	st lawrence seaway opening still march the st lawrence seaway between lake ontario and montreal is still scheduled to open for the ping season on march a seaway official said the great lakes could have been open for traffic earlier this month due to the mild winter but scheduled repairs to the welland canal joining lake erie with lake ontario will keep that section closed until the april opening she said one lock system in the four lock soo canal joining lake superior with huron was opened on the morning of march but only three commercial vessels have been locked through so far according to an u s army corps of engineers official the soo canal is currently only open for daylight vessel movement with hour movement allowed beginning march she added reuter 
