diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8c3dc7a9e..dac852109 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,7 +2,7 @@
 
 ## Current (in progress)
 
-- Nothing yet
+- Use beta admin as default [#621](https://github.com/datagouv/udata-front/pull/621)
 
 ## 6.1.1 (2025-01-31)
 
diff --git a/udata_front/frontend/helpers.py b/udata_front/frontend/helpers.py
index 6528d1fcd..996f53d85 100644
--- a/udata_front/frontend/helpers.py
+++ b/udata_front/frontend/helpers.py
@@ -109,6 +109,23 @@ def in_url(*args, **kwargs):
     )
 
 
+@front.app_template_global()
+def beta_admin_url_for(path, fallback_path, **kwargs):
+    '''
+    A helper to route to the new admin if available.
+    If NEW_ADMIN_URL is defined, we build the target url pointing to it using `path`.
+    Else we route to the old admin using `fallback_path`.
+    Kwargs are forwarded as as params in the first case
+    and as arguments of url_for in the seconde case.
+    '''
+    if current_app.config['NEW_ADMIN_URL']:
+        scheme, netloc, path, query, fragments = urlsplit(
+            current_app.config['NEW_ADMIN_URL'] + path
+        )
+        return urlunsplit((scheme, netloc, path, url_encode(kwargs), fragments))
+    return url_for('admin.index', path=fallback_path, **kwargs)
+
+
 @front.app_template_filter()
 @pass_context
 def placeholder(ctx, url, name='default', external=False):
diff --git a/udata_front/theme/gouvfr/templates/dataset/display.html b/udata_front/theme/gouvfr/templates/dataset/display.html
index 3485ce1fb..c96f6682b 100644
--- a/udata_front/theme/gouvfr/templates/dataset/display.html
+++ b/udata_front/theme/gouvfr/templates/dataset/display.html
@@ -56,7 +56,7 @@
     <div class="fr-col-auto fr-ml-3v">
         <a
             class="fr-btn fr-btn--sm fr-btn--secondary fr-btn--secondary-warning-425 fr-icon-pencil-line fr-btn--icon-left"
-            href="{{ url_for('admin.index', path='dataset/{id}/'.format(id=dataset.id)) }}"
+            href="{{ beta_admin_url_for(path='datasets/{id}/'.format(id=dataset.id), fallback_path='dataset/{id}/'.format(id=dataset.id)) }}"
         >
             {{ _('Edit') }}
         </a>
@@ -359,7 +359,7 @@ <h2 class="fr-mt-4w fr-mb-1w subtitle subtitle--uppercase">
                             <p>
                                 <a
                                     class="fr-btn"
-                                    href="{{ url_for('admin.index', path='dataset/{id}/'.format(id=dataset.id)) }}"
+                                    href="{{ beta_admin_url_for(path='datasets/{id}/'.format(id=dataset.id), fallback_path='dataset/{id}/'.format(id=dataset.id)) }}"
                                 >
                                     {{ _('Add a file') }}
                                 </a>
@@ -399,7 +399,7 @@ <h2 class="subtitle subtitle--uppercase fr-col">{{ ngettext('%(num)d Reuse', '%(
                 {% if not read_only_mode %}
                     <div class="fr-col-12 fr-col-sm-6 fr-col-md-5 fr-col-lg-4 text-align-right">
                         <a class="fr-btn fr-btn--sm fr-btn--secondary fr-btn--secondary-grey-500 fr-icon-add-line fr-btn--icon-left"
-                            href="{{ url_for('admin.index', path='reuse/new/', **{'dataset_id': dataset.id}) }}">
+                            href="{{ beta_admin_url_for(path='reuses/new/', fallback_path='reuse/new/', **{'dataset_id': dataset.id}) }}">
                             {{ _('Add a reuse') }}
                         </a>
                     </div>
@@ -422,7 +422,7 @@ <h2 class="subtitle subtitle--uppercase fr-col">{{ ngettext('%(num)d Reuse', '%(
                     <p>
                         <a
                             class="fr-btn"
-                            href="{{ url_for('admin.index', path='reuse/new/', **{'dataset_id': dataset.id}) }}"
+                            href="{{ beta_admin_url_for(path='reuses/new/', fallback_path='reuse/new/', **{'dataset_id': dataset.id}) }}"
                         >
                             {{ _('Publish a reuse') }}
                         </a>
diff --git a/udata_front/theme/gouvfr/templates/header.html b/udata_front/theme/gouvfr/templates/header.html
index 40cf26968..bff21bcb5 100644
--- a/udata_front/theme/gouvfr/templates/header.html
+++ b/udata_front/theme/gouvfr/templates/header.html
@@ -3,14 +3,15 @@
 {% set banner_activated = config['BANNER_ACTIVATED'] %}
 {% set read_only_mode = config['READ_ONLY_MODE'] %}
 {% set next_url = url_for(request.endpoint, **request.view_args) if not request.routing_exception else url_for('site.home') %}
-{% set publish_items = [
-    {'icon': 'fr-icon-database-line', 'label': _('A dataset'), 'url': url_for('beta.datasets-new')},
-    {'icon': 'fr-icon-code-s-slash-line', 'label': _('An API'), 'url': url_for('beta.dataservices-new')},
-    {'icon': 'fr-icon-line-chart-line', 'label': _('A reuse'), 'url': url_for('beta.reuses-new')},
-    {'icon': 'fr-icon-server-line', 'label': _('A harvester'), 'url': url_for('admin.index', path='harvester/new/')},
-    {'icon': 'fr-icon-government-line', 'label': _('An organization'), 'url': url_for('beta.organizations-new')},
-] + ([{'icon': 'fr-icon-article-line', 'label': _('A post'), 'url': url_for('admin.index', path='post/new/')}] if current_user.sysadmin else [])
-%}
+
+{% set dataset_item = [{'icon': 'fr-icon-database-line', 'label': _('A dataset'), 'url': beta_admin_url_for(path='datasets/new', fallback_path='dataset/new/')}] %}
+{% set dataservice_item = [{'icon': 'fr-icon-database-line', 'label': _('An API'), 'url': beta_admin_url_for(path='dataservices/new', fallback_path='')}] if config.NEW_ADMIN_URL else [] %}
+{% set reuse_item = [{'icon': 'fr-icon-database-line', 'label': _('A reuse'), 'url': beta_admin_url_for(path='reuses/new', fallback_path='reuse/new/')}] %}
+{% set harvester_item = [{'icon': 'fr-icon-database-line', 'label': _('A harvester'), 'url': beta_admin_url_for(path='harvesters/new', fallback_path='harvester/new/')}] %}
+{% set organization_item = [{'icon': 'fr-icon-database-line', 'label': _('A organization'), 'url': beta_admin_url_for(path='organizations/new', fallback_path='organization/new/')}] %}
+{% set post_item = [{'icon': 'fr-icon-database-line', 'label': _('A post'), 'url': beta_admin_url_for(path='posts/new', fallback_path='post/new/')}] if current_user.sysadmin else [] %}
+
+{% set publish_items = dataset_item + dataservice_item + reuse_item + harvester_item + organization_item + post_item %}
 
