How to Build a Double-Decked Expressway in Cities Skylines
Updated: May 20
How to Build a Double-Decked Expressway in Cities Skylines
The Shuto Expressway in Tokyo is famous for stacked highway sections. Episode 10 recreates this with a double-decked E52 expressway — one of the most technically demanding builds in the series.
Road Placement
Two road segments aligned vertically. Lower level at 8-12 meters above ground, upper level 6-7 meters higher. Node-by-node alignment is critical — any horizontal drift makes the stacking look sloppy.
Road Marking
Using IMT, Japanese expressway markings on both levels: edge lines, lane dividers, chevron areas, text markings. Each level gets its own complete set.
Pillar Placing
Single-height pillars for the elevated section, double-height for the stacked section. Spaced every 25-30 meters with pillar caps, cross-beams, and anti-seismic dampers — a distinctly Japanese engineering detail.
Lane Indication Signs
Overhead gantry signs with kanji destination names and romanized text, constructed using gantry frame props and Procedural Objects following Japanese expressway conventions.
This analysis of building double-decked expressways in Cities: Skylines is exactly what I'll be sending to friends who ask for advice on the topic. Honestly, you've managed to break down such a complex subject without losing any of its nuance, which is a real feat. It feels like required reading for anyone tackling this in-game construction challenge https://www.betstop.gov.au/ My own biggest hurdle when I first attempted it was getting over the fear of not being prepared enough; the most valuable lesson I learned was simply to start, even with imperfect plans. It's fascinating to consider whether the process is more art or science in your view. It would also be incredibly insightful to see how different player demographics approach this…
This is such a fantastic breakdown of creating elevated highways in Cities: Skylines, and it really resonates with how I approach it too! I often find myself meticulously planning out those double-decked structures, aiming for that perfect balance of efficiency and aesthetics. Reading about your methods here was incredibly stimulating, especially seeing how you tackle traffic flow at those crucial interchanges https://www.betstop.gov.au/ It’s also worth highlighting the network effects you mentioned; the way one well-placed elevated road can ripple outwards and improve connectivity across an entire district is truly fascinating. I've experienced that firsthand when trying to alleviate congestion in my own cities, and it’s always so rewarding when it works. The examples you provided about managing complex intersections were…