Pennsylvania Railroad Class D16

Pennsylvania Railroad Class D16
Technical specifications
Build date	1895–1910
Total produced	429
Rail gauge	Standard
Performance figures
Tractive effort	23,900 lbf

Class D16 on the Pennsylvania Railroad was their final development of the 4-4-0 "American" type of steam locomotive. A total of 429 of these locomotives were built at the PRR's Juniata Shops between 1895-1910, spread across five subclasses; some had 80 in (2,030 mm) diameter driving wheels for service in level territory, while others had 68 in (1,730 mm) drivers for mountainous terrain. In the pre-1895 scheme, these locomotives were second class L.

Several D16b locomotives were built by the PRR in 1905 and 1906 for their subsidiary the Long Island Railroad (LIRR). The D16b had the traditional PRR squared-off firebox which originally had a rounded edge to the smokebox and the cylinder box was square. When superheated, they were re-classed D16sb. The cylinder box was rebuilt in a different shape and a pipe connected that box with the smokebox, allowing superheated steam into the cylinders. The classification lights were relocated to atop the rebuilt smokebox.

Construction continued until 1910, and the locomotives, aided by a rebuild program from 1914, remained in service in large numbers until the 1930s, a small number surviving into the 1940s. The LIRR D16's were all retired by 1925-1934 with the majority of them gone by 1928-29 after the arrival of the G5s fleet

One locomotive, No. 1223, was preserved and is currently on static display at the Railroad Museum of Pennsylvania.

Accidents and incidents

*In 1903, while hauling Train No. 21, 443 crashed in the Harrisburg train yard, and crashed on top of a gondola.*

Gallery