Route nationale française 42

Route nationale 42
La D933 (ex-RN42) à Oxelaëre (59)© Raphaël Lemaire
Localisation
Pays	France
Région	Hauts-de-France
Exploitation
Concessionnaire	Sanef
Gestionnaire	DIR Nord
Caractéristiques de 1824 à 1973
Itinéraire	Lille - Cassel - Boulogne-sur-Mer
Longueur	124 km
Caractéristiques de 1973 à 2006
Itinéraire	Bailleul - Boulogne-sur-Mer
Longueur	89 km
Caractéristiques actuelles
Itinéraire	Lumbres - Saint-Martin-Boulogne (A26 - A16)
Longueur	41 km

Présentation

• La route nationale 42, ou RN42, est une route nationale française reliant actuellement Lumbres (A26) à Saint-Martin-Boulogne (A16).

Historique

Généralités

• A sa création, en 1824, elle est décrite comme étant la route de Lille à Boulogne-sur-Mer. Elle succède alors à la Route impériale 55.
• Avant 1973, La RN42 reliait donc Lille à Boulogne-sur-Mer, en passant par Cassel.
• Mais avec la réforme de 1972, son tracé a été changé entre Bailleul et Saint-Omer, en la faisant passer un peu plus au sud, par Hazebrouck, en reprenant le tracé de l'ex-N344.
• Cet ancien tracé et la section compris entre Lille et Bailleul ont été tout deux déclassés et sont devenus l'actuelle D933.
• En 1978, la RN42 est par conséquent définie comme la route de Lille, A. 25 à Météren, à Boulogne-sur-Mer, N. 1.
• Avec la réforme de 2005, le tronçon entre Bailleul et Saint-Omer a été à son tour déclassé. Il est devenu D942 dans le Pas-de-Calais et D642 dans le Nord.
• Depuis le 1^er janvier 2017 son exploitation est assurée par la Métropole européenne de Lille entre Lille et Armentières. En conséquence, elle devenue une route métropolitaine sous l'appellation M933, les cartouches ayant été changés sur le terrain en 2018.

Construction

• Rectification de Wez-Macquart : 1846.
• Traversée d'Arques : 1838 (réparations).
• Rectification au Nord de Saint-Omer : 1897 (suite au démantèlement des fortifications).
• Section Saint-Omer - Boulogne-sur-Mer : 1843 (réparations).

Futur

• L'intégralité du tracé de la RN42 doit être doublé à terme entre Boulogne-sur-Mer, Saint-Omer et Bailleul.
• Les aménagements réalisés ou prévus traduisent une absence d'homogénéité qui nuit à la lisibilité d'un parcours transversal essentiel pour la région des Hauts-de-France :
  • Entre Boulogne-sur-Mer (A16) et Setques (A26), l'axe actuel aurait dû à terme être transformé en autoroute A260 sur 41 km. Ce projet est désormais abandonné et les sections pas encore aménagées en voie express pourraient recevoir des carrefours giratoires inadaptés au trafic intense supporté par cet axe.
  • Le tronçon entre Lumbres (D225) et Setques (A26) a été concédé à la Sanef en 2015 pour être mis aux normes autoroutières. Un demi-échangeur aurait dû être construit au Sud de l'actuel diffuseur de Setques pour permettre une connexion directe à l'A26. Ce projet, affiné au terme de plusieurs phases d'études et de concertation, a reçu un avis favorable suite à l'enquête publique. Il est cependant abandonné unilatéralement par l'Etat en février 2023, sans justification précise.
  • Entre Setques (A26) et Saint-Omer (D943), une 2x2 voies surchargée de carrefours giratoires (alors que la liaison fait à peine 6 km) a été poussivement aménagée.
  • Saint-Omer est dévié depuis les années 1980-1990 par une voie express à 2x2 voies avec carrefours dénivelés sur 10 km.
  • De Saint-Omer (D943) et Arques à Bailleul (A25), le doublement est progressivement réalisé (cf. plaquette). L'option retenue privilégie un aménagement progressif avec de nombreux carrefours giratoires sur un axe départementalisé en 2006. Le chantier du contournement des communes de Borre et de Pradelles est achevé le 30 juin 2014 tandis que le restant de l'itinéraire attend d'être doublé et sécurisé.