 <header role="banner" class="fr-header">
     {% if read_only_mode %}
@@ -90,7 +91,7 @@
                                 </li>
                                 <li>
                                     <a
-                                        href="{{ url_for('admin.index') }}"
+                                        href="{{ url_for('beta.beta-admin') }}"
                                         class="fr-btn fr-icon-svg fr-icon--sm"
                                     >
                                         <span class="fr-mr-1w fr-grid-row">
diff --git a/udata_front/theme/gouvfr/templates/organization/display.html b/udata_front/theme/gouvfr/templates/organization/display.html
index b83cbf2b9..14cbb28ff 100644
--- a/udata_front/theme/gouvfr/templates/organization/display.html
+++ b/udata_front/theme/gouvfr/templates/organization/display.html
@@ -51,7 +51,7 @@
 {% if can_edit %}
     <a
         class="fr-ml-2w fr-btn fr-btn--sm fr-btn--secondary fr-btn--secondary-grey-500 fr-icon-pencil-line fr-btn--icon-left"
-        href="{{ url_for('admin.index', path='organization/{id}/'.format(id=org.id)) }}"
+        href="{{ beta_admin_url_for(path='organizations/{id}/profile/'.format(id=org.id), fallback_path='organization/{id}/'.format(id=org.id)) }}"
     >
         {{ _('Modify organization') }}
     </a>
diff --git a/udata_front/theme/gouvfr/templates/reuse/display.html b/udata_front/theme/gouvfr/templates/reuse/display.html
index 17455c605..92e96efe7 100644
--- a/udata_front/theme/gouvfr/templates/reuse/display.html
+++ b/udata_front/theme/gouvfr/templates/reuse/display.html
@@ -59,7 +59,7 @@
     <div class="fr-col-auto fr-ml-3v">
         <a
             class="fr-btn fr-btn--sm fr-btn--secondary fr-btn--secondary-warning-425 fr-icon-pencil-line fr-btn--icon-left"
-            href="{{ url_for('admin.index', path='reuse/{id}/'.format(id=reuse.id)) }}"
+            href="{{ beta_admin_url_for(path='reuses/{id}/'.format(id=reuse.id), fallback_path='reuse/{id}/'.format(id=reuse.id)) }}"
         >
             {{ _('Edit') }}
         </a>
diff --git a/udata_front/theme/gouvfr/templates/user/base.html b/udata_front/theme/gouvfr/templates/user/base.html
index edf311908..b77cf07f3 100644
--- a/udata_front/theme/gouvfr/templates/user/base.html
+++ b/udata_front/theme/gouvfr/templates/user/base.html
@@ -47,7 +47,7 @@
     {% else %}
     <a
         class="fr-ml-2w fr-btn fr-btn--sm fr-btn--secondary fr-btn--secondary-warning-425 fr-icon-pencil-line fr-btn--icon-left"
-        href="{{ url_for('admin.index', path='me') }}"
+        href="{{ beta_admin_url_for(path='me/profile', fallback_path='me') }}"
     >
         {{ _('Edit') }}
     </a>