Table:
text: Conde McCullough
Bridges designed by McCullough
Bridges designed by McCullough
Bridge_name Location_ Year_completed Total_length Carries_
Crooked River High Bridge Jefferson County, Oregon 1926 464 feet U.S. Route 97
Big Creek Bridge Lane County, Oregon 1931 180 feet U.S. Route 101
Ten Mile Creek Bridge near Yachats, Oregon 1931 180 feet U.S. Route 101
Wilson River Bridge Tillamook County, Oregon 1931 180 feet U.S. Route 101
Rogue River Bridge Grants Pass, Oregon 1931 550 feet Redwood Highway
Cape Creek Bridge near Heceta Head 1932 619 feet (188.6 m) U.S. Route 101
Isaac Lee Patterson Bridge Gold Beach, Oregon 1932 1,898 feet (578.5 m) U.S. Route 101
John McLoughlin Bridge Oregon City, Oregon 1933 720 feet Oregon Route 99E
Umpqua River Bridge Reedsport, Oregon 1936 2,206 feet U.S. Route 101

Question: How many bridges were built under Conde McCullough in 1931?