DENVER (CBS4) – Crews are almost done removing the sod at Sports Authority Field at Mile High.

The decision to redo the grass on the field the Denver Broncos play on came before the season started, and it’s about more than just the appearance, according to Denver Broncos facilities director Zach Myhra.

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“Our focus is what’s below the grass, the 12 or so inches below the field where the roots actually take hold, as well as a warming system, irrigation system and systems of that nature to support what you see on game days,” Myhra said.

(credit: CBS)

(credit: CBS)

It will take until April to get all of the renovations done before the new grass is laid out.

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The new sod will be 100 percent Kentucky bluegrass and is being grown by Graff’s Turf Farms in Fort Morgan.

An image of the work being done on Wednesday from Copter4 (credit: CBS)

An image of the work being done on Wednesday from Copter4 (credit: CBS)

There’s was no consideration to use any sort of artificial turf because the Broncos have always played on a natural surface.

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The Denver Outlaws will be the first to play on the new field during their home opener against the Charlotte Hounds on May 3.