Spokane, Portland and Seattle class E-1

{{short description|Class of American 4-8-4 locomotives}}

{{Infobox locomotive

| name = Spokane, Portland and Seattle class E-1

| image = Spokane Portland and Seattle engine 700 idle.jpg

| caption = SP&S No. 700 on a Christmas excursion in December 2005

| powertype = Steam

| builder = Baldwin Locomotive Works

| serialnumber = 62171–62173

| builddate = 1938

| totalproduction = 3

| whytetype = 4-8-4

| uicclass = 2′D2′ h2

| gauge = {{track gauge|ussg}}

| driverdiameter = {{convert|77|in|mm|0|abbr=on}}

| axleload = {{convert|77200|lb|t|abbr=in}}

| weightondrivers = {{convert|294500|lb|t|abbr=in}}

| locoweight = {{convert|485820|lb|t|abbr=in}}

| locotenderweight = {{convert|879600|lb|t|abbr=in}}

| fueltype = Oil

| boilerpressure = {{convert|260|psi|MPa|abbr=on|lk=on}}

| cylindercount = Two

| cylindersize = {{convert|28|x|32|in|mm|abbr=on}}

| valvegear = Walschaerts

| tractiveeffort = {{convert|69800|lbf|kN|2|abbr=on}}

| maxspeed = 110 mph / 170 km per hour

| operator = Spokane, Portland and Seattle Railway

| numinclass = 3

| operatorclass = E-1

| fleetnumbers = 700–702

| retiredate = 1955-1957

| preservedunits = No. 700 preserved, Nos. 701 and 702 scrapped

| restoredate = No. 700; May 15, 1990

| currentowner = The City of Portland, Oregon (No. 700)

| disposition = No. 700 undergoing 1,472-day overhaul

}}

Spokane Portland and Seattle Railway's E-1 class was a class of the only three 4-8-4 locomotives built by the Baldwin Locomotive Works in 1938. The E-1 class "Northerns" were very similar to the A-2 through the A-5 class "Northerns" on the Northern Pacific Railroad built by Baldwin from 1934–1943.

Visually, the locos are near-identical. The only difference is that the Northern Pacific Railroad 4-8-4s burn coal and the 4-8-4s on the Spokane, Portland and Seattle Railroad burn oil (and have a longer, wider range as a result).