Autour de la route

• Parc naturel régional des Caps Marais d'Opale

Tracés historiques

Chargement de la carte...

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class=\"mw-parser-output\"\u003E\u003Cp\u003ERN42 Lumbres - Setques (Sanef)\n\u003C/p\u003E\u003C/div\u003E","title":"RN42 Lumbres - Setques (Sanef)\n","link":"","strokeColor":"#0000FF","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":50.714543,"lon":2.106722},{"lat":50.715052,"lon":2.108302},{"lat":50.715467,"lon":2.1096},{"lat":50.715698,"lon":2.110458},{"lat":50.715895,"lon":2.111338},{"lat":50.716146,"lon":2.112572},{"lat":50.71635,"lon":2.113795},{"lat":50.716479,"lon":2.114878},{"lat":50.716567,"lon":2.115941},{"lat":50.716628,"lon":2.116928},{"lat":50.716656,"lon":2.117915},{"lat":50.716662,"lon":2.118805},{"lat":50.716628,"lon":2.120082},{"lat":50.71654,"lon":2.121369},{"lat":50.716017,"lon":2.130156},{"lat":50.715195,"lon":2.143567},{"lat":50.715127,"lon":2.144608},{"lat":50.715114,"lon":2.145659},{"lat":50.71512,"lon":2.146636},{"lat":50.715175,"lon":2.147483},{"lat":50.715263,"lon":2.148739},{"lat":50.715406,"lon":2.149876},{"lat":50.715569,"lon":2.150863},{"lat":50.715759,"lon":2.151732},{"lat":50.716003,"lon":2.152751},{"lat":50.716309,"lon":2.153824},{"lat":50.716764,"lon":2.155197},{"lat":50.717505,"lon":2.157472},{"lat":50.719142,"lon":2.162472},{"lat":50.719672,"lon":2.164092},{"lat":50.720296,"lon":2.166162}]},{"text":"","title":"","link":"","strokeColor":"#B07030","strokeOpacity":"1","strokeWeight":"5","pos":[{"lat":50.729338513260764,"lon":2.623533010482788},{"lat":50.729202689316296,"lon":2.6221811771392822},{"lat":50.72864580702688,"lon":2.617589235305786},{"lat":50.72754560548544,"lon":2.6122677326202393},{"lat":50.726214462907514,"lon":2.6065170764923096},{"lat":50.7256439616535,"lon":2.603706121444702},{"lat":50.72527720717904,"lon":2.6010239124298096},{"lat":50.725087037062075,"lon":2.5988566875457764},{"lat":50.72417692653067,"lon":2.5888144969940186},{"lat":50.723837328520005,"lon":2.584630250930786},{"lat":50.72387808041123,"lon":2.58278489112854},{"lat":50.72416334265749,"lon":2.5803816318511963},{"lat":50.72454368961763,"lon":2.5782787799835205},{"lat":50.72569829540555,"lon":2.575167417526245},{"lat":50.727015869602454,"lon":2.5727641582489014},{"lat":50.72808891811774,"lon":2.571455240249634},{"lat":50.73020777718032,"lon":2.5695455074310303},{"lat":50.73219072512872,"lon":2.5678718090057373}]}],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"visitedicon":"","wmsoverlay":false,"zoom":8,"layers":[],"controls":["pan","zoom","streetview","type","scale"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"resizable":false,"kmlrezoom":false,"poi":true,"cluster":false,"clustergridsize":60,"clustermaxzoom":20,"clusterzoomonclick":true,"clusteraveragecenter":true,"clusterminsize":2,"imageoverlays":[],"kml":[],"gkml":[],"searchmarkers":"","fullscreen":false,"scrollwheelzoom":false,"locations":[{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003ELille\n\u003C/p\u003E\u003C/div\u003E","title":"Lille\n","link":"","lat":50.637282,"lon":3.063233,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EBoulogne-sur-Mer\n\u003C/p\u003E\u003C/div\u003E","title":"Boulogne-sur-Mer\n","link":"","lat":50.727546,"lon":1.618166,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EBailleul\n\u003C/p\u003E\u003C/div\u003E","title":"Bailleul\n","link":"","lat":50.732978,"lon":2.69577,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EA16\n\u003C/p\u003E\u003C/div\u003E","title":"A16\n","link":"","lat":50.728183,"lon":1.647326,"icon":""},{"text":"\u003Cdiv class=\"mw-parser-output\"\u003E\u003Cp\u003EA26\n\u003C/p\u003E\u003C/div\u003E","title":"A26\n","link":"","lat":50.720536,"lon":2.166796,"icon":""}]}

