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JSCE chooses 21 new entries to civil engineering heritage sites that embody "The beauty of engineering"

2023.11.10

The Japan Society of Civil Engineers (JSCE) (Shigeyoshi Tanaka, President) announced 21 'Civil Engineering Heritage Sites Selected and Endorsed by JSCE' for FY2023 on September 25. They selected and honored excellent civil engineering-related facilities from the viewpoints of engineering functions, social roles, and more. They also informed the public about the importance of such facilities, thus contributing to their preservation. Civil engineering-related facilities that had reached the fifty-year mark since their completion were selected.

The selected civil engineering-related facilities, their locations, and their completion years are as follows:

  1. (1)
    Tokachi River Tonai New Watercourse (Ikeda-cho - Toyokoro-cho, Makubetsu-cho - Toyokoro-cho, Nakagawa County, Hokkaido) completed in 1937
  2. (2)
    Moiwa-bashi Bridge (Toyokoro-cho, Nakagawa Country, Hokkaido) completed in 1961, a sidewalk built in 1970
  3. (3)
    Okura Dam (Aoba Ward, Sendai City, Miyagi Prefecture) completed in 1961
  4. (4)
    Oku Tadami Dam and Facilities related to Tadami-gawa River Dam (Hinoemata-mura, Aizu County, Fukushima Prefecture) completed in 1961; Otori Dam (Tadami-machi, Minami-Aizu County, Fukushima Prefecture) completed in 1963; Tagokura Dam (Tadami-machi, Minami-Aizu County, Fukushima Prefecture) completed in 1959; Taki Dam (Kaneyama-machi, Onuma County, Fukushima Prefecture) completed in 1961; Honna Dam (Kaneyama-machi, Onuma County, Fukushima Prefecture) completed in 1954; Uwada Dam (Kaneyama-machi, Onuma County, Fukushima Prefecture) completed in 1954; Miyashita Dam (Mishima-machi, Onuma County, Fukushima Prefecture) completed in 1946; Yanaizu Dam (Yanaizu-machi, Kawanuma County, Fukushima Prefecture) completed in 1953; and Katakado Dam (Aizubange-machi, Kawanuma County, Fukushima Prefecture) completed in 1953
  5. (5)
    Kuramae-bashi Bridge (Taito Ward - Sumida Ward, Tokyo) completed in 1927
  6. (6)
    Jogashima-ohashi Bridge (Miura City, Kanagawa Prefecture) completed in 1960
  7. (7)
    'Datum Point Stone Monument,' Aganogawa-Manganji Temple (Akiba Ward, Niigata City, Niigata Prefecture) completed in 1915
  8. (8)
    Oigawa Dam and Oigawa Powerhouse (Nakatsugawa City - Ena City, Gifu Prefecture) completed in 1924
  9. (9)
    Oigawa Main Line Northbound, Oigawa Bridge (Shimada City, Shizuoka Prefecture), completed in 1915
  10. (10)
    Fukara Irrigation Canal and Irrigation Tunnel (Susono City, Shizuoka Prefecture) completed in 1670
  11. (11)
    Ontanigawa Landslide Barrier (Ono City, Fukui Prefecture) completed in 1897
  12. (12)
    Kishu Railways and Part of the Discontinued Line of Former Gobo-Rinko Railways (Gobo City, Wakayama Prefecture) completed in 1931
  13. (13)
    Higashi-Takasu-bashi Bridge (Amagasaki City, Hyogo Prefecture) completed in 1931
  14. (14)
    Takasago Port - Mukojima Pier (Takasago City, Hyogo Prefecture) completed in 1810 and repaired in 1929
  15. (15)
    Kintetsu Namba Line - Large Section Shield Tunnel (Chuo Ward, Osaka City, Osaka Prefecture) completed in 1970
  16. (16)
    Kizugawa Bridge and Iwasaki Channel Bridge (Naniwa Ward - Nishi Ward, Osaka City, Osaka Prefecture) completed in 1928
  17. (17)
    Down Lane, Biwako-Ohashi Bridge (Otsu City - Moriyama City, Shiga Prefecture) completed in 1964
  18. (18)
    Uchio-ozuimon (grand water gate) (Minami Ward, Okayama City, Okayama Prefecture) completed around 1823
  19. (19)
    Sagawa-bashi Bridge (Shimanto-cho, Takaoka County, Kochi Prefecture) completed in 1939
  20. (20)
    Main Watercourse, Yokose Twin Water Gate Bridge (Oita City, Oita Prefecture), completed in 1900, with the part on the left side completed in 1904 and part on the right side completed in 1906
  21. (21)
    Reclamation Stone Facilities of Arasaki-Shinchi (Izumi City, Kagoshima Prefecture) completed in 1866

Jogashima-ohashi Bridge (6): The elegant looking bridge with a steel-floor box bridge girder that connects a tip of the Miura Peninsula and Jogashima Island. The bridge girders of this type have box hollow spaces in them. This form makes the bridges more resilient against torsional force. As a bridge across a marine route, this structure needs to be kept elevated as high as 21 meters from the sea level at high tide and should be as wide as 85 meters. Several structural challenges have been solved with tests such as those for stress measurement, providing a solid foundation to the engineering aspects of the bridge for the coming era.
Provided by the Japan Society of Civil Engineers
Fukara Irrigation Canal and Irrigation Tunnel (10): A tunnel going through mountains and spanning approximately 1,280 meters, making it the longest of this kind in Japan. This tunnel was dug unlined, starting with both ends of it, in the Edo Period for agricultural use, guiding the water route from Ashinoko Lake to the side of Shizuoka Prefecture. No structure such as an auxiliary tunnel was dug beside the main tunnel. The details of the technique were not recorded at the time as they were kept confidential. However, it is known that a vent-like tunnel was dug in the main tunnel for ventilation.
Provided by the Japan Society of Civil Engineers
Reclamation Stone Facilities of Arasaki-Shinchi (21): Important evidence of the civil engineering project embodied through the techniques exchanged between the Satsuma-han domain and the Higo-han domain based on a unique administrative system of Satsuma-han. One of the remains is the water gate (to stop sea water) made of stone with a technique unique to Satsuma-han.
Provided by the Japan Society of Civil Engineers

This article has been translated by JST with permission from The Science News Ltd. (https://sci-news.co.jp/). Unauthorized reproduction of the article and photographs is prohibited.

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