The Saskatchewan Roughriders have announced they are spending $14 million to upgrade Mosaic Stadium ahead of the 2013 Grey Cup in Regina.

Plans for the Grey Cup Legacy Project include turning the stadium into a bowl and boosting its seating capacity to 33,000.

The Saskatchewan government is providing the Roughriders with a $6.2-million loan for the project.

In addition to the 7,000 new temporary seats, corporate boxes will be added to the north and south endzones, along with concessions and washroom facilities.

The Riders are also adding a new 60-foot wide SaskTel Maxtron screen and are moving the scoreboard to the northeast endzone.

Another level of temporary bleacher seats will be added during the second phase, bringing the stadium's capacity to nearly 50,000 for the Grey Cup game.

The second tier of temporary seats will be removed after the game, maintaining the bowl-like atmosphere for up to 33,000 Rider fans.

"This is a very ambitious and much needed plan for Mosaic Stadium over the next few years," Riders chairman Roger Brandvold said in a release.

"Replacing Mosaic Stadium still remains our top priority, but certain upgrades needed to be made to get us through the next few years and especially the 2013 Grey Cup."

Construction of the new stadium is scheduled to begin in 2013, with completion in 2016.