A grate souvenir: Pieces of the Mackinac Bridge go on sale

Pieces of an iconic Michigan landmark are up for sale by the Mackinac Bridge Authority. Small grating pieces from the Mighty Mac are available for $20 a piece, limited to three per customer. Sales are in-person only at the office next to the bridge toll booths.

Pieces are around 5 inches by 11 inches or 5 inches by 8 inches. The Mackinac Bridge Authority warns of rust and traces of lead paint, so all pieces are sold "as is" and customers must sign a liability disclaimer.

The bridge authority previously sold grate pieces last October.

More: Mackinac Bridge to welcome Labor Day crowds for 64th annual walk

More: Girl, 14, will navigate 36-foot boat alone for hours during the Mackinac race

First opened to traffic on Nov. 1, 1957, the bridge connects Mackinaw City in Michigan's Lower Peninsula to St. Ignace in the U.P.

In June, a Tawas City family drove across bridge — the 200 millionth vehicle since the bridge's opening, according to a Mackinac Bridge Authority (MBA) news release.

This article originally appeared on Detroit Free Press: Mackinac Bridge grate pieces up for sale by bridge authority