This bridge is being rebuild. At the moment no passage is possible.
for details see: https://www.darmstadt.de/presseservice/einzelansicht/news/geaenderte-verkehrsfuehrung/?tx_news_pi1%5Bcontroller%5D=News&tx_news_pi1%5Baction%5D=detail&cHash=6de74672367afd1aebcf2d88d0c9bb40