Pedestrian Walkways in Mangrove Swamps

Do a google search on floating walkways.

Detrimental to what? The pedestrian or the swamp?

Detrimental to the swamp, adverse to the pedestrians would probably not be in the clients best interest.

Probably detrimental to critters of all types (like Gators, spiders, scorpions, and great big snakes with deadly fangs) and local flora.......

Let the fauna fend for themselves... no gators in the neighborhood.

Few things exist in swamps for long except the aforementioned flora and fauna and haven't for millions of years. I suggest you go around!

That, of course, is the logical option but clients often lack that proclivity.

We use simple wooden elevated walkways and bridges for our mangrove/river access paths in New Zealand bush walks. I think this is standard practice.

Same in the Bahamas

Over here a water use license complete with an environmental Impact assessment is required to do any development within a 500m radius of any wetland. (a bit absurd but . . . )

The required length, plan and a photos might result in better advice.

The proposal is for a 1.5 m. wide walkway through 50 m. of mangroves. Environmental impact assessments are also required here. I am sorry that, presently, there are no photos or water depths available.

Of course there is no way to be non-detrimental. But I don't know how many choices you have besides cedar or treated pylons tall enough to allow any native creature to get under it, with a rigid walkway. make sure you know the fauna. This would require it to be very high, to leave room for any antlers, or whatever. Or something like anchored floating barrels with flexible sections that will rise and fall with the tide; again, leaving plenty of room underneath, to not obstruct the wildlife corridors. Everything must be able to pass.

The walkway will eventually be accepted as part of the environment, and wildlife will incorporