SleepyLand2the bridge hood decoration can be used to connect the road across the river.
One small section of the beach (by the end of the river) needs fiddling so beach lots will work, not sure why but after placing a empty regular 2x4 lot and then bulldozing it, beach lots would then place.
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a hacked Neighborhood Camera is needed to see & use the whole terrain. my edited version of GunMods neighborhoodcamera file is available here at
http://www.insimenator.org/showpost.php?p=1067854&postcount=6----
To Install - place the .sc4 & .png files in your My Documents\EA Games\The Sims 2\SC4Terrains folder (make sure they aren't in a subfolder or they won't show up. I zip them in a folder.)
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CUSTOM NEIGHBORHOOD PICTURE
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In order to create a custom picture to represent your neighborhood on the main menu, first save the picture you wish to use as a .png file (a 4x3 size ratio works best, but pictures with other proportions will be stretched to fit). The file must be named N0XX_Neighborhood.png (where XX is the neighborhood number). Then place the file in the neighborhood's directory (e.g., My Documents\EA Games\The Sims 2\Neighborhoods\N004).