Spokane, Portland and Seattle class L-4

{{one source|date=August 2016}}

{{Infobox locomotive

|name = L-4

|powertype=Steam

|builder = Rogers Locomotive Works

|builddate = November 1883

|whytetype = 4-4-0

|gauge = {{track gauge|ussg}}

|driverdiameter = {{convert|63|in|mm|abbr=on}}

|weightondrivers = {{convert|53200|lb|abbr=on}}

|locoweight = {{convert|73320|lb|abbr=on}}

|fueltype = Oil

|cylindercount = 2

|cylindersize = {{convert|17|x|24|in|mm|abbr=on}}

|boilerpressure = 130 lbf/in²

|tractiveeffort = 13,100 lbf

|operator=Spokane, Portland and Seattle Railway

|locale=United States

|operatorclass= L-4

| notes = Sources: {{cite book| last=Gartner| first=John T.| title=North Bank Road, The Spokane Portland and Seattle Railway| page=206| publisher=WSU Press| year=1990}}

}}

The Spokane, Portland and Seattle Railway (SP&S) class L-4 steam locomotives were originally used by the Astoria and Columbia River Railroad (AC&R). {{Cite web |title=Astoria Railroad Preservation Association: Welcome! |url=https://www.astoriarailroad.org/steam/273.html |access-date=2024-02-07 |website=www.astoriarailroad.org}} They became SP&S locomotives when the SP&S acquired the A&CR.