Updated

A giant billboard over Interstate 44 will now help children mark the end of their chemotherapy treatment at St. Louis Children’s Hospital. The 12-foot metal bell was installed on Wednesday, and will be triggered to ring through an app used by hospital staff, St. Louis Post-Dispatch reported.

Bell-ringing is a ceremonious way patients mark the end of chemotherapy at hospitals across the nation. The bell over I-44 was installed with speakers so drivers can hear each time it rings.

FORMER RUNNER TAKES ON 5K 9 YEARS AFTER TRAGIC ACCIDENT

“Our kids are so excited when they get to ring that bell, they know what it means right from the start of their treatment,” Jenny Brandt, a certified child life specialist at St. Louis Children’s Hospital, told CBS St. Louis.

An estimated five to 10 children complete chemotherapy at St. Louis Children’s Hospital each month.