More info here:  
https://www.thesandpaper.net/articles/new-drainage-system-connected-expected-to-reduce-flooding-in-ship-bottom/  
https://www.thesandpaper.net/articles/causeway-meeting-yields-compromise-understanding/  
https://www.nj.gov/transportation/commuter/roads/rte72manahawkinbaybridges/  

Looks like we'll have to update some one-way roads to two-way traffic too.