Conversation so far:
who was the original designer of the golden gate bridge
Joseph Strauss submitted his sketches for a cantilever suspension hybrid span for the Golden Gate Bridge in June 1921
How long did it take for the Golden Gate Bridge to get built
Construction for the Golden Gate Bridge began on January 5, 1933. The project was finished and opened May 27, 1937

Question: How much did the bridge cost
Self-contained rewrite: How much did the Golden Gate Bridge cost