The change in quantity supplied of red wine is a result of a change in market price. Moving from point A to B or C is a movement along the supply curve. The actual supply curve did not change shape, only the market price for red wine changed and thus the quantity supplied by the producers changed.
The dream of spanning the Golden Gate Strait had been around for well over a century before the Golden Gate Bridge opened to traffic on May 28, 1937. Pedestrian Day was held on May 27, 1937. We do not have the exact employment figures. The Bridge was built by 10 different prime contractors and their subcontractors.
Toll Rates & Traffic Operations. The Golden Gate Bridge serves as a vital transportation link between the City and County of San Francisco and Marin County to the north. The Bridge is a fixed six-lane roadway, is 1.7 miles long (main span is 4,200 feet long), and carries about 112,000 vehicles per day.