This is from my Google map. The RoW location under the highway is assumed per SVRy plat maps, the parts not under the highway are accurate per on site exploration. Yes, there is an S curve in the mainline before reaching Red bridge when traveling RR west. I was told to avoid S curves when planning model rr's, but wouldn't it be prototypical? If my memory is correct, per my SVRy cohorts it is believed that the sawmill south of the mainline served by the short spur crossing the Powder River was owned by Shockley and McMurran Lumber Co. who were somehow tied up with the owners of the Stoddard Lumber Company, who eventually gained control. The Boulder Gorge siding is shown on my map with the mainline north of the siding. At some point, don't remember when or why exactly, the SVRy reversed the designation so that the mainline was south of the siding. The California Creek spur supposedly saw a Stoddard Lumber Company engineer killed in an accident on the first run of #2, a 25 ton Heisler known as "Old Brigham" whose tender is believed to be the one used as a stock watering tank near the end of the Black Mtn spur. BRIAN