The new Champlain Bridge: Take a tour of the construction site

Construction crews have been working the new Champlain Bridge for about a year now, and the mild winter this year has allowed the 400 workers to stay on schedule.

"The biggest challenge of this project is the demanding timeline," said Daniel Genest, a spokesman forthe Signature on the Saint-Laurent Consortium.

The new bridge, which is expected to cost $4.23 billion andhave a lifespan of 125 years,is slated for completion byDec. 1, 2018.

• New Champlain Bridge receives 2nd concrete pouring for footing
• New Champlain Bridge could use ultra-high performance concrete

On Friday, members of the media were invited onto the site. CBC reporter Sean Henry went along for the tour.

To learn more, check out the video for Sean Henry's full report.