diff --git a/core/modules/menu/lib/Drupal/menu/MenuFormController.php b/core/modules/menu/lib/Drupal/menu/MenuFormController.php
index 4eeab27..bc3b2c8 100644
--- a/core/modules/menu/lib/Drupal/menu/MenuFormController.php
+++ b/core/modules/menu/lib/Drupal/menu/MenuFormController.php
@@ -8,6 +8,7 @@
 namespace Drupal\menu;
 
 use Drupal\Core\Entity\EntityFormController;
+use Drupal\Core\Language\Language;
 
 /**
  * Base form controller for menu edit forms.
@@ -18,7 +19,6 @@ class MenuFormController extends EntityFormController {
    * Overrides Drupal\Core\Entity\EntityFormController::form().
    */
   public function form(array $form, array &$form_state) {
-    $form = parent::form($form, $form_state);
     $menu = $this->entity;
     $system_menus = menu_list_system_menus();
     $form_state['menu'] = &$menu;
@@ -35,6 +35,7 @@ public function form(array $form, array &$form_state) {
       '#default_value' => $menu->id(),
       '#maxlength' => MENU_MAX_MENU_NAME_LENGTH_UI,
       '#description' => t('A unique name to construct the URL for the menu. It must only contain lowercase letters, numbers and hyphens.'),
+      '#field_prefix' => 'menu-',
       '#machine_name' => array(
         'exists' => 'menu_edit_menu_name_exists',
         'source' => array('label'),
@@ -51,6 +52,29 @@ public function form(array $form, array &$form_state) {
       '#default_value' => $menu->description,
     );
 
+    $form['langcode'] = array(
+      '#type' => 'language_select',
+      '#title' => t('Menu language'),
+      '#languages' => Language::STATE_ALL,
+      '#default_value' => $menu->langcode,
+    );
+    // Unlike the menu langcode, the default language configuration for menu
+    // links only works with language module installed.
+    if (\Drupal::moduleHandler()->moduleExists('language')) {
+      $form['default_menu_links_language'] = array(
+        '#type' => 'details',
+        '#title' => t('Menu links language'),
+      );
+      $form['default_menu_links_language']['default_language'] = array(
+        '#type' => 'language_configuration',
+        '#entity_information' => array(
+          'entity_type' => 'menu_link',
+          'bundle' => $menu->id(),
+        ),
+        '#default_value' => language_get_default_configuration('menu_link', $menu->id()),
+      );
+    }
+
     // Add menu links administration form for existing menus.
     if (!$menu->isNew() || isset($system_menus[$menu->id()])) {
       // Form API supports constructing and validating self-contained sections
@@ -63,7 +87,7 @@ public function form(array $form, array &$form_state) {
       $form['links'] = menu_overview_form($form['links'], $form_state);
     }
 
-    return $form;
+    return parent::form($form, $form_state);
   }
 
   /**
@@ -76,10 +100,44 @@ protected function actions(array $form, array &$form_state) {
     $system_menus = menu_list_system_menus();
     $actions['delete']['#access'] = !$menu->isNew() && !isset($system_menus[$menu->id()]);
 
+    // Add the language configuration submit handler. This is needed because the
+    // submit button has custom submit handlers.
+    if (\Drupal::moduleHandler()->moduleExists('language')) {
+      array_unshift($actions['submit']['#submit'],'language_configuration_element_submit');
+      array_unshift($actions['submit']['#submit'], array($this, 'languageConfigurationSubmit'));
+    }
+    // We cannot leverage the regular submit handler definition because we have
+    // button-specific ones here. Hence we need to explicitly set it for the
+    // submit action, otherwise it would be ignored.
+    if (\Drupal::moduleHandler()->moduleExists('translation_entity')) {
+      array_unshift($actions['submit']['#submit'], 'translation_entity_language_configuration_element_submit');
+    }
     return $actions;
   }
 
   /**
+   * {@inheritdoc}
+   */
+  public function validate(array $form, array &$form_state) {
+    // The machine name is validated automatically, we only need to add the
+    // 'menu-' prefix here.
+    $form_state['values']['id'] = 'menu-' . $form_state['values']['id'];
+  }
+
+  /**
+   * Submit handler to update the bundle for the default language configuration.
+   */
+  public function languageConfigurationSubmit(array &$form, array &$form_state) {
+    // Since the machine name is not known yet, and it can be changed anytime,
+    // we have to also update the bundle property for the default language
+    // configuration in order to have the correct bundle value.
+    $form_state['language']['default_language']['bundle'] = $form_state['values']['id'];
+    // Clear cache so new menus (bundles) show on the language settings admin
+    // page.
+    entity_info_cache_clear();
+  }
+
+  /**
    * Overrides Drupal\Core\Entity\EntityFormController::save().
    */
   public function save(array $form, array &$form_state) {
@@ -90,11 +148,6 @@ public function save(array $form, array &$form_state) {
       menu_overview_form_submit($form, $form_state);
     }
 
-    if ($menu->isNew()) {
-      // Add 'menu-' to the menu name to help avoid name-space conflicts.
-      $menu->set('id', 'menu-' . $menu->id());
-    }
-
     $status = $menu->save();
 
