Union Pacific 4466

Specifications
Specifications
Configuration:;
• Whyte	0-6-0
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	51 in (1,295 mm)
Adhesive weight	159,000 lb (72,000 kg)
Loco weight	159,000 lb (72,000 kg)
Fuel type	Coal
Boiler pressure	180 psi (1,200 kPa)
Cylinder size	21 in (530 mm) dia × 26 in (660 mm) stroke

Type and origin
Type and origin
Power type	Steam
Builder	Lima Locomotive Works
Serial number	6003
Build date	October 1920

Union Pacific 4466
Union Pacific 4466
	UP No. 4466 on static display at the California State Railroad Museum
Power type
Type and origin
Power type	Steam
Builder	Lima Locomotive Works
Serial number	6003
Build date	October 1920
Configuration:;
Specifications
Configuration:;
• Whyte	0-6-0
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Driver dia.	51 in (1,295 mm)
Adhesive weight	159,000 lb (72,000 kg)
Loco weight	159,000 lb (72,000 kg)
Fuel type	Coal
Boiler pressure	180 psi (1,200 kPa)
Cylinder size	21 in (530 mm) dia × 26 in (660 mm) stroke
Tractive effort
Performance figures
Tractive effort	34,400 lbf (153,000 N), 78,000 lbf (350,000 N) with booster
Operators
Career
Operators	Union Pacific
Class	S-6 (Cabside class S-51)
Numbers	UP 4466
Retired	1962 (revenue service); 1999 (excursion service)
Restored	1984
Current owner	California State Railroad Museum
Disposition	On static display

Union Pacific 4466 is an 0-6-0 steam locomotive built in October 1920 by the Lima Locomotive Works for the Union Pacific Railroad (UP) to perform switching chores and transfer runs.

History edit

Revenue service edit

UP 4466 spent most of its career in Cheyenne, Wyoming, as a shop switcher and was the UP Cheyenne Shop's last steam shop switcher. After its stint in Cheyenne, 4466 was transferred to Grand Island, Nebraska in 1960. The locomotive was retired from revenue service in July 1962.^[1] It continued to remain in Grand Island in storage until 1973 when it was donated to the Railway and Locomotive Historical Society.^[2]

Excursion service edit

In 1978, No. 4466 was donated to the California State Railroad Museum. In 1984, it was restored to operating service and pulled excursion trains for the museum. In 1986, 4466 ventured to Vancouver, British Columbia, to be part of Steam Expo '86.^[3] This was not the only time 4466 took part in such a celebration; it also went to Sacramento (its current home) to take part in the Rail Fair of 1991.

Disposition edit

In 1999, the 4466’s FRA boiler certificate expired. The CSRM decided not to pursue an overhaul, causing the 4466 to be retired and put on indefinite static display. In 2012 it was taken out to take part in the Union Pacific's 150th anniversary celebration. As of 2023, it is currently on static display at the California State Railroad Museum.