Bridging to the Future.


Through the work of design, fabrication,
erection and maintenance are conducted solely by our company.

Since founded in 1949, 『YADA』 has been constructing a various type of bridges such as a bridge crossing over a valley or a river and an overpass bridge crossing over a road or railroad in all of Japan.

『YADA』is working on all scope of design, fabrication, erection and maintenance. What made it possible is three integrated powers (Design Power, Fabrication Power, Site Erection Power) that are preeminent in this field in Japan.


Registered Company Name
1 Akougi, Oniuta, Nishitamachi, Koriyama city, Fukushima Prefecture, 963-0921
January 1949
80,720,000 JPY
Number of Employees
132(as of March.-2020)
Scope of Business
Investigation, Design, Fabrication, Site Erection work of Steel Bridges, Water Gates, Aqueduct Bridges, Pylons and Steel Structures.
Other supplementary work and Maintenance/Repair work
Daily life grocery shop 『Pont Neuf』
Renewable energy business
Permitted Construction Work
Ministry of Japan MITL Permission (No. 2714, Category 3-Special)
Steel structure construction work, Civil work, Construction work, Tobi civil work, Painting work,Water supply facility construction work

Ministry of Japan MITL Permission (No. 2714, Category 3-General)
Machinery Equipment Installation Work
ISO Accreditation

ISO 9001:2015 / JIS Q 9001:2015
Registered No.:MSA-QS-4688

ISO 14001:2015 / JIS Q 14001:2015
Registered No.:MSA-ES-1771




HQ・Fabrication Plant

1 Akougi, Into, Nishitamachi, Koriyama city, Fukushima Prefecture, 963-0921

Phone: +81-(0)24-972-2811 (switchboard)
Fax: +81-(0)24-972-2884


  • Tokyo Branch Office

    1-13-8 Kanda Jimbocho, Chiyoda-ku, Tokyo, 101-0051

    Phone: +81-(0)3-5283-6570
    Fax: +81-(0)3-5283-6571

  • Osaka Branch Office

    1-21-16 Tenman, Kita-ku, Osaka, Osaka Prefecture, 532-0043

    Phone: +81-(0)6-6809-2884
    Fax: +81-(0)6-6809-2894

  • Sendai Branch Office

    10-12 Kasugamachi, Aoba-ku, Sendai, Miyagi Prefecture, 980-0821

    Phone: +81-(0)22-223-0514
    Fax: +81-(0)22-223-0515

  • Yamagata Offices

    2-8-5 Aota, Yamagata, Yamagata Prefecture, 990-2435

    Phone: +81-(0)252-82-5505
    Fax: +81-(0)23-679-4021

  • Niigata Sales Office

    2-2-58 Tokorojima, Konan-ku, Niigata City, Niigata Prefecture, 950-0135

    Phone: +81-(0)25-282-5505
    Fax: +81-(0)25-282-5506

  • Yamanashi Offices

    4-1-1 Asahi, Kofu, Yamanashi Prefecture, 400-0025

    Phone: +81-(0)22-223-0514
    Fax: +81-(0)22-223-0515

  • Shizuoka Sales Office

    14-4 Saiwai-cho, Aoi-ku, Shizuoka, Shizuoka Prefecture, 420-0067

    Phone: +81-(0)54-205-8200
    Fax: +81-(0)54-205-8201

  • Nagoya Sales Office

    1-22 Sawashita-cho, Atsuta-ku, Nagoya City, Aichi Prefecture, 456-0006

    Phone: +81-(0)52-881-1184
    Fax: +81-(0)52-881-1185

  • Hiroshima Sales Office

    1-13-10 Higashino, Asaminami-ku, Hiroshima, Hiroshima Prefecture, 731-0111

    Phone: +81-(0)54-205-8200
    Fax: +81-(0)54-205-8201

  • Kyushu Sales Office

    1-30 Hiemachi, Hakata-ku, Fukuoka, Fukuoka Prefecture #206 Sun Izumi Building, 456-0006

    Phone: +81-(0)92-481-2876
    Fax: +81-(0)92-481-2892


Life miscellaneous goods store Pont Neuf

5-17 Nakamachi, Koriyama City, Fukushima Prefecture, 963-8004

Phone: +81-(0)24-973-7863
Fax: +81-(0)24-953-8890




Lot CN 01, Southern of Zone A, Bim Son Industrial Zone, Bim Son Town, Thanh Hoa province

Hanoi office

8F, HL Building, Lane 82, Duy Tan Street, Cau Giay District, Hanoi

Phone: +84-(0)24-3200-8797


Design Power to make a proposal.

By considering all aspects of cost, fabrication and site erection work, the value of bridge will be maximized.

Fabrication drawing for client approval shall be released after verifying design documents that no consistency among its linear line calculation , stress calculation, quantity calculation and design drawings by investigating all aspects of design parameters, erection site condition, fabrication parameters at plant, installation method etc. However, this verification is not a simple procedural work at 『YADA』. we will propose a valuable idea generated by our design power even during verification process.


Fabrication Power to manufacture.

By the large scale fabrication plant, by the latest machines/facilities and by our superior people, we will make the best one.

『YADA』 owns one of the foremost large scale plant in Japan. Fabrication Power which enables one large block erection method brings a significant advantage in terms of value engineering of bridge. At the fabrication plant, cutting, drilling, assembly/welding, pre-trial assembly and painting work are proceeded with utilizing newest machines/facilities under the precise production control and thoroughly quality control system.

HQ Fabrication Plant Total area: 60,000 ㎡


High performance machines/facilities producing high quality products at plant. Some of them are introduced below.

  • Laser cutting machine

  • Plasma cutting machine

  • Ultra hard 1 axis gantry machine

  • Automatic 6 poles panel welding machine


Site Construction Power to erect.

Raising a slogan of “secure the safety” and “keep the schedule”, the construction work is carried considering the environmental impact and landscape scenery.

Every time when we build a bridge which is composed with optimized material/type/erection method in terms of topography/geology as well as erection schedule and budget is a new challenge. This requires a flexible and tough Site Construction Power. It also requires the consideration on landscape scenery and minimizing environment impact. 『YADA』will proceed the site ercction work with safely/certainly to satisfy all aspects by utilizing the company owned machines/material, engineers/workers who are sufficiently experienced of the site work.


Scrupulous maintenance will be continued after completion of erection work.

Bridge must be all the safety more than anything. 『YADA』will conduct a site investigation, repair/reinforcement work, seimistic reinforcement work and dismantling work for a bridge and watergate etc. by utilizing the cultivated expertises.


bridges of meter total length constructed in all of Japan.

Since founded in 1949, 『YADA』 have been always keeping to introduce or develop the updated technology in the field of steel structure of a bridge, water gate, aqueduct bridge etc. And 2,435 bridges of 81,228.27 meter total length have been constructed (as of the end of October2019). From next page, some of these activities are introduced.

  • Ichiganari Bridge <Hyogo pref.>

  • Kumanomae Pedestrian Bridge <Tokyo>

  • Nippori Toneri Liner Overbridge <Tokyo>/New traffic system

  • Agagawa Shinkyoryo <Fukushima pref.>

  • Shiokaze Bridge <Tokyo>