In France, the building of railways was controlled by the Government. This avoided the duplication of routes that was seen in the UK and meant that the large cities and towns were connected. The citizens of the smaller towns and villages also wanted railways to be built to connect them to the network. The departments were given authority to oversee the construction of these minor lines, some of which were built to standard gauge and others were built to metre gauge. The Réseau des Bains de Mer system came under the control of the Somme Department.
Freight.
The main freight carried was sugar beet and phosphates. Sugar beet was processed at the raperie at Crécy-Estrées before being sent by rail to Lanchères-Pendé. This being the final traffic carried on this section of the RBM. Phosphates were mined at Forêt du Crécy and sent by rail to St. Valery.
Noyelles - Forest-l'Abbaye.
This line was long. Leaving Noyelles station, it climbed to cross the main Boulogne-Abbeville line. Stations were provided at Sailly-Bray, Sailly-le-Sec, Nouvion-en-Ponthieu and Forest-l'Abbaye, where there was a junction with the Abbeville-Dompierre line. The line was opened on 24 August 1892, and closed to passengers on 10 March 1947. The line remained open for freight until 1 February 1951. After closure, the line saw occasional use for freight until 1965.
Stations
Noyelles-sur-Mer
A station was opened at Noyelles in 1847, being on the standard gauge line between Boulogne and Amiens. In 1858 a single track branch opened to St. Valery sur Somme. Metre gauge branches opened to Le Crotoy and Cayeux in 1887, the latter being laid between the rails of the standard gauge branch to St. Valery. The final line to be built to Noyelles was a metre gauge branch to Forest l'Abbaye which opened on 24 August 1892, and closed to passengers on 10 March 1947 and freight on 1 February 1951.
A station served the village of Nouvion-en-Ponthieu
Forest l'Abbaye station will be covered under the Abbeville-Dompierre line.
Abbeville - Dompierre
This line was long. It ran from the Chemin de Fer du Nord station at Abbeville to Dompierre-sur-Authie, with a junction at Forest-l'Abbaye with the line to Noyelles. There were stations at Abbeville PorteSaint Gilles, Abbeville Porte du Bois, Drucat, Plessiel-Drucat, Canchy-Neuilly, Lamotte-Buleux, Forest-l'Abbaye, Forêt du Crécy, Crécy-Estrées, Wadicourt and Dompierre-sur-Authie. There were plans to extend the line into the Pas de Calais department. In 1892 a line was planned from Dompierre-sur-Authie to Hesdin. It would have been long with intermediate stations at Raye-sur-Authie, Guigny and Lequesnoy. A second line was planned from Dompierre-sur-Authie to Wailly, connecting with the CF du ARB. The long line would have had intermediate stations at Tortefontaine, Douriez, Saulchoy, Saint-Rémy-au-Bois, Campagne-les-Hesdin, Buire-le-Sec and Bois-Jean. Neither line was built. The line served mainly small villages with little industry. It opened on 19 June 1892, and closed on 10 March 1947, except the section between Crécy and Forest-l'Abbaye, which remained open to freight until 1 February 1951. The section north of Crécy to Dompierre-sur-Authie saw occasional use for freight until 1956. The section south of Forest-l'Abbaye to Canchy saw occasional use for freight until 1965.
Stations
Abbeville (Nord)
Abbeville was the furthest station south, it was from Noyelles and from Dompierre-sur-Authie.
Porte Saint Gilles
Porte du Bois
Drucat
This station served the village of Drucat.
Plessiel-Drucat
A halt served the hamlet of Le Plessiel, part of the Drucat commune.
was where the line from Noyelles joined the line between Abbeville and Dompierre-sur-Authie. It was from Noyelles.
Forêt du Crécy
were mined locally, and transported to St. Valery by rail.
Crécy-Estrées
This station served the villages of Crécy-en-Ponthieu and Estrées-lès-Crécy. A source of traffic was the raperie here, which processed sugar beet before it was sent to a refinery. This traffic continued until 1951.
Wadicourt
There were two point for the collection of sugar beet here.
Dompierre-sur-Authie
was the Northern terminus of the line from Abbeville. It was from Noyelles and from Abbeville.