Cost and financing

The actors of the project

The State is investing in Île-de-France in projects to modernise and develop the existing network. Its ambition is to improve the daily life of these inhabitants in terms of travel. This strong commitment of the State is one of the major elements that led in January 2021 to the signing of a historic agreement with the Region on the future of transport in the Capital Region.

The Île-de-France Region is the leading funder of the development of transport in Île-de-France. The improvement of daily transport is the embodiment of the transport revolution initiated in 2016 for all Ile-de-France residents.

The Val d'Oise Department is acting to facilitate travel by public transport and is participating in the financing of the studies of the bus in dedicated lanes.

Île-de-France Mobilités, the project manager for the studies, imagines, organises and finances public transport for all Ile-de-France residents.

Local authorities and stakeholders are involved in the studies throughout the project. These are:

of the municipalities concerned by the Bus Entre Seine project:
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Agglomeration communities:
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The cost and financing of the project

€125 million excluding tax, including €88.6 million for the development of bus lanes, €31.6 million in land acquisitions and €4.8 million for accompanying measures to facilitate bus traffic.
The Île-de-France Region and the Val d'Oise Department have joined forces to finance the studies relating to the Bus Entre Seine project until the declaration of public utility under the Val d'Oise Region Special Contract 2009-2013, extended until 2015.
The rolling stock and operation of the bus lines on the line are 100% financed by Île-de-France Mobilités, the transport organising authority in Île-de-France.
As the Bus Entre Seine project is a major infrastructure operation for the Ile-de-France region, the financing of the subsequent stages, including the detailed studies, will be provided within the framework of the State-Region Plan Contract (CPER). The CPER is a document by which the State and the Ile-de-France Region commit to the programming and financing of major regional development projects over a period of six years. In particular, it allows the implementation of the SDRIF in terms of transport infrastructure. Local authorities, or "local blocs", are also likely to be involved in the financing of operations.
The CPER is established on a multi-annual basis to target the investments to be mobilised throughout the regional territory over the period. The sequence of CPERs ensures the continuity of investments in the territory.