diff --git a/site/source/components/App.tsx b/site/source/components/App.tsx
index b8cc1f9d3..18c3610ef 100644
--- a/site/source/components/App.tsx
+++ b/site/source/components/App.tsx
@@ -3,7 +3,7 @@ import { FallbackRender } from '@sentry/react/types/errorboundary'
 import rules from 'modele-social'
 import { ComponentProps, StrictMode, useMemo } from 'react'
 import { useTranslation } from 'react-i18next'
-import { Navigate, Route, Routes } from 'react-router-dom'
+import { Route, Routes } from 'react-router-dom'
 import styled, { css } from 'styled-components'
 
 import Route404 from '@/components/Route404'
@@ -37,6 +37,7 @@ import Integration from '@/pages/integration/index'
 import { useSitePaths } from '@/sitePaths'
 
 import Provider, { ProviderProps } from './Provider'
+import Redirections from './Redirections'
 
 type RootProps = {
 	basename: ProviderProps['basename']
@@ -71,51 +72,6 @@ export default function Root({
 	)
 }
 
-const Redirections = ({ children }: { children: React.ReactNode }) => {
-	const { absoluteSitePaths } = useSitePaths()
-	const redirections = [
-		{
-			paths: ['/stats'],
-			to: absoluteSitePaths.stats,
-		},
-		{
-			paths: ['/plan-de-site', '/site-map'],
-			to: absoluteSitePaths.plan,
-		},
-		{
-			paths: [
-				'/gérer/aide-declaration-independants/beta',
-				'/manage/declaration-aid-independent/beta',
-			],
-			to: absoluteSitePaths.assistants.déclarationIndépendant.index,
-		},
-		{
-			paths: [
-				'/gérer/aide-declaration-independants',
-				'/manage/declaration-aid-independent',
-			],
-			to: absoluteSitePaths.assistants[
-				'déclaration-charges-sociales-indépendant'
-			],
-		},
-	] satisfies { paths: string[]; to: string }[]
-
-	return (
-		<Routes>
-			{redirections.flatMap(({ paths, to }) =>
-				paths.map((path) => (
-					<Route
-						key={path}
-						path={path}
-						element={<Navigate to={to} replace />}
-					/>
-				))
-			)}
-			<Route path="*" element={children} />
-		</Routes>
-	)
-}
-
 const Router = () => {
 	const engine = useEngine()
 
diff --git a/site/source/components/Redirections.tsx b/site/source/components/Redirections.tsx
new file mode 100644
index 000000000..ee25fa4d0
--- /dev/null
+++ b/site/source/components/Redirections.tsx
@@ -0,0 +1,85 @@
+import { useMemo } from 'react'
+import { Navigate, Route, Routes, useLocation } from 'react-router-dom'
+
+import { useSitePaths } from '@/sitePaths'
+
+interface Props {
+	children: React.ReactNode
+}
+
+export default function Redirections({ children }: Props) {
+	const { absoluteSitePaths } = useSitePaths()
+	const { pathname } = useLocation()
+
+	const redirections = useMemo(() => {
+		return [
+			{
+				paths: ['/stats'],
+				to: absoluteSitePaths.stats,
+			},
+			{
+				paths: ['/plan-de-site', '/site-map'],
+				to: absoluteSitePaths.plan,
+			},
+			{
+				paths: [
+					'/gérer/aide-declaration-independants/beta',
+					'/manage/declaration-aid-independent/beta',
+				],
+				to: absoluteSitePaths.assistants.déclarationIndépendant.index,
+			},
+			{
+				paths: [
+					'/gérer/aide-declaration-independants',
+					'/manage/declaration-aid-independent',
+				],
+				to: absoluteSitePaths.assistants[
+					'déclaration-charges-sociales-indépendant'
+				],
+			},
+			{
+				paths: [
+					'/gérer/aide-declaration-independants',
+					'/manage/declaration-aid-independent',
+				],
+				to: absoluteSitePaths.assistants[
+					'déclaration-charges-sociales-indépendant'
+				],
+			},
+			{
+				paths: ['/gérer/*', '/manage/*'],
+				to: decodeURI(pathname).replace(
+					/^\/(gérer|manage)/,
+					absoluteSitePaths.assistants.index
+				),
+			},
+			{
+				paths: ['/créer/*', '/create/*'],
+				to: decodeURI(pathname).replace(
+					/^\/(créer|create)/,
+					absoluteSitePaths.assistants['choix-du-statut'].index
+				),
+			},
+		] satisfies { paths: string[]; to: string }[]
+	}, [
+		absoluteSitePaths.assistants,
+		absoluteSitePaths.plan,
+		absoluteSitePaths.stats,
+		pathname,
+	])
+
+	return (
+		<Routes>
+			{redirections.flatMap(({ paths, to }) =>
+				paths.map((path) => (
+					<Route
+						key={path}
+						path={path}
+						element={<Navigate to={to} replace />}
+					/>
+				))
+			)}
+			<Route path="*" element={children} />
+		</Routes>
+	)
+}
diff --git a/site/source/pages/assistants/index.tsx b/site/source/pages/assistants/index.tsx
index 6f5acb405..80f3f16bb 100644
--- a/site/source/pages/assistants/index.tsx
+++ b/site/source/pages/assistants/index.tsx
@@ -1,9 +1,8 @@
 import { Trans } from 'react-i18next'
-import { Route, Routes, useLocation } from 'react-router-dom'
+import { Navigate, Route, Routes, useLocation } from 'react-router-dom'
 
 import { TrackChapter } from '@/components/ATInternetTracking'
 import PageData from '@/components/PageData'
-import Route404 from '@/components/Route404'
 import { ScrollToTop } from '@/components/utils/Scroll'
 import { Link } from '@/design-system/typography/link'
 import useSimulatorsData from '@/hooks/useSimulatorsData'
@@ -29,7 +28,13 @@ export default function Gérer() {
 			<ScrollToTop key={location.pathname} />
 
 			<Routes>
-				{/* <Route index element={<Home />} />  Navigate to /simu-et-assist */}
+				{/* TODO Navigate to /simu-et-assist */}
+				<Route
+					index
+					element={
+						<Navigate to={absoluteSitePaths.simulateurs.index} replace />
+					}
+				/>
 				<Route
 					path={relativeSitePaths.assistants.sécuritéSociale}
 					element={
@@ -72,7 +77,18 @@ export default function Gérer() {
 							}
 						/>
 					))}
-				<Route path="*" element={<Route404 />} />
+				<Route
+					path="*"
+					element={
+						<Navigate
+							to={decodeURI(location.pathname).replace(
+								absoluteSitePaths.assistants.index,
+								absoluteSitePaths.assistants['pour-mon-entreprise'].index
+							)}
+							replace
+						/>
+					}
+				/>
 			</Routes>
 		</>
 	)