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This bridge has an interesting history. The first bridge at this location was built in 1885 and was a wooden structure. It did not last long: in 1893 is was replaced by an extremely unusual bridge that looked like a metal truss, but was described by its builder, the San Francisco Bridge Company, as a hinged arch bridge. In 1917, an attempt to replace the 1893 bridge took place with the construction of a concrete arch bridge. However, during construction the concrete arch, which was still being supported by wooden falsework, collapsed completely. Another attempt to build a concrete arch bridge was made in the same year and this time was successful, and the bridge opened later that year. In 1937, another major event occurred when the bridge was widened. To widen the bridge, a third arch rib was added. This would have required the replacement of railing on at least one side of the bridge. It is not known if the railing was replaced on just the one side or if it was replaced on both sides. In either case, the railing seen today is the same visual appearance as the original 1917 railing. Additionally, the third arch rib that was added looks very similar to the original arch ribs. As such, the bridge was the victim of a major alteration, but at least the alteration was respective the original bridge design and appearance.
When completed in 1917, this bridge had pin-connected railroad truss bridges that paralleled the bridge on either side. Neither of these bridges exist today.
Above: These photos show the complete collapse of the first attempt to build a concrete arch bridge on Post Street.
The above photos show the bridge being constructed with the falsework still in place. It is not known if this was the first or second attempt to build the arch bridge.
The above photos show the bridge newly completed. These photos make a good comparison to the present-day bridge photos in the photo gallery. Note in these photos the bridge has not been widened and only has two arch ribs. Also note that the original railing looks very similar to the railing seen on the bridge today.
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