Bonne Nouvelle is a station on lines 8 and 9 of the Paris Métro.
The section of lines 8 and 9 from just east of Richelieu - Drouot to
west of République was built under the Grand Boulevards, which
replaced the Louis XIII wall and is in soft ground, which was once
the course of the Seine.
The lines are built on two levels, with line 8 on the higher level and
line 9 in the lower level. The platforms are at the sides and the box
containing the lines and supporting the road above is strengthened
by a central wall between the tracks.
There is no interconnection between the lines at Bonne Nouvelle,
with each level having different accesses to the street.
October 8, 2018