The 1st Subdivision has 9 tracks of lower yard storage (15 foot sidings) and a main track reversing loop. The 2nd Sub has the Seaport Station Passenger yard (5 thru tracks, one Commissary track); 7 track classification yard at Half Moon; and an Intermodal trailer & container facility. The 3rd Sub is Post Falls (on the peninsula); 4th Sub is the Hill City lumber and farming area (peninsula upper level) and the 5th Sub is Mountain Home with a mining camp, located above the South Helix.
11 scales miles of double main line trackage on 2 levels (over 674 feet), over 170 turnouts, two large yards, a six track passenger station, an 11 stall roundhouse with turntable, a logging mill, diesel repair shop & diesel facilities, two towns, a coal/logging operation on a mountain, and two helixes at either end of the layout room make up the OMRS Layout, with a large hidden staging yard underneath it all.
Train control is via a Digitrax Digital Command Control System with a JMRI computer interface that allows for multi person operations using Digitrax throttles or personal cell phones using the "Engine Driver" app (Android) or "WiThrottle" app (IOS), with a full signal system and dispatching panel to regulate train movements. The layout can operate with as few as 1 lone operator (turnouts may be controlled via one of the aforementioned apps), or with multiple operators in a realistic version of a real railroading scenario.