UPDATE 2: Added Nav-mesh, a few idles, and more decoration. Small problem with 2 of the NPCs spawning in the water, working on that.

UPDATE: After corrupting my mod somehow after a few hours work I managed to re-do what I had added, but without a nav-mesh, which is why NPCs won't move around or walk on the bridge.
To start, this is my first mod!  It adds a bridge connecting Far Harbor to Old Longfellow's Cabin.

In Survival mode I was tired of travelling the long way 'round to go back to either when I'm in the other; so I created this bridge that makes travelling between them a short walk!

I'd really love any suggestions.

To do: just add a few more decorations around the bridge, maybe a fish farm.

Thanks to Luthaum for this reminder: edit your
"Fallout 4 Custom.ini"
and add
[Gameplay]
fPlayerDisableSprintingLoadingCellDistance=0

to enable sprinting again. You'll also need the 2 mods that help with the cell reset bug:

http://www.nexusmods.com/fallout4/mods/6772/?

and

http://www.nexusmods.com/fallout4/mods/6698/?