Légende de la carte ou du tableau
En bleu	Tracé concédé à la Sanef en 2015 pour mise aux normes autoroutières.
En rouge	Tracé actuel.
En orange	Tracé déclassé en 2006, et sections déclassées localement lors de l'ouverture de la voie express.
En jaune	Tracé déclassé en 1973.
En vert	Variante de tracé entre 1973 et 2006.
En violet	Ancien tronc commun avec l'ex-RN43 (déclassé en 2006).
En marron	Déviation de Borre et Pradelles mise en service le 30 juin 2014.
Pour plus d'informations sur les sources cartographiques, consulter cet article.
La carte ne s'affiche pas ? Merci d'éditer l'article et de le sauvegarder sans aucune modification.

De Lille à Bailleul (avant 1973)

Plaque de la RN 42 à Lille.
© Bzh-99

La D933 (ex-RN42) entre Nieppe et Bailleul.
© Sylvain 59

• Nord (59) / Métropole européenne de Lille - M933
  • M146 M147 M549 M617 M651 M670 M749 M750 M751 M917 M941 M949 Lille Nombreux Monuments
  • Canteleu
  • Lambersart
  • Lille Lomme M48 M654 M2652
  • Capinghem M652
  • Wez Macquart M36
  • La Chapelle-d'Armentières M22^D M945
  • Armentières M22 M1945 Beffroi
  • La Lys
• Nord (59) - D933
  • Pont de Nieppe
  • Nieppe Château D422
  • Le Pont-d'Achelles D77
  • Le Seau D38
  • Bailleul Salle Gothique, Présidial de Flandre et Beffroi  A25   10  D10 D23 D418 D944

De Bailleul à Arques (avant 1973)

La D933 à l'entrée de Cassel en provenance de Saint-Omer. © Sylvain 59

La D933 à la sortie de Cassel en direction de Saint-Omer. © Sylvain 59

• Nord (59) - D933
  • Bailleul Salle Gothique, Présidial de Flandre et Beffroi  A25   10  D10 D23 D418 D933^B D944
  • Méteren  A25   12  D18
  • Flêtre D69
  • Caëstre D947
  • L'Hazewinde
  • Saint-Sylvestre-Cappel D37
  •  Tronc commun avec la D916, entre Saint-Sylvestre-Cappel et Cassel.
  • Cassel Kasteel Meulen, Collégiale Mont des Recollets   D11
  • Bavinchove La Peene Becque
  • Les Trois Rois
  • La Maison Blanche
  • Le Nieppe D55
  • La Crosse
• Pas-de-Calais (62) - D211
  • Arques Ascenseur des Fontinettes D210 VC

De Bailleul à Arques (nouveau tracé de 1973 à 2006)

La D2642 (ex-D642) entre Borre et Pradelles en direction d'Hazebrouck. © SuperCortex6

La D2642 (ex-D642) entre Borre et Pradelles en direction de Bailleul. © SuperCortex6

• Nord (59) - D642
  • Bailleul Salle Gothique, Présidial de Flandre et Beffroi  A25   10  D10 D418 D944
  • Strazeele D69 D947 D2642
• Nord (59) - D2642
  •   D642
  • Pradelles
  • Borre
  •   D642
• Nord (59) - D642
  • Hazebrouck Rocade D916 D946
  • Les Cinq Rues Cimetière Militaire Britannique
  • Wallon-Cappel
  • Ebblinghem D55
  • Renescure Château
• Pas-de-Calais (62) - D942
  • Arques Ascenseur des Fontinettes

D'Arques à Boulogne-sur-Mer (avant la mise en voie express)

