History

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First to Bring Asphalt Emulsion to Japan

Taiheiyo Boeki corporation, the forerunner of Toa Road Corporation, was the first company to introduce asphalt emulsion in Japan.
The low cost pavement using asphalt emulsion quickly gained favor and facilitated the early recovery from the devastating 1923 Great Kanto Earthquake.

Launched in 1930 for Emulsion Production and Sales

Founded as a joint venture with a U.S. company in 1930, we have started manufacturing and selling asphalt emulsion. With rising demand of paved road, we have expanded into road construction business.

Transportation Infrastructure in Japan

Riding a wave of economic boom through the years in Japan, we have expanded road construction and public works business. The roads and expressways we've built across Japan are a vital part of the country's transportation infrastructure.

Multi-Function, High-Performance and Eco-Friendly

The Requirements for road function is changing to "Multi-Function", "High-Performance" and "Eco-Friendly" from before "Convenience only", and the Requirements for maintenance and inspections also become increasing.
Constructions and Products should follow this Background.


  • Bitumen Treated Road

  • ASO Mountain Road in 1956

  • Tokyo International Airport “HANEDA”
    in 1959

  • Meishin Expressway in 1963

  • Tohoku Expressway in 1973

  • Kyushu Expressway in 1973

  • Chugoku Expressway in 1981

  • Nakayama Racecourse

  • Port of Nagoya Toyota export base

  • Yokohama Bashamichi mall

  • Metropolitan Expressway,
    Yokohama Bay Bridge in 1989

  • Osaka International Garden
    and Greenery Exposition in 1990

  • Developed "Permi-binder"
    for porous asphalt pavement in 1990

  • Chuo Expressway in 2000

  • Earthquake disaster restoration
    work in 2011

  • East Kyushu Expressway in 2013
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