A short walk from the Marina Trailhead on the West River Trail sits one of two riverside viewing platforms. The other is located directly across the river, and can be accessed from Vermont Route 30. The twin platforms are part of the new I-91 bridge, completed in Autumn 2017. A short walk from the bustle of town, directly below a busy highway, the viewing platforms sit close to nature and the flow of the river.
THE WEST RIVER TRAIL 
You should also mention that the bridge has stanchions — support hard-points — built in for the eventual construction of a suspended pedestrian/bicycle bridge which will run from one platform to the other beneath it! These were my idea, shared in its planning stages.
Thanks for sharing John! A wonderful idea! Fingers crossed.
I had heard about that too and think that would be terrific
Agreed! Would be really great to have a pedestrian bridge over the river.