The Schuman-Josaphat tunnel is a 1,250 metres double track rail tunnel in Brussels, which entered into service on 4 April 2016. It links line 161 just after Meiser station and line 26 at the Cinquantenaire/Jubelpark tunnel just before Schuman station. The line is numbered L161A. A key component of the Brussels RER project, it passes beneath avenue Plasky/Plaskylaan, place de Jamblinne de Meux/Jamblinne de Meuxplein and the Cortenbergh/Kortenberg road tunnel. The position of the tunnel in the Brussels rail network is shown in the simplified map on the right. Benefits of the project include:
reducing the journey time from the European quarter to the airport from half an hour to less than 15 minutes by opening a direct route and avoid having to change at Brussels North station
Wikipedia https://en.wikipedia.org/wiki/Schuman-Josaphat_tunnel
Coordinates 50°50'40.925" N 4°23'14.64" E