About the N.C.N.G. Layout
A volunteer-built, operating On3 scale model railroad at the Nevada County Fairgrounds since 1986.
Interpreting the Original Railroad
The layout interprets the Nevada County Narrow Gauge Railroad through an operating On3 scale model. The original line ran from Colfax to Nevada City by way of Chicago Park and Grass Valley, carrying passengers, freight, and mining supplies through western Nevada County.
Volunteers research, build, wire, maintain, and operate the layout so visitors can see the trains, structures, and local scenes together instead of only reading about them.
A Brief Timeline
Construction begins on February 11, breaking ground near Colfax
The line is completed and the last spike is driven at Nevada City on May 20, connecting Colfax, Chicago Park, Grass Valley, and Nevada City
Last train runs; the railroad ceases operations after 66 years of service
NCNG Historical Model Railroad is founded as the "N.C.N.G. Project," and basic layout construction begins
The layout continues to grow at Nevada County Fairgrounds
Volunteer team continues to expand and improve the On3 scale layout
On3 Scale Precision
What is On3?
"On3" refers to O scale (1:48 ratio) representing three-foot-gauge track. This scale accurately represents the narrow gauge equipment used by the original N.C.N.G. railroad.
Features
- DCC digital control system
- Historically accurate locomotives
- Period-correct rolling stock
- "Train Cam TV" on-board cameras
- Detailed scenery and structures
Towns & Scenes
The layout recreates key communities, stops, and scenic details along the original line:
Nevada City
Northern terminus of the line
Grass Valley
Heart of the mining district
Chicago Park
Community stop along the original line
Colfax
Connection to SP mainline
Plus scenic highlights like Town Talk, the Bear River Bridge, gold mining operations, and other familiar local scenes.
Built and Run by Volunteers
The layout is built, maintained, and operated by volunteers who contribute carpentry, wiring, scenery, research, and operating time.
Note: We are a separate organization not affiliated with other museums or groups.
Visit Us
Grass Valley, California
We are open to the public only during events published on this site.
View EventsGet in Touch
For questions about published events or volunteering, please contact us: