diff --git a/modules/tide_site/src/EventSubscriber/TideSiteRequestEventSubscriber.php b/modules/tide_site/src/EventSubscriber/TideSiteRequestEventSubscriber.php
index 5e6e85488..68e80a38a 100644
--- a/modules/tide_site/src/EventSubscriber/TideSiteRequestEventSubscriber.php
+++ b/modules/tide_site/src/EventSubscriber/TideSiteRequestEventSubscriber.php
@@ -109,6 +109,25 @@ public function onRequestAddSiteFilter(RequestEvent $event) {
       $path = $api_helper->getRequestedPath($request);
       // Only prefix non-homepage and unrouted path.
       if ($path !== '/') {
+        // If the path already has a site prefix, return a redirect response
+        // in the same format as Drupal redirect module so the FE can handle
+        // it with its existing redirect logic.
+        if ($this->helper->hasSitePrefix($path)) {
+          $clean_path = preg_replace('#^/site-\d+/#', '/', $path);
+          $this->setRedirectRouteResponse($event, $request, $clean_path);
+          return;
+        }
+        // If the path is an internal node path (e.g. /node/1234), resolve
+        // to its alias and return a redirect response.
+        if (preg_match('#^/node/\d+$#', $path)) {
+          /** @var \Drupal\path_alias\AliasManagerInterface $alias_manager */
+          $alias_manager = $this->container->get('path_alias.manager');
+          $alias = $alias_manager->getAliasByPath($path);
+          if ($alias && $alias !== $path) {
+            $this->setRedirectRouteResponse($event, $request, $alias);
+            return;
+          }
+        }
         try {
           $url = Url::fromUri('internal:' . $path);
           if (!$url->isRouted() && !$this->helper->hasSitePrefix($path)) {
@@ -280,6 +299,38 @@ protected function setEventErrorResponse(RequestEvent $event, $error_message, $c
     $event->stopPropagation();
   }
 
+  /**
+   * Set a redirect route JSON response matching Drupal redirect module format.
+   */
+  protected function setRedirectRouteResponse(RequestEvent $event, Request $request, $redirect_url, $status_code = '301') {
+    $self_href = $request->getSchemeAndHttpHost() . $request->getRequestUri();
+    /** @var \Drupal\Component\Uuid\UuidInterface $uuid_service */
+    $uuid_service = $this->container->get('uuid');
+    $json_response = [
+      'data' => [
+        'type' => 'route',
+        'links' => [
+          'self' => [
+            'href' => $self_href,
+          ],
+        ],
+        'id' => $uuid_service->generate(),
+        'attributes' => [
+          'status_code' => $status_code,
+          'redirect_url' => $redirect_url,
+          'redirect_type' => 'internal',
+        ],
+      ],
+      'links' => [
+        'self' => [
+          'href' => $self_href,
+        ],
+      ],
+    ];
+    $response = new JsonResponse($json_response);
+    $event->setResponse($response);
+  }
+
   /**
    * Helper to build field name for provided entity type.
    *