Disneyland also has a tunnel in Tomorrowland - it was used for the original rising stage, and was later changed to serve as the Rocket Rods queue.
Actually, the Rocket Rods queue was built underground in '98. They use it still for the queues for pin trading days when new pins are released.
Tomorrowland was rebuilt in 1966-67 and they included a few underground corridors, the main one large enough for small trucks to drive through goes from the Carousel Theater building over to Tomorrowland Terrace, passing the prep area for the Terrace stage when it is in the down position underground. That's where the concept of Disneyland's lone "utilidor" comes from, since it's just a hallway large enough for small trucks with some loading platforms along its length. Performers and set pieces for Tomorrowland Terrace are also loaded on the stage down there, and then it rises up to the dancefloor level for shows. There are some supply rooms and a CM break room in that corridor as well.
For Rocket Rods, the queue began in the old CircleVision theater, then dove underground down two flights of stairs. The queue was built in a tunnel in '97 (A cut and cover construction method) that joins up with the staircase that rose up to the old PeopleMover loading platform that had been rebuilt as the Rocket Rods loading platform.
There is nothing that is branded as a "Utilidor" in Disneyland. But since Anaheim is on dusty soil laying on solid bedrock, you can build down into massive basements as deep as you'd like without worrying about the water table. Many Disneyland developments built in the 1960's onward have large basements and underground facilities.
Pirates of the Caribbean/New Orleans Square built in '66 is the largest, with underground kitchens, offices, CM cafeteria, breakrooms, supply rooms, pantries, entertainment green rooms, etc. Anyone who has been evacuated off of Pirates gets to walk through these underground corridors past all of the offices and facilities. There are a series of elevators and dumbwaiters to get people and supplies and food up and down to the restaurants and attractions above New Orleans Square.
Fantasyland, built in '83, also has a large underground basement with offices, ride control rooms, CM breakrooms, stock rooms, etc.
Toontown in '93, Tom Sawyer Island Fantasmic infrastructure in '92, Space Mountain Concourse in '77, Bear Country/Critter Country in '72 also all have basements and underground corridors.
So much of Disneyland has basements and sub-basements where CM work and move every day. The difference is that these land or attraction based facilities are not interconnected with each other. So the sprawling basements of New Orleans Square are not connected to Fantasyland or Tomorrowland or so on.
DCA has some basements in Hollywood Pictures Backlot and Paradise Pier, with the Soarin' attraction facility sunk about 35 feet down into the ground to minimize the height of the show building. Tough To Be A Bug theater is also sunk into the ground, but by about 20 feet. Like Disneyland however, these DCA basements and underground support facilities are not interconnected between the lands.
