(Photo courtesy of Arizona Department of Transportation)

Interstate 10 Deck Park Tunnel in Phoenix.

PHOENIX — A freeway tunnel in the center of downtown Phoenix will finally undergo much needed repairs next month.

KTAR-FM reported the Arizona Department of Transportation plans to start major renovations of the Interstate 10 Deck Park Tunnel on June 1.

ADOT officials said water has been draining improperly from Margaret T. Hance Park, which is located above the tunnel.

ADOT spokesman Doug Nintzel said water at times has leaked into vehicles traveling through the tunnel.

Nintzel said it will take about two months for crews to dig trenches and redirecting pipelines.

This summer marks the 25th anniversary of the tunnel's construction.

It opened Aug. 10, 1990.