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This might help. It looks like two NP lines from Spokane to Orchards.

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Preserving "America's RR"
What threw me initially is that your first picture is oriented facing south and the second is facing north. Once I got my bering, I think I can unravel it for you. If you follow the old unused track that curves northward and served the businesses north of E. Trent Ave. and west of the river you will find it loops back (or did) to the U.P. (ex- Spokane Intl.) Yes those tracks were UP's that eventually interchanged with the N.P. I you follow the mystery bridge line you will find it runs right into this interchange track, and if you follow it east you will find it leads to this industrial area near N. Flora Rd. and eventually back to UP (ex-Spokane Int.) tracks.,-117.17877&spn=0.004983,0.013894&t=h&z=17

My guess would be that the bridge carried an interchange track by which Spokane Int. delivered cars it was handing off to the NP for the trip east or west. If you look just east of the bridge you see evidence of a spur ducking under the NP main and serving an old business area.,-117.222029&spn=0.004983,0.013894&t=h&z=17

Spokane Intl. made it's living switching the local businesses and then sending the merchandise off to the requisite big RR for delivery.

Thanks for the mystery.


New Member
There used to be three different spurs into Idea Cement, NP, GN and UP. The UP and GN spurs followed the Spokane River from the area of the Millwood Paper Mill to Cement plant. The UP was down by the River while GN was on top the Bluff. The ties are probably the far end of the UP or GN line. Also keep in mind that GN's Couer d'Alene branch paralleled the UP from Napa St Jct to the Spokane Valley Mall at one time. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to - An online railroad bookstore featuring a curated selection of new and used railroad books. Railroad pictorials, railroad history, steam locomotives, passenger trains, modern railroading. Hundreds of titles available, most at discount prices! We also have a video and children's book section. - An online model railroad bookstore featuring a curated selection of new and used books. Layout design, track plans, scenery and structure building, wiring, DCC, Tinplate, Toy Trains, Price Guides and more.

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