Ball lock site, French Heritage monument to St jean sur mayenne

Bushel dam is to build on the foundations of the road prior to 1850. He obliquely bar the river just upstream of its confluence with the Ernée. It relies, downstream, however the dyke separating the bed of Mayenne short channel taken by vessels on the lower part of which was built in lock. The masonry parts are processed in carved granite. The lock House is the first built when the line of Mayenne with Belle Poule. Prior to the construction of a fourth Bay to the East, on the model of the side spans, its main elevation, oriented towards the North, had a symmetrical layout. It is distinguished from the other houses eclusieres by the shape of its openings, curved and non-rectangular. Berries frames and corner tapped chains are Tuff. Only the basement that catch front two markets in a straight staircase is carved granite. Drilled cellar Windows, he noted the presence of a cave, almost buried on this side but widely released on the rear façade where the access door is pierced. The name of the lock is engraved on the support of the central window of the first floor and his number (18) inscribed on a plate of iron placed above the main door key. In the garden, East lie a latrine building, built according to the plan-type, brick masonry and roof Pavilion, and at the end of the parcel, along the towpath, a revised dependency, currently serving garage. The floor of BU exist since at least the 15th century. It was the operation of a mill located on the left bank. In order to ensure the passage of boats on the high Mayenne, a project for the construction of a lock ball is established in 1846 by the ordinary engineer Ponts et chaussées Leblanc. It provides the simple heightening of the dam, the destruction of the mill and the digging of a small channel of access to the lock. Work are assigned by auction on 27 March 1847 entrepreneurs of Neuilly-le-Vendin Victor Pelletier and Pierre Lebreton. Quickly interrupted, they are included in 1852 on a draft revised by e. Caillaux engineer in 1850: pertuis moved against the abutment of the dam on the right bank. Construction, carried out in Régie, is virtually complete at the end of 1853. The door lock House the date of 1848 on the arc of the door key. A new mill was erected on the right bank in 1860. The dam was rebuilt in 1881 on the plans of the engineer Moreau by Laval Joseph Vannier contractor chosen by tender on April 30, 1880. The lock House was expanded in 1982.

Source: Ministry of Culture, France

Ball lock site
Crédit photo : (Ball lock site, st jean sur mayenne)

Reported to be remarkable heritage of quality.

Structural information

Ball lock site, Bushel dam is to build on the foundations of the road prior to 1850. He obliquely bar the river just upstream of its confluence with the Ernée. It relies, (...) Ball lock site, French Heritage monument to St jean sur mayenne st jean sur mayenne, mayenne

Location and general information

  • identifier : 83851
  • item : site d'écluse de Boisseau
  • Location of the building :
    • Pays de la Loire
    • Mayenne
    • Saint-Jean-sur-Mayenne
  • Place name : Boisseau
  • INSEE code of the municipality : 53229
  • Zip code of the municipality : 53240
  • Order in the communal list : 7
  • Name of the building :
    • The building is designated as follows : lock
  • State :
    • current state of the monument : good condition

Dates and times

  • Period of construction :
    • We have no information on the time of construction of this monument.
  • Years :
    • 1848
    • 1881
    • 1982
  • Investigation : 2001
  • Date taken into account : 2003/03/24

Construction, architecture and style

  • Materials: 6 elements are used in the main structure of the building.
    • rubble
    • coating
    • brick
    • ashlar
    • stone
    • granite
  • Roofing : Coverage of this building is varied there are 4 different types :
    • roof with long tails
    • sprocket cover
    • pinion
    • roof
  • Materials (roofing) :
    • the main material of this building is slate
  • Other about the composition roofs :
    • No information on the coverage of the place.
  • Floors : 2 type of floors in this manual :
    • stage base
    • floor addition
  • Stairs :
    • No stairs mentioned on this construction.
  • Decoration of the building :
    • No information about decoration.
  • Representation :
    • No information on the ornamentation of the place.
  • Typology :
    • No information about typology.
  • Plan :
    • We do not know the type of plan for this building.

Monument and history of the place

  • Elements protected MH (historical monument) :
    • Any particular element of the building is subject to protection in our database.
  • Constituent areas : 2 distinct parts in the constitution of this place :
    • home
    • latrine
  • Parties constituantes étudiées : The investigation carried out on site has allowed to identify 2 distinct parts in the constitution of this place :
    • mill
    • flour mill
  • Use :
    • We do not know the different uses that have been made of this construction.


  • Other :
    • other Information : property of the State
  • Author of the survey MH : Foisneau Nicolas
  • Mérimée reference : IA53000511

The complete official record is available at Conseil régional des Pays de la Loire - Service du patrimoine - 1 rue de la Loire - 44966 Nantes cedex 9 - 02 28 20 54 70

Men involved in this construction

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