     $uri = $menu->uri();
diff --git a/core/modules/menu/lib/Drupal/menu/Tests/MenuLanguageTest.php b/core/modules/menu/lib/Drupal/menu/Tests/MenuLanguageTest.php
new file mode 100644
index 0000000..c49c716
--- /dev/null
+++ b/core/modules/menu/lib/Drupal/menu/Tests/MenuLanguageTest.php
@@ -0,0 +1,151 @@
+<?php
+
+/**
+ * @file
+ * Tests for menu language settings.
+ */
+
+namespace Drupal\menu\Tests;
+
+use Drupal\Core\Language\Language;
+
+/**
+ * Defines a test class for testing menu language functionality.
+ */
+class MenuLanguageTest extends MenuWebTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = array('language');
+
+  protected $admin_user;
+  protected $menu;
+
+  public static function getInfo() {
+    return array(
+      'name' => 'Menu language',
+      'description' => 'Create menu and menu links in non-English language, and edit language settings.',
+      'group' => 'Menu'
+    );
+  }
+
+  function setUp() {
+    parent::setUp();
+
+    // Create user.
+    $this->admin_user = $this->drupalCreateUser(array('access administration pages', 'administer menu'));
+    $this->drupalLogin($this->admin_user);
+
+    // Add some custom languages.
+    foreach (array('aa', 'bb', 'cc') as $language_code) {
+      $language = new Language(array(
+        'langcode' => $language_code,
+        'name' => $this->randomName(),
+      ));
+      language_save($language);
+    }
+  }
+
+  /**
+   * Tests menu language settings and the defaults for menu link items.
+   */
+  function testMenuLanguage() {
+    // Create a test menu to test the various language-related settings.
+    // Machine name has to be lowercase.
+    $menu_name = drupal_strtolower($this->randomName(16));
+    $label = $this->randomString();
+    $edit = array(
+      'id' => $menu_name,
+      'description' => '',
+      'label' =>  $label,
+      'langcode' => 'aa',
+      'default_language[langcode]' => 'bb',
+      'default_language[language_show]' => TRUE,
+    );
+    $this->drupalPost('admin/structure/menu/add', $edit, t('Save'));
+
+    // Check that the language settings were saved.
+    $this->assertEqual(entity_load('menu', $menu_name)->langcode, $edit['langcode']);
+    $language_settings = language_get_default_configuration('menu_link', $menu_name);
+    $this->assertEqual($language_settings['langcode'], 'bb');
+    $this->assertEqual($language_settings['language_show'], TRUE);
+
+    // Check menu language and item language configuration.
+    $this->assertOptionSelected('edit-langcode', $edit['langcode'], 'The menu language was correctly selected.');
+    $this->assertOptionSelected('edit-default-language-langcode', $edit['default_language[langcode]'], 'The menu link default language was correctly selected.');
+    $this->assertFieldChecked('edit-default-language-language-show');
+
+    // Test menu link language.
+    $link_path = '<front>';
+
+    // Add a menu link.
+    $link_title = $this->randomString();
+    $edit = array(
+      'link_title' => $link_title,
+      'link_path' => $link_path,
+    );
+    $this->drupalPost("admin/structure/menu/manage/$menu_name/add", $edit, t('Save'));
+    // Check the link was added with the correct menu link default language.
+    $menu_links = entity_load_multiple_by_properties('menu_link', array('link_title' => $link_title));
+    $menu_link = reset($menu_links);
+    $this->assertMenuLink($menu_link->id(), array('menu_name' => $menu_name, 'link_path' => $link_path, 'langcode' => 'bb'));
+
+    // Edit menu link default, changing it to cc.
+    $edit = array(
+      'default_language[langcode]' => 'cc',
+    );
+    $this->drupalPost("admin/structure/menu/manage/$menu_name", $edit, t('Save'));
+
+    // Check cc is the menu link default.
+    $this->assertOptionSelected('edit-default-language-langcode', $edit['default_language[langcode]'], 'The menu link default language was correctly selected.');
+
+    // Add a menu link.
+    $link_title = $this->randomString();
+    $edit = array(
+      'link_title' => $link_title,
+      'link_path' => $link_path,
+    );
+    $this->drupalPost("admin/structure/menu/manage/$menu_name/add", $edit, t('Save'));
+    // Check the link was added with the correct new menu link default language.
+    $menu_links = entity_load_multiple_by_properties('menu_link', array('link_title' => $link_title));
+    $menu_link = reset($menu_links);
+    $this->assertMenuLink($menu_link->id(), array(
+      'menu_name' => $menu_name,
+      'link_path' => $link_path,
+      'langcode' => 'cc'
+    ));
+
+    // Now change the language of the new link to 'bb'.
+    $edit = array(
+      'langcode' => 'bb',
+    );
+    $this->drupalPost('admin/structure/menu/item/' . $menu_link->id() . '/edit', $edit, t('Save'));
+    $this->assertMenuLink($menu_link->id(), array(
+      'menu_name' => $menu_name,
+      'link_path' => $link_path,
+      'langcode' => 'bb'
+    ));
+    // Check that the language selector has the correct default value.
+    $this->assertOptionSelected('edit-langcode', 'bb', 'The menu link language was correctly selected.');
+
+    // Edit menu to hide the language select on menu link item add.
+    $edit = array(
+      'default_language[language_show]' => FALSE,
+    );
+    $this->drupalPost("admin/structure/menu/manage/$menu_name", $edit, t('Save'));
+    $this->assertNoFieldChecked('edit-default-language-language-show');
+
+    // Check that the language settings were saved.
+    $language_settings = language_get_default_configuration('menu_link', $menu_name);
+    $this->assertEqual($language_settings['langcode'], 'cc');
+    $this->assertEqual($language_settings['language_show'], FALSE);
+
+    // Check that the language selector is not available on menu link add page.
+    $this->drupalGet("admin/structure/menu/manage/$menu_name/add");
+    $this->assertNoField('edit-langcode', 'The language selector field was hidden the page');
+  }
+
+}
diff --git a/core/modules/menu/lib/Drupal/menu/Tests/MenuTest.php b/core/modules/menu/lib/Drupal/menu/Tests/MenuTest.php
index 46e6825..1bacdad 100644
--- a/core/modules/menu/lib/Drupal/menu/Tests/MenuTest.php
+++ b/core/modules/menu/lib/Drupal/menu/Tests/MenuTest.php
@@ -7,16 +7,17 @@
 
 namespace Drupal\menu\Tests;
 
-use Drupal\simpletest\WebTestBase;
-
-class MenuTest extends WebTestBase {
+/**
+ * Defines a test class for testing menu and menu link functionality.
+ */
+class MenuTest extends MenuWebTestBase {
 
   /**
    * Modules to enable.
    *
    * @var array
    */
-  public static $modules = array('menu', 'block', 'test_page_test', 'contextual');
+  public static $modules = array('block', 'test_page_test', 'contextual');
 
   protected $big_user;
   protected $std_user;
@@ -158,7 +159,6 @@ function addCustomMenu() {
     $this->assertText($label, 'Menu created');
 
     // Enable the custom menu block.
-    $menu_name = 'menu-' . $menu_name; // Drupal prepends the name with 'menu-'.
     // Confirm that the custom menu block is available.
     $this->drupalGet('admin/structure/block/list/block_plugin_ui:' . config('system.theme')->get('default') . '/add');
     $this->assertText($label);
@@ -210,9 +210,33 @@ function doMenuTests($menu_name) {
     $item1 = $this->addMenuLink(0, 'node/' . $node1->nid, $menu_name);
     $item2 = $this->addMenuLink($item1['mlid'], 'node/' . $node2->nid, $menu_name, FALSE);
     $item3 = $this->addMenuLink($item2['mlid'], 'node/' . $node3->nid, $menu_name);
-    $this->assertMenuLink($item1['mlid'], array('depth' => 1, 'has_children' => 1, 'p1' => $item1['mlid'], 'p2' => 0));
-    $this->assertMenuLink($item2['mlid'], array('depth' => 2, 'has_children' => 1, 'p1' => $item1['mlid'], 'p2' => $item2['mlid'], 'p3' => 0));
-    $this->assertMenuLink($item3['mlid'], array('depth' => 3, 'has_children' => 0, 'p1' => $item1['mlid'], 'p2' => $item2['mlid'], 'p3' => $item3['mlid'], 'p4' => 0));
+    $this->assertMenuLink($item1['mlid'], array(
+      'depth' => 1,
+      'has_children' => 1,
+      'p1' => $item1['mlid'],
+      'p2' => 0,
+      // We assert the language code here to make sure that the language
+      // selection element degrades gracefully without Language module.
+      'langcode' => 'site_default',
+    ));
+    $this->assertMenuLink($item2['mlid'], array(
+      'depth' => 2, 'has_children' => 1,
+      'p1' => $item1['mlid'],
+      'p2' => $item2['mlid'],
+      'p3' => 0,
+      // See above.
+      'langcode' => 'site_default',
+    ));
+    $this->assertMenuLink($item3['mlid'], array(
+      'depth' => 3,
+      'has_children' => 0,
+      'p1' => $item1['mlid'],
+      'p2' => $item2['mlid'],
+      'p3' => $item3['mlid'],
+      'p4' => 0,
+      // See above.
+      'langcode' => 'site_default'
+    ));
 
     // Verify menu links.
     $this->verifyMenuLink($item1, $node1);
@@ -222,8 +246,23 @@ function doMenuTests($menu_name) {
     // Add more menu links.
     $item4 = $this->addMenuLink(0, 'node/' . $node4->nid, $menu_name);
     $item5 = $this->addMenuLink($item4['mlid'], 'node/' . $node5->nid, $menu_name);
-    $this->assertMenuLink($item4['mlid'], array('depth' => 1, 'has_children' => 1, 'p1' => $item4['mlid'], 'p2' => 0));
-    $this->assertMenuLink($item5['mlid'], array('depth' => 2, 'has_children' => 0, 'p1' => $item4['mlid'], 'p2' => $item5['mlid'], 'p3' => 0));
+    $this->assertMenuLink($item4['mlid'], array(
+      'depth' => 1,
+      'has_children' => 1,
+      'p1' => $item4['mlid'],
+      'p2' => 0,
+      // See above.
+      'langcode' => 'site_default'
+    ));
+    $this->assertMenuLink($item5['mlid'], array(
+      'depth' => 2,
+      'has_children' => 0,
+      'p1' => $item4['mlid'],
+      'p2' => $item5['mlid'],
+      'p3' => 0,
+      // See above.
+      'langcode' => 'site_default'
+    ));
 
     // Modify menu links.
     $this->modifyMenuLink($item1);
@@ -235,11 +274,52 @@ function doMenuTests($menu_name) {
 
     // Move link and verify that descendants are updated.
     $this->moveMenuLink($item2, $item5['mlid'], $menu_name);
-    $this->assertMenuLink($item1['mlid'], array('depth' => 1, 'has_children' => 0, 'p1' => $item1['mlid'], 'p2' => 0));
-    $this->assertMenuLink($item4['mlid'], array('depth' => 1, 'has_children' => 1, 'p1' => $item4['mlid'], 'p2' => 0));
-    $this->assertMenuLink($item5['mlid'], array('depth' => 2, 'has_children' => 1, 'p1' => $item4['mlid'], 'p2' => $item5['mlid'], 'p3' => 0));
-    $this->assertMenuLink($item2['mlid'], array('depth' => 3, 'has_children' => 1, 'p1' => $item4['mlid'], 'p2' => $item5['mlid'], 'p3' => $item2['mlid'], 'p4' => 0));
-    $this->assertMenuLink($item3['mlid'], array('depth' => 4, 'has_children' => 0, 'p1' => $item4['mlid'], 'p2' => $item5['mlid'], 'p3' => $item2['mlid'], 'p4' => $item3['mlid'], 'p5' => 0));
+    $this->assertMenuLink($item1['mlid'], array(
+      'depth' => 1,
+      'has_children' => 0,
+      'p1' => $item1['mlid'],
+      'p2' => 0,
+      // See above.
+      'langcode' => 'site_default'
+    ));
+    $this->assertMenuLink($item4['mlid'], array(
+      'depth' => 1,
+      'has_children' => 1,
+      'p1' => $item4['mlid'],
+      'p2' => 0,
+      // See above.
+      'langcode' => 'site_default'
+    ));
+    $this->assertMenuLink($item5['mlid'], array(
+      'depth' => 2,
+      'has_children' => 1,
+      'p1' => $item4['mlid'],
+      'p2' => $item5['mlid'],
+      'p3' => 0,
+      // See above.
+      'langcode' => 'site_default'
+    ));
+    $this->assertMenuLink($item2['mlid'], array(
+      'depth' => 3,
+      'has_children' => 1,
+      'p1' => $item4['mlid'],
+      'p2' => $item5['mlid'],
+      'p3' => $item2['mlid'],
+      'p4' => 0,
+      // See above.
+      'langcode' => 'site_default'
+    ));
+    $this->assertMenuLink($item3['mlid'], array(
+      'depth' => 4,
+      'has_children' => 0,
+      'p1' => $item4['mlid'],
+      'p2' => $item5['mlid'],
+      'p3' => $item2['mlid'],
+      'p4' => $item3['mlid'],
+      'p5' => 0,
+      // See above.
+      'langcode' => 'site_default'
+    ));
 
     // Add 102 menu links with increasing weights, then make sure the last-added
     // item's weight doesn't get changed because of the old hardcoded delta=50
@@ -395,7 +475,7 @@ function addMenuLink($plid = 0, $link = '<front>', $menu_name = 'tools', $expand
 
     $menu_links = entity_load_multiple_by_properties('menu_link', array('link_title' => $title));
     $menu_link = reset($menu_links);
-    $this->assertTrue('Menu link was found in database.');
+    $this->assertTrue($menu_link, 'Menu link was found in database.');
     $this->assertMenuLink($menu_link->id(), array('menu_name' => $menu_name, 'link_path' => $link, 'has_children' => 0, 'plid' => $plid));
 
     return $menu_link;
@@ -578,30 +658,6 @@ function enableMenuLink($item) {
   }
 
   /**
-   * Fetch the menu item from the database and compare it to the specified
-   * array.
-   *
-   * @param $mlid
-   *   Menu item id.
-   * @param $item
-   *   Array containing properties to verify.
-   */
-  function assertMenuLink($mlid, array $expected_item) {
-    // Retrieve menu link.
-    $item = entity_load('menu_link', $mlid);
-    $options = $item->options;
-    if (!empty($options['query'])) {
-      $item['link_path'] .= '?' . drupal_http_build_query($options['query']);
-    }
-    if (!empty($options['fragment'])) {
-      $item['link_path'] .= '#' . $options['fragment'];
-    }
-    foreach ($expected_item as $key => $value) {
-      $this->assertEqual($item[$key], $value, format_string('Parameter %key had expected value.', array('%key' => $key)));
-    }
-  }
-
-  /**
    * Get standard menu link.
    */
   private function getStandardMenuLink() {
diff --git a/core/modules/menu/lib/Drupal/menu/Tests/MenuWebTestBase.php b/core/modules/menu/lib/Drupal/menu/Tests/MenuWebTestBase.php
new file mode 100644
index 0000000..ecd92dd
--- /dev/null
+++ b/core/modules/menu/lib/Drupal/menu/Tests/MenuWebTestBase.php
@@ -0,0 +1,48 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\menu\Tests\MenuWebTestBase.
+ */
+ 
+namespace Drupal\menu\Tests;
+
+use Drupal\simpletest\WebTestBase;
+
+/**
+ * Defines a base class for menu web tests.
+ */
+class MenuWebTestBase extends WebTestBase {
+
+  /**
+   * Modules to enable.
+   *
+   * @var array
+   */
+  public static $modules = array('menu');
+
+  /**
+   * Fetch the menu item from the database and compare it to the specified
+   * array.
+   *
+   * @param $mlid
+   *   Menu item id.
+   * @param $item
+   *   Array containing properties to verify.
+   */
+  function assertMenuLink($mlid, array $expected_item) {
+    // Retrieve menu link.
+    $item = entity_load('menu_link', $mlid);
+    $options = $item->options;
+    if (!empty($options['query'])) {
+      $item['link_path'] .= '?' . \Drupal::urlGenerator()->httpBuildQuery($options['query']);
+    }
+    if (!empty($options['fragment'])) {
+      $item['link_path'] .= '#' . $options['fragment'];
+    }
+    foreach ($expected_item as $key => $value) {
+      $this->assertEqual($item[$key], $value, format_string('Parameter %key had expected value.', array('%key' => $key)));
+    }
+  }
+
+}
diff --git a/core/modules/menu_link/lib/Drupal/menu_link/MenuLinkFormController.php b/core/modules/menu_link/lib/Drupal/menu_link/MenuLinkFormController.php
index 9aa76d4..9a32679 100644
--- a/core/modules/menu_link/lib/Drupal/menu_link/MenuLinkFormController.php
+++ b/core/modules/menu_link/lib/Drupal/menu_link/MenuLinkFormController.php
@@ -7,10 +7,13 @@
 
 namespace Drupal\menu_link;
 
+use Drupal\Core\Entity\EntityControllerInterface;
 use Drupal\Core\Entity\EntityFormController;
 use Drupal\Core\Language\Language;
-use Drupal\Core\Entity\EntityControllerInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
 use Drupal\Core\Path\AliasManagerInterface;
+use Drupal\Core\Routing\UrlGenerator;
+use Drupal\menu_link\MenuLinkStorageControllerInterface;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
@@ -19,6 +22,13 @@
 class MenuLinkFormController extends EntityFormController implements EntityControllerInterface {
 
   /**
+   * The menu link storage controller.
+   *
+   * @var \Drupal\menu_link\MenuLinkStorageControllerInterface
+   */
+  protected $menuLinkStorageController;
+
+  /**
    * The path alias manager.
    *
    * @var \Drupal\Core\Path\AliasManagerInterface
@@ -26,6 +36,20 @@ class MenuLinkFormController extends EntityFormController implements EntityContr
   protected $pathAliasManager;
 
   /**
+   * The URL generator.
+   *
+   * @var \Drupal\Core\Routing\UrlGenerator
+   */
+  protected $urlGenerator;
+
+  /**
+   * The module handler
+   *
+   * @var \Drupal\Core\Extension\ModuleHandlerInterface
+   */
+  protected $moduleHandler;
+
+  /**
    * Constructs a new MenuLinkFormController object.
    *
    * @param string $operation
@@ -33,10 +57,12 @@ class MenuLinkFormController extends EntityFormController implements EntityContr
    * @param \Drupal\Core\Path\AliasManagerInterface $path_alias_manager
    *   The path alias manager.
    */
-  public function __construct($operation, AliasManagerInterface $path_alias_manager) {
+  public function __construct($operation, MenuLinkStorageControllerInterface $menu_link_storage_controller, AliasManagerInterface $path_alias_manager, UrlGenerator $url_generator, ModuleHandlerInterface $module_handler) {
     parent::__construct($operation);
-
+    $this->menuLinkStorageController = $menu_link_storage_controller;
     $this->pathAliasManager = $path_alias_manager;
+    $this->urlGenerator = $url_generator;
+    $this->moduleHandler = $module_handler;
   }
 
   /**
@@ -45,7 +71,10 @@ public function __construct($operation, AliasManagerInterface $path_alias_manage
   public static function createInstance(ContainerInterface $container, $entity_type, array $entity_info, $operation = NULL) {
     return new static(
       $operation,
-      $container->get('path.alias_manager.cached')
+      $container->get('plugin.manager.entity')->getStorageController('menu_link'),
+      $container->get('path.alias_manager.cached'),
+      $container->get('url_generator'),
+      $container->get('module_handler')
     );
   }
 
@@ -86,7 +115,7 @@ public function form(array $form, array &$form_state) {
     // $base_path.
     $path = $menu_link->link_path;
     if (isset($menu_link->options['query'])) {
-      $path .= '?' . drupal_http_build_query($menu_link->options['query']);
+      $path .= '?' . $this->urlGenerator->httpBuildQuery($menu_link->options['query']);
     }
     if (isset($menu_link->options['fragment'])) {
       $path .= '#' . $menu_link->options['fragment'];
@@ -145,8 +174,7 @@ public function form(array $form, array &$form_state) {
     );
 
     // Get number of items in menu so the weight selector is sized appropriately.
-    $delta = \Drupal::entityManager()
-      ->getStorageController('menu_link')->countMenuLinks($menu_link->menu_name);
+    $delta = $this->menuLinkStorageController->countMenuLinks($menu_link->menu_name);
     $form['weight'] = array(
       '#type' => 'weight',
       '#title' => t('Weight'),
@@ -156,11 +184,30 @@ public function form(array $form, array &$form_state) {
       '#description' => t('Optional. In the menu, the heavier links will sink and the lighter links will be positioned nearer the top.'),
     );
 
+    // Set up defaults for menu links that already exist.
+    $default_langcode = $menu_link->langcode;
+    $language_show = FALSE;g
+
+    if ($menu_link->isNew()) {
+      // Adding a new menu link, use the default from language settings config.
+      if ($this->moduleHandler->moduleExists('language')) {
+        $language_configuration = language_get_default_configuration('menu_link', $menu_link->bundle());
+        $default_langcode = $language_configuration['langcode'];
+        $language_show = $language_configuration['language_show'];
+      }
+      // If there are no default language settings for menu links of this menu,
+      // default to the language of the menu.
+      else {
+        $default_langcode = entity_load('menu', $menu_link->menu_name)->langcode;
+      }
+    }
+
     $form['langcode'] = array(
       '#type' => 'language_select',
       '#title' => t('Language'),
       '#languages' => Language::STATE_ALL,
-      '#default_value' => $menu_link->langcode,
+      '#default_value' => $default_langcode,
+      '#access' => $language_show,
     );
 
     return parent::form($form, $form_state, $menu_link);
diff --git a/core/modules/menu_link/lib/Drupal/menu_link/Plugin/Core/Entity/MenuLink.php b/core/modules/menu_link/lib/Drupal/menu_link/Plugin/Core/Entity/MenuLink.php
index f32844f..c3cd2fe 100644
--- a/core/modules/menu_link/lib/Drupal/menu_link/Plugin/Core/Entity/MenuLink.php
+++ b/core/modules/menu_link/lib/Drupal/menu_link/Plugin/Core/Entity/MenuLink.php
@@ -36,6 +36,7 @@
  *   static_cache = FALSE,
  *   base_table = "menu_links",
  *   uri_callback = "menu_link_uri",
+ *   translatable = TRUE,
  *   entity_keys = {
  *     "id" = "mlid",
  *     "label" = "link_title",