NPC Historic Accident

Here is an accident transcribed from the on-going listing of train wrecks in the "Railroad Gazette":
February 1894
14th, on North Pacific Coast Railroad, near Cazadero, Cal., an engine fell through a bridge and into Austin Creek. Seven men on the engine were drowned, and the creek being very high, two of the bodies were carried out to sea. The engine had been run out by the conductor and enginman to learn the condition of the road, much rain having fallen. At the bridge in question the conductor went forward on foot and the disaster occurred after he had walked about a mile, so there is no survivor to tell how it happened, the bridge being in a secluded place. Four of the victims were riding merely for entertainment.
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I don’t know much about the NPC. Is this wreck well known by the researchers and historians of this road? Was this narrow gage at the date of this wreck? Could the location as described be found today, and what would it look like today?
RK