Nether Highways

The four main nether highways are the most frequently used roads by 9b6t players. They start at nether spawn and extend in all four cardinal directions and are named after the axis of the Minecraft coordinate system they follow. They began being extended by bots in January 2020, and Stormfront took maintenance on Y=120 and diagonal highways in June 2020.

Maintenance
Around January 16th, 2020, the Nether Highways have been extended with obsidian roads until 5k with the help of bots, rather than just going until around 200 blocks from 0 0. Venturello is working on extending the -Z Highway from 1x2 to 2x3 for easier use of elytras and donkeys until around 80k Overworld. Initially, the highways were built at Y=113. auburnhud2 was so frustrated by this, that he started to build new highways at Y=120, like they should be.

+X Highway
The Obsidian Highway was built by an unknown player (Baritone Bot).
 * Obsidian Highway: 5k Nether/40k Overworld

-X Highway
The Obsidian Highway was built by an unknown player (Baritone Bot).
 * Obsidian Highway: 5k Nether/40k Overworld

+Z Highway

 * Obsidian Highway: 5k Nether/40k Overworld
 * 4x3 Tunnel Length: 15.6k Nether/125k Overworld.
 * 1x2 Tunnel Length: 875k Nether/7 million Overworld.

The Obsidian Highway was built by an unknown player (Baritone Bot). The 4x3 highway was extended from 800 blocks to 125 thousand blocks by members of Team Lead The Way. The 1x2 highway was extended from 125k to 1 million by Forallotheruses.

-Z Highway
The Obsidian Highway was built by an unknown player (Baritone Bot).
 * Obsidian Highway: 5k Nether/40k Overworld
 * 4x3 Tunnel Length: 5.5k Nether/44k Overworld
 * 1x2 Tunnel Length: 13.7 Nether/110k Overworld

New Y=120 Highways
On June 20, 2020 construction began of the far superior y=120 highways by Stormfront, led by auburnhud2. The highways are 5 wide until 5k Nether, and then 3 wide afterwards. Stormfront also began work on the diagonal highways.

+X Highway

 * Obsidian Highway: 5k Nether/40k Overworld

The Obsidian Highway was built by auburnhud2 to 5k, then by ThomasB5617 to 10k

-X Highway
The Obsidian Highway was built by auburnhud2.
 * Obsidian Highway: 5k Nether/40k Overworld

+Z Highway
The Obsidian Highway was built by auburnhud2.
 * Obsidian Highway: 5k Nether/40k Overworld

-Z Highway
The Obsidian Highway was built by auburnhud2.
 * Obsidian Highway: 5k Nether/40k Overworld

Diagonal Highways
Travel along the diagonal highways can be faster than traveling on the cardinal highways by up to a factor of $$\sqrt{2} \approx 1.4142$$.

+X+Z Highway
The Obsidian Highway was built by auburnhud2.
 * Obsidian Highway: 200 Nether/1.6k Overworld

-X+Z Highway
The Obsidian Highway was built by auburnhud2.
 * Obsidian Highway: 200 Nether/1.6k Overworld

+X-Z Highway
The Obsidian Highway was built by auburnhud2.
 * Obsidian Highway: 200 Nether/1.6k Overworld

-X-Z Highway
The Obsidian Highway was built by auburnhud2.
 * Obsidian Highway: 200 Nether/1.6k Overworld