SEMA is a leading construction service provider to the railway industry in Canada and the United States. SEMA, through its operating companies – SEMA Railway Services, groupe SEMA, SEMA Railway Structures and AFM specialize in the design, fabrication, and installation of railway and transportation infrastructure.




Located at Sainte-Flavie, in the Bas-Saint-Laurent, Projexco-Sema specializes in bridges design and manufacture. The company distinguishes itself by its bridges renting service according to your needs.


The respect towards the client and the environment is a great strength of the company. The employee’s expertise which builds close to all the factory work allow best prices and shortest delivery time, classifying Projexco-Sema among the bests.


The company is everywhere in Quebec and its branch at Sept-Îles allows it to better serve Northern Quebec.