{"id":5091,"date":"2025-04-09T13:28:05","date_gmt":"2025-04-09T11:28:05","guid":{"rendered":"https:\/\/www.bessac.com\/?page_id=5091"},"modified":"2026-02-18T16:38:01","modified_gmt":"2026-02-18T15:38:01","slug":"history","status":"publish","type":"page","link":"https:\/\/www.bessac.com\/en\/about-us\/history\/","title":{"rendered":"History"},"content":{"rendered":"

Who<\/span> are we?<\/h2><\/div>

<\/div>Bessac was built upon its dual expertise as both a <\/span>public works contractor<\/strong> and a <\/span>manufacturer of TBMs<\/strong>.<\/span> <\/p>\n<\/div>
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For over 50 years, we’ve gained <\/span>unparalleled experience<\/strong> in both <\/span>tunnel and microtunnel construction<\/strong>, as well as the <\/span>design and manufacturing <\/strong>specialized equipment for underground works.<\/b><\/span><\/p>\n<\/div>

<\/div><\/div><\/div>

In this section<\/b><\/span><\/p>\n<\/div>

. <\/b><\/span>BESSAC’s Strengths<\/b><\/span><\/a>
\n . <\/b><\/span><\/a>Our history<\/a><\/b><\/span><\/p>\n<\/div>

<\/div><\/div><\/div><\/div><\/div>

BESSAC’s Strengths<\/b><\/h2><\/div><\/div><\/div>
<\/span><\/div>
Highly specialized teams, able to mobilize and respond quickly<\/h5><\/div><\/div><\/div>
<\/span><\/div>
A fleet of more than 40 TBMs and MicroTBMs<\/h5><\/div><\/div><\/div>
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Strong capacity for innovation<\/h5><\/div><\/div><\/div><\/div><\/div><\/div>

Our history<\/span><\/span><\/h2><\/div><\/div><\/div><\/div><\/div>

2025<\/span><\/strong><\/h3><\/div><\/div><\/div>
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France\u2019s longest microtunnel record at 1,355 m for the France\/Spain Electrical Interconnection<\/h5><\/div>
<\/span><\/div><\/div><\/div><\/div><\/div>

2023<\/span><\/span><\/strong><\/h3><\/div><\/div><\/div>
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World first: Very low-carbon metakaolin concrete tunnel for Toulouse Metro Line B Connection<\/h5><\/div>
<\/span><\/div><\/div><\/div><\/div><\/div>

20<\/span>21<\/strong><\/h3><\/div><\/div><\/div>
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World first: Ultra-low carbon concrete microtunnel for the Bonneuil-en-France wastewater treatment plant discharge<\/h5><\/div>
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2019<\/span><\/span><\/strong><\/h3><\/div><\/div><\/div>
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France’s record for the largest pipe jacking, with an internal diameter of 3.5m, for a water transfer gallery at the Clichy wastewater treatment plant<\/h5><\/div>
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2018<\/span><\/strong><\/h3><\/div><\/div><\/div>
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Construction of our new headquarters<\/h5><\/div>
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20<\/span>17<\/strong><\/h3><\/div><\/div><\/div>
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French record for the tightest curve (R=110m) achieved with a microtunnelling machine for the Livry-Gargan wastewater collector<\/h5><\/div>
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2015<\/span><\/strong><\/h3><\/div><\/div><\/div>
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World first: Implementation of a hydrid tunnel boring machine allowing a switch from pipe jacking to segment lining for the Miami Norris Cut wastewater collector<\/h5><\/div>
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20<\/span>13<\/strong><\/h3><\/div><\/div><\/div>
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Winner of the International Tunneling Award with TDM (Tunnel Dismantling Machine), Hong Kong<\/div><\/h5><\/div>
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20<\/span>09<\/strong><\/h3><\/div><\/div><\/div>
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Triple certification in Quality, Safety, and Environment, and creation of BESSAC ANDINA in Colombia<\/h5><\/div>
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20<\/span>04<\/strong><\/h3><\/div><\/div><\/div>
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Concept and manufacture of the first BESSAC EPB TBM for the VL10 Wastewater collector near Paris in France<\/h5><\/div>
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20<\/span>01<\/strong><\/h3><\/div><\/div><\/div>
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First subway project for BESSAC, Lot 3, Line B in Toulouse<\/h5><\/div>
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19<\/span>95<\/strong><\/h3><\/div><\/div><\/div>
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First international project, BEWAG Utility Tunnel, in Berlin, Germany<\/h5><\/div>
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19<\/span>90<\/strong><\/h3><\/div><\/div><\/div>
<\/div><\/div><\/div>
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SOLETANCHE acquires BESSAC<\/h5><\/div>
<\/span><\/div><\/div><\/div><\/div><\/div>

19<\/span>85<\/strong><\/h3><\/div><\/div><\/div>
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Concept and manufacture of the first BESSAC compressed-air TBM for Caud\u00e9ran-Naujac stromwater collector near Bordeaux<\/h5><\/div>
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19<\/span>76<\/strong><\/h3><\/div><\/div><\/div>
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Concept and manufacture of the first BESSAC non-mechanized TBM for a pedestrian underpass gallery in Toulouse<\/h5><\/div>
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19<\/span>75<\/strong><\/h3><\/div><\/div><\/div>
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Creation of the company BESSAC Jacking & Drilling by Michel BESSAC<\/h5><\/div><\/div><\/div><\/div><\/div>

Read <\/span>also<\/span><\/div><\/h2><\/div><\/div><\/div><\/div><\/div>
<\/a><\/span><\/div>
<\/div>
<\/div>

Underground
\nworks<\/h2>\n<\/div><\/div><\/div>\n
<\/a><\/span><\/div>
<\/div>
<\/div>

Industrial
\n<\/span>Division<\/span><\/a><\/h2>\n<\/div><\/div><\/div>\n
<\/a><\/span><\/div>
<\/div>

Training<\/a>
\nCenter<\/h2>\n<\/div><\/div><\/div>\n<\/div><\/div>
<\/div><\/div>
<\/div><\/div><\/div>
<\/span><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div>

More information<\/span>?<\/span><\/p>\n

\n<\/div>

<\/i>Contact us<\/span><\/a><\/div><\/div><\/div>
<\/div><\/div><\/div>
<\/div><\/div>
<\/div><\/div><\/div><\/div><\/div>
<\/div>
<\/div>

More information?<\/span><\/p>\n

 <\/p>\n<\/div>

<\/i>Contact us<\/span><\/a><\/div><\/div><\/div>
<\/div><\/div><\/div>
<\/span><\/div><\/div><\/div><\/div>
<\/div><\/div><\/div><\/div><\/div>\n
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