Unable to answer "What height limit is indicated below the bridge?" – Service Road – https://osm.org/way/891411307 via StreetComplete 57.2:

The center lane heading westbound has a height limit of 8' 2". No other height restriction signs noted.

Attached photo(s):
https://westnordost.de/p/208027.jpg
https://westnordost.de/p/208028.jpg