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.
VIA RAIL – Chatham Sub Bridge
In 2008 VIA Rail Canada publically tendered the job to repair four (4) of its bridges on the Chatham subdivision near Windsor Ontario. The bulk of the work was steel repairs, however there was also concrete repairs and bearing replacements to be done.
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Ontario Northland Railway
Moose River Rehabilitation
The Moose River bridge is situated along the Ontario Northland Railway corridor between Cochrane and Moosonee where the ONR provides the only means of ground transport to Moosonee and Moose Factory from Highway 11. (The bridges is 45 miles south of Moosonee Ontario.)
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Ontario Northland Railway
Marten Creek Bridge Replacement
The Marten Creek bridge is situated along the Ontario Northland Railway corridor between North Bay and Temagami Ontario. The original bridge is a single span HTPG (Half Through Plate Girder) constructed in 1910 which was found to be in very poor condition due to cracking of the steel superstructure. 
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CN - Québec Bridge Steel Repair
The Quebec Bridge is a road/rail key link between the south and  north shore of the St. Lawrence River. Built in 1917, it is still to this day the longest cantilever style bridge in the world. The bridge requires constant maintenance due to the use of salt on the public section of the bridge.
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