Traffic, my old friend.
Part 1 http://imgur.com/a/fuLtx
Part 2 http://imgur.com/a/XnJ4v
The traffic leading into the second isle becomes unbearable, there has to be a bad junction or a cause somewhere further into town.
I think we may have found the culprit...
The traffic lights on this junction are the cause, they're not free flowing enough.
Roundabout! Much more free flowing, and should solve the problem.
The residents and businesses in the way are "politely" asked to move, and most comply, with the rest disappearing mysteriously and leaving empty demolishable buildings.
Highway no more
Blackwater also turns its attention to this ugly highway section through their city, it's a bit of an eyesore and the land could be used for other purposes. The port area is already as dense as can be, so the land is desperately needed.
The first part of the highway is sunk, this might take time.
On a rail
More transit improvements! This rail line was approved when the roundabout was still in construction, as traffic was still a nighmare. In order to cut commuting traffic to Blackwater Isle, a rail line was constructed between there and the second Isle, which has become known as Kerwan.
The line sneaks around the farms and highway interchanges on Rilgar Isle
Towards the police station on Rilgar
Past the Hospital and school
And on to the shoreline of Rilgar isle, opposite the Isle of Blackwater, where land was still vastly cheaper and where Rilgar didn't mind adding a station, due to the possible development and growth.
Investment pays off
Shh... the first library in the district of Blackwater arrives, along with a university. It's situated next to the station, for ease of access. It's accompanied by another police station, which really starts to make a difference in crime.
Rilgar sees high density as the area around the station becomes more accessible.
A line is even added to the industrial centre on Rilgar, trying to cut commuting further.
The traffic on Blackwater becomes near unbearable, but not much can be done. All upgrades have been made.
Rilgar, seeing the issues Blackwater is having, prepares for the onslaught.
The rapidly growing industrial sector needed an upgraded roundabout to cope, so tunnels and an overpass happen.
The highway is sunk, finally. It's taken a while, but looks much better and sound pollution has dropped considerably.
Realising its potential benefits, Blackwater council designates the area as a recreational zone, forbidding any construction of other natures. Parks and such pop up, as council funding arrives.
The new quality of life in Blackwater entices more density, and more people to the island, so the power plant is expanded yet again. Rilgar takes yet another hit, as another smog belching plant is added to their land. They may want to consider green energy in the future.
At least the crap lake is now cleaned, and desirable to be near now.