Readers know the BD is a lover of marshes and swamps. They are full of life - more than any other form of habitat.
When a dike was built across the Herring River in the late 1800s, the tidal flow was interrupted and the river began silting up and turning into fresh water. A few years ago, the bridge was reconstructed to permit a full tidal exchange without removing the road dike.
The phragmites is dying out, spartina is returning, and the tidal flow is vigorous. Environmental successes usually come in small pieces.
Deep in town, a railroad dike was built in the late 1800s to carry vacationers and mail to Wellfleet - and to carry fish and oysters to NYC. This dike also impeded free tidal flow and caused the inner harbor to silt up. Tall ships used to dock in there. The pilings of the railroad bridge on the dike remain:
I doubt that the village would spend any $ to remove the old dike.
Here's my challenge to the town of Wellfleet: re-open the dike between the marina and the marsh behind it - the marsh that begins behind Capt. Higgins Pearl and used to stretch back for several 100 acres until the harbor construction closed the salt flow to a tiny trickle destroying a large salt marsh. I'll donate.
All it needs is a simple 30-40' bridge there to de-silt and salinate the old marsh.
Addendum: Thanks to commenters for some corrections.