2001: The last day of operation for the last wooden signal tower operating in California.
The Redondo Junction Tower had been in continuous operation, 24 hours a day, seven days a week, since 1906.
The tower was built under an agreement between the Santa Fe Railroad Company and the San Pedro, Los Angeles & Salt Lake Railroad.
By 1913, it reported over 100 train actions per day.
More information can be found in the 2001 Alameda Corridor Project Redondo Junction Tower environmental impact report full-text report.