• Pas-de-Calais (62) - D211
  • Arques D210
  • L'Aa
  • Saint-Omer Cathédrale, Abbaye Saint-Bertin
  • Saint-Martin-au-Laert
• Pas-de-Calais (62) - D208
  • Tatinghem
  • Abbaye Saint-Paul de Wisques
• Pas-de-Calais (62) - D342
  • Setques D211
  • Lumbres D131 D192 D225
  • Samette
• Pas-de-Calais (62) - N42
• Pas-de-Calais (62) - D191^E4
  • La Raiderie
  • Harlettes D191
  • Bullescamps
• Pas-de-Calais (62) - N42
• Pas-de-Calais (62) - D216
  • Escoeuilles
• Pas-de-Calais (62) - N42
  • D215
  • Longueville D252
• Pas-de-Calais (62) - D224
  • Nabringhem D252
  • Colembert Château
  • Le Plouy
  •   D127
• Pas-de-Calais (62) - N42
  • La Capelle-lès-Boulogne
• Pas-de-Calais (62) - D341
  • Saint-Martin-Boulogne
  • Boulogne-sur-Mer Ville Haute, Nausicaä D940

Voie express

Section actuelle

La RN42 en arrivant au niveau de l'A26 © Sylvain 59

Historique

Déclarations d'utilité publique

• 22 09 1978 : Section Belle-et-Houllefort - Le Wast
• 21 11 1978 : Section Escœuilles-ouest - Escœuilles-est (première chaussée, carrefours à niveau)
• 17 09 1979 : Section Nabringhen - Longueville (2x2 voies, carrefours à niveau)
• 28 09 1979 : Section La Raiderie - Bayemghem-lès-Seninghem
• 01 09 1980 : Section Longueville - Escœuilles-ouest (première chaussée, carrefours à niveau)
• 12 12 1980 : Section La Capelle-lès-Boulogne-est - Belle-et-Houllefort
• 19 12 1980 : Section Bullescamps - Harlettes
• 22 03 1984 : Section Saint-Martin-Boulogne - La Capelle-lès-Boulogne-ouest
• 14 05 1984 : Section La Capelle-lès-Boulogne-ouest - La Capelle-lès-Boulogne-est (première chaussée)
• 21 07 1987 : Section Bayemghem-lès-Seninghem - Setques
• 21 04 1989 : Section La Capelle-lès-Boulogne-ouest - La Capelle-lès-Boulogne-est (seconde chaussée)
• 02 02 1990 : Diffuseur de Belle-et-Houllefort
• 01 03 1993 : Section Harlettes - La Raiderie
• 25 09 1995 : Section Le Wast - Nabringhen
• 24 06 1994 : Diffuseur du Parc d'Activité de l'Inquétrie
• 28 04 1999 : Section Boulogne-sur-Mer - Setques (A16 - A26), (mise aux normes autoroutières) Lien

Mises en service

• xx 04 1980 : Section Belle-et-Houllefort - Le Wast
• xx 07 1980 : Section Escœuilles-ouest - Escœuilles-est (première chaussée, carrefours à niveau)
• 01 07 1981 : Section La Raiderie - Bayemghem-lès-Seninghem
• xx 06 1982 : Section Bullescamps - Harlettes
• 10 09 1983 : Section La Capelle-lès-Boulogne-est - Belle-et-Houllefort
• 10 09 1983 : Section Nabringhen - Longueville (2x2 voies, carrefours à niveau)
• 10 09 1983 : Section Longueville - Escœuilles-ouest (première chaussée, carrefours à niveau)
• 07 02 1986 : Section Saint-Martin-Boulogne - La Capelle-lès-Boulogne-ouest
• 15 06 1990 : Section La Capelle-lès-Boulogne-ouest - La Capelle-lès-Boulogne-est (première chaussée)
• 15 09 1990 : Section La Capelle-lès-Boulogne-ouest - La Capelle-lès-Boulogne-est (seconde chaussée)
• 15 12 1992 : Section Bayemghem-lès-Seninghem - Setques
• xx xx 1993 : Diffuseur de Belle-et-Houllefort
• 13 11 1996 : Section Harlettes - La Raiderie
• 11 08 1998 : Section Le Wast - Nabringhen
• xx 03 2000 : Diffuseur du Parc d'Activité de l'Inquétrie
• 13 06 2016 : Carrefour-plan de Quesques (fermeture)
• xx 10 2016 : Carrefour-plan de Longueville (fermeture, sens Saint-Omer - Longueville)

