How To Track Plan Database The HO scale Willoughby Line layout

The HO scale Willoughby Line layout

By Mitch Horner | July 3, 2025

Using prototype elements in freelanced HO layout design

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Facts and features

Name: Willoughby Line
Scale: HO and HOn3 (1:87.1)
Size: 13 x 22 feet
Prototype: proto-freelanced
Locale: California’s Central Valley and Sierra Nevada
Era: 1935-1950
Style: multi-deck walk-in
Mainline run: 180 feet
Minimum radius: 30″
Minimum turnout: No. 6
Maximum grade: 2%
Benchwork: L-girder and plywood brackets (upper deck)
Height: 40 to 60 inches
Roadbed: Homasote
Track: Micro Engineering codes 55, 70, and 83 flextrack
Scenery: Hydrocal hard shell on wire screen
Backdrop: hand-painted tempered hardboard and drywall
Control: CVP Easy DCC

A multi level model railroad track plan

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