kilometres east of Kanasashi Station (Agency for Cultural Affairs), and is in daily railway use. Tickets, fares and the turntable tour are covered on the Tenryu Hamanako Railway page. Do not enter the tracks or railway land.

The Kita Ward of Hamamatsu named in the Agency's record became part of Hamana Ward when the city reorganised its wards on January 1, 2024; town names and lot numbers did not change (Hamamatsu City).

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Q&A

QWhen was the Tenryu Hamanako Railway Seto Bridge built?
AIn 1938 (Agency for Cultural Affairs).
QWhere is the Tenryu Hamanako Railway Seto Bridge?
AIn Nakagawa, Hosoe-cho, Hamana Ward, about 1.5 kilometres east of Kanasashi Station.
QWhat should I look for?
AA continuous concrete girder with a 23-metre central span.
QCan I visit the Tenryu Hamanako Railway Seto Bridge?
AIt is a working bridge; the nearest station is Kanasashi.
QWhen was the Tenryu Hamanako Railway Seto Bridge registered?
AOn January 26, 2011 (Agency for Cultural Affairs).

Basic Information

NameTenryu Hamanako Railway Seto Bridge (天竜浜名湖鉄道瀬戸橋梁)
LocationNakagawa, Hosoe-cho, Kita Ward, Hamamatsu City, Shizuoka Prefecture
DesignationRegistered Tangible Cultural Property (Structure)
Year DesignatedRegistered 2011/01/26 (Heisei 23)
Quantity1 structure
DimensionsThree-span reinforced concrete girder bridge, 39 m long, with abutments and piers
OwnerTenryu Hamanako Railway Co., Ltd.
Public AccessIn railway use (no access to the structure)

References

Tenryu Hamanako Railway Seto Bridge (Database of National Cultural Properties, Agency for Cultural Affairs)
https://kunishitei.bunka.go.jp/heritage/detail/101/00008470
Cultural Properties along the Line (Tenryu Hamanako Railway, Japanese)
https://www.tenhama.co.jp/spot/bunkazai/
Ward Reorganisation (Hamamatsu City, Japanese)
https://www.city.hamamatsu.shizuoka.jp/kikaku/kuseido/index.html

Last verified: 2026.10.14