Itinéraire

• Section entre l'A26 et Coulomby
  •   Échangeur entre N42 et A26
  •  N42
  •   D225  (Sens St Omer - Boulogne) : Lumbres
  •   D342  (Sens Boulogne - St Omer) : Lumbres
  •     (Sens St Omer - Boulogne) : Seninghem
  •   D191  (Sens Boulogne - St Omer) : Coulomby
  •  N42

• Mise en voie express de cette section actuellement en projet
  • Escoeuilles
  • Longueville
  • Nabringhen

• Section entre Colembert et Saint-Martin-les-Boulogne
  •  N42
  •   D224 D252  : Colembert
  •   D127  : Le Wast
  •   D238  : Bellebrune, Belle-et-Houllefort
  •   D234  (Sens St Omer - Boulogne) : La Capelle-lès-Boulogne
  •   D237  (Sens Boulogne - St Omer) : La Capelle-lès-Boulogne, centre commercial
  •  N42
  •   A16   31  vers Calais / Dunkerque
  •   A16   31  vers Amiens / Paris

Section déclassée

Historique

Voir l'article : Rocade de Saint-Omer.

Voir l'article : Rocade d'Hazebrouck.

Déclarations d'utilité publique

• 29 06 1983 : Déviation de Tatinghem (première chaussée)
• 30 09 1993 : Déviation de Strazeele
• 30 10 2003 : Déviation de Wisques
• 30 10 2003 : Déviation de Tatinghem (seconde chaussée)
• 24 11 2010 : Déviation de Pradelles et Borre
• 29 07 2021 : Déviation de Renescure

Mises en service

• 12 11 1987 : Déviation de Tatinghem (première chaussée)
• 30 06 1997 : Déviation de Strazeele
• 05 07 2010 : Déviation de Wisques
• 17 10 2011 : Déviation de Tatinghem (seconde chaussée)
• 30 06 2014 : Déviation de Pradelles et Borre

Itinéraire

• Contournement à 2x2 voies de Strazeele
  •  D642
  •     D947 Strazeele, Merville, Estaires, Caëstre (sens Bailleul-Hazebrouck)
  •  D642
  •   D2642 Strazeele, Pradelles, Hazebrouck

• Contournement à 2x2 voies de Pradelles et Borre
  •   D2642 Strazeele, Pradelles, Hazebrouck
  •  D642
  •  D642
  •   D2642 Borre D916 Hazebrouck

• Contournement à 2x2 voies de l'agglomération de Saint-Omer
  •   D943 Arques, Racquinghem, Saint-Omer, Béthune
  •  D942
  •     D77 ZI du Hocquet, Heuringhem, Thérouanne, Vers A26
  •     D210 Blendecques, Arques
  •     D211 Wizernes, Arques
  •    D928 Saint-Omer-Centre, Wizernes, Fauquembergues, Abbeville
  •   VC  Saint-Martin-au-Laert, Tatinghem
  •  D942
  •   D942 D943 Vers A26, Saint-Martin-au-Laert, Tatinghem, Tilques, Bourbourg, Ardres, Lumbres, Boulogne-sur-Mer

Diaporamas

Toutes les photos : © SuperCortex6

Sur le tracé de l'ancienne N42 entre Méteren et Hazebrouck

Sens est-ouest

• Début de la D642 à Méteren
• Intersection avec la D18
• Début de la déviation de Strazeele

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Sens ouest-est

• Coutournement nord d'Hazebrouck
• Rond-point de Borre
• Contournement de Borre et de Pradelles
• Rond-point de Strazeele
• Début de la déviation de Strazeele
• Traversée du lieu-dit Bon Bourgeois
• Intersection avec la D18
• Fin de la D642 sur l'A25 et la D944

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Sites Sara

•  [Saratlas] La RN42 sur Saratlas

•  [Saratlas] La D942 (62) sur Saratlas

•  [Autorout.free.fr] Répertoire des panneaux directionnels de la RN42

•  [Forum Sara] Fil du Forum Sara sur la RN42

•  [Forum Sara] Fil du Forum Sara sur l'ancienne RN42 dans les Hauts-de-France

Liens externes

• Plaquette d'aménagement à 2x2 voies de la RN42 entre Saint-Omer et l'A25.