Interblox 21 is an Interblox highway in Robloxia, which is the second most frequently used Interblox in the country. Its route runs through most of the country, from the northeast to the west. The highway begins in New Rampshire, at the border with Bloxanada. It then traverses numerous states, including Central Robloxia, Bloxuisiana, Bloxissouri, Ro Kansas, Blocahoma, Bloxorado, Brickland, Rovada, and Bloxburg Valley. Along the way, it passes numerous cities, including Roncord, Rokadia, Harris, and Sacramento, where it ends. It intersects or meets numerous other highways. Robloxians often refer to the road as the Robloxia branch as it is a large road running west that connects to many local roads. While it does not pass through many major cities, it fits perfectly into the space between them, serving as a connecting point for many other Interbloxes, allowing for quick east-west travel. It is also sometimes referred to as the centrum of Robloxia, as it intersects with every major Interblox in the country, running through its center.
Primary InterbloxesNote that Interbloxes shown in Italic is a proposed interblox.
Secondary Interbloxes142 145 165 166 180/BLOXOMING 199/BLOXBURG VALLEY 242 245 265 266/B240 269 293 345 355 365 376 465 509 565 610 666 |
Route
| City | Exits |
|---|---|
| New Rampshire | |
| Johnstown | New Rampshire SR 6 |
| Roncord | New Rampshire SR 1 |
| Central Robloxia | |
| Rokadia | Interblox 80 Interblox 81 Central Robloxia SR 2 |
| September Valley | Interblox 79 Central Robloxia SR 3 |
| Saint Johns | Central Robloxia SR 9 |
| Amberville | Central Robloxia SR 1 |
| Gillent | Interblox 83 |
| Blox Hills | Central Robloxia SR 12 |
| Aberdeen | Interblox 42 |
| Bloxuisiana | |
| Hillsburg | Bloxuisiana SR 18 |
| Bloxissouri | |
| Eastern Caves | Interblox 69 |
| Foreston | Bloxissouri SR 1 |
| Millersburg | Interblox 52 Bloxissouri SR 5 |
| Ro Kansas | |
| Lemon Town | Interblox 45 Interblox 80 |
| Frin | Interblox 666 |
| Blueville | Interblox 28 Ro Kansas SR 2 |
| Blocahoma | |
| Highberg | Blocahoma SR 6 |
| Bloxorado | |
| Golden Valley | Interblox 28 Interblox 66 |
| Brickland | |
| Salestown | Brickland SR 2 |
| Harris | Interblox 45 Interblox 67 Interblox 82 |
| Rovada | |
| Mansionsville | Rovada SR 1 |
| Bloxeno | Rovada SR 3 |
| Bloxburg Valley | |
| Buenos Lagos | Interblox 9 Bloxburg Valley SR 99 |
| Paradise | Interblox 9 Bloxburg Valley SR 99 |
| Sacramento | Interblox 5 Interblox 65 Interblox 84 |
