Text #1971000

The keystone in an arch bridge is the wedge-shaped center piece that is put in position at the very end of constructing the arch which causes the other pieces to stay in place.

—from Bridges: A History of the World's Most Famous and Important Spans, a book by Judith Dupre

Active since December 17, 2012.
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Universe Races Average WPM First Race
Ygnacio Valley Christian School 24 42.27 December 6, 2016
Walsh Middle School 12 41.62 September 9, 2011
Crow Middle High School 1 29.12 September 13, 2016
Mrs. Wunschel's TypeRacer Universe 1 63.41 December 17, 2012
Default (English) 0 0.00 January 1, 1970