diff --git a/actionpack/lib/action_dispatch/routing.rb b/actionpack/lib/action_dispatch/routing.rb
index 2c3623cfa5e6f58863856021f570a47f338b460b..3d9084a27e9fa3b2c946081fbcb7d3096979e383 100644
--- a/actionpack/lib/action_dispatch/routing.rb
+++ b/actionpack/lib/action_dispatch/routing.rb
@@ -220,11 +220,11 @@ module Routing
     autoload :RouteSet, 'action_dispatch/routing/route_set'
     autoload :UrlFor, 'action_dispatch/routing/url_for'
 
-    SEPARATORS = %w( / . ? )
-    HTTP_METHODS = [:get, :head, :post, :put, :delete, :options]
+    SEPARATORS = %w( / . ? ) #:nodoc:
+    HTTP_METHODS = [:get, :head, :post, :put, :delete, :options] #:nodoc:
 
     # A helper module to hold URL related helpers.
-    module Helpers
+    module Helpers #:nodoc:
       include ActionController::PolymorphicRoutes
     end
   end
diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index 5a3868e1d453693ab01a12d55da2d1aefb749997..39260f7ff9236e6eed972078aab38f8cedbd54dc 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -3,7 +3,7 @@
 module ActionDispatch
   module Routing
     class Mapper
-      class Constraints
+      class Constraints #:nodoc:
         def self.new(app, constraints = [])
           if constraints.any?
             super(app, constraints)
@@ -31,7 +31,7 @@ def call(env)
         end
       end
 
-      class Mapping
+      class Mapping #:nodoc:
         IGNORE_OPTIONS = [:to, :as, :controller, :action, :via, :on, :constraints, :defaults, :only, :except, :anchor]
 
         def initialize(set, scope, args)
@@ -179,7 +179,7 @@ def self.normalize_path(path)
       end
 
       module Base
-        def initialize(set)
+        def initialize(set) #:nodoc:
           @set = set
         end
 
@@ -251,7 +251,7 @@ def map_method(method, *args, &block)
       end
 
       module Scoping
-        def initialize(*args)
+        def initialize(*args) #:nodoc:
           @scope = {}
           super
         end
@@ -371,7 +371,7 @@ def merge_options_scope(parent, child)
       end
 
       module Resources
-        CRUD_ACTIONS = [:index, :show, :create, :update, :destroy]
+        CRUD_ACTIONS = [:index, :show, :create, :update, :destroy] #:nodoc:
 
         class Resource #:nodoc:
           def self.default_actions
@@ -462,7 +462,7 @@ def member_name
           end
         end
 
-        def initialize(*args)
+        def initialize(*args) #:nodoc:
           super
           @scope[:resources_path_names] = @set.resources_path_names
         end
@@ -628,7 +628,7 @@ def match(*args)
         end
 
         protected
-          def parent_resource
+          def parent_resource #:nodoc:
             @scope[:scope_level_resource]
           end
 
diff --git a/actionpack/lib/action_dispatch/routing/route_set.rb b/actionpack/lib/action_dispatch/routing/route_set.rb
index bb689beed99324b35a42edbd7a573a49fd09739a..c8e4371bb7fe532c0cfe1271b0d599d2b99a9f5c 100644
--- a/actionpack/lib/action_dispatch/routing/route_set.rb
+++ b/actionpack/lib/action_dispatch/routing/route_set.rb
@@ -11,7 +11,7 @@ class RouteSet #:nodoc:
 
       PARAMETERS_KEY = 'action_dispatch.request.path_parameters'
 
-      class Dispatcher
+      class Dispatcher #:nodoc:
         def initialize(options={})
           @defaults = options[:defaults]
           @glob_param = options.delete(:glob)
@@ -281,7 +281,7 @@ def add_route(app, conditions = {}, requirements = {}, defaults = {}, name = nil
         route
       end
 
-      class Generator
+      class Generator #:nodoc:
         attr_reader :options, :recall, :set, :script_name, :named_route
 
         def initialize(options, recall, set, extras = false)