Mushroom Bridge is a racecourse from the Mario Kart series. Its first appearance is in Mario Kart: Double Dash!! as the first racecourse of the Flower Cup. Later, the course makes a reappearance in Mario Kart DS as a retro racecourse of the Leaf Cup. The course takes place on a one-way highway near the coast, and the racers have to share the track with slower vehicles that almost always damage the player when struck. The highway runs over the Mushroom Bridge that gives the course its name.
The track starts out just before the first left-hand curve. Players can take a path leading off of the main course to the right shortly after the starting line, which goes down a slope to a Warp Pipe leading to the only Double Item Box found in the course as it blasts the players back onto the track. The course then heads into a curving tunnel lit up with blue lights. The players catch up to the cars they share the track with in the tunnel, and after clearing the curve, they encounter three item boxes.
After leaving the tunnel, the track curves between the coast and some hills topped with mushroom-like huts. A path leads over the hill, but if the players do not have a speed-boosting Mushroom or Invincibility Star, their kart will be slowed down substantially by the dirt. Another alternate route exists in this section of track: there is a sidewalk on the left hand side of the track, and while its usually separated from the road by fencing, there are open sections granting the players access. There are item blocks on the sidewalks, and the fence protects players from projectiles thrown by the other racers, such as Red Shells; they can also avoid the traffic on the main road using this route.
After curving past the hills, there is a short straightaway; the sidewalk empties back into the road, and the racers all pass through a row of three item blocks before entering the second tunnel of the track. The tunnel curves around to the left, opening up on a straightaway leading to the bridge that gives the course its name. Halfway along the bridge are three more item blocks. There are two more item blocks on the tops of the bridge's beams, which are also inlaid with Dash Panels, meaning players who attempt to cross the bridge that way run the risk of losing control and falling off (either onto the track below, which wastes time, or into the water which means they need to be rescued by Lakitu, which takes even longer). After the bridge is the finish line and the start of the next lap.
In Mario Kart DS, the course underwent considerable changes. It is simpler, shorter and doesn't have as many obstacles as in Mario Kart: Double Dash!! All the alternate ways were removed, excluding the shortcut over the hills. This version of Mushroom Bridge now features vehicles from Shroom Ridge. It is also one of the shortest tracks.
There is planned to be what appears to be a snowboarding Dream Event. The whole road is covered in snow. However, it is unknown if there are any vehicle obstacles or any obstacles included.
 Other Vehicles
 Official descriptions
 Mario Kart: Double Dash!!
 Names in Other Languages