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This landmark is located Located in the riverfront park at the foot of G Street in West Sacramento, California. The GPS coordinates for this location are N 38° 35.000 W 121° 30.530.
A list of Pony Express Waymarks that I have visited can be found here. You can log your visit to this landmark at waymark.com.
The first bridge to span the Sacramento River was built by the Sacramento and Yolo Bridge Company. It was a wooden span bridge, completed on June 27, 1858 at a cost of $60,000. The toll was $0.05 per pedertrian.
The bridge was 70 and 174 feet north of the west and east ends of today's "I" Street bridge. This bridge was used by the 1860-1861 Pony Express 20 times from Sacramento to San Francisco. All other Pony Express mail between these two cities both westbound and eastbound was carried by the river streamers. They docked at the foot of "K" street in Old Sacramento.
Sam Hamilton was the first Pony Express rider over this bridge. He left Sacramento at 1:15 a.m. on April 23, 1860 crossing here a few minutes later.