U-shaped abutment

U-shaped abutment

[′yü ¦shāpt ə′bət·mənt]
(civil engineering)
A bridge abutment with wings perpendicular to the face which act as counterforts; a very stable abutment, often used for architectural effect.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.