This photo depicts a memorial "ghost bike" set up in Houston. What is believed to be the first such memorial in Maine is being installed in Poland by the parents of a boy killed there by a drunk driver 20 years ago. Credit: Carlos Martinez | Flickr

POLAND, Maine — A Maine couple is installing a “ghost bike” memorial at the site where their son was killed by a drunken driver 20 years ago.

Bob Barton says he learned about ghost bike memorials online, and says he thinks this will be the first monument of its kind in the state of Maine. The Sun Journal reports Bob and Suzanne Barton will place the memorial and a plaque next week to commemorate the 20th anniversary of 16-year-old Ethan Barton’s death.

The Barton couple will place the white-painted bike at the site where Ethan was killed in Poland.

In 1998, Ethan was struck and killed by Gale Chapman, whose blood alcohol level was measured at three times the legal limit. Chapman served 18 months in prison and died in 2015.

According to ghostbikes.org, there are more than 630 such memorials set up in more than 210 locations around the world.

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Featured image by Carlos Martinez used under Creative Commons license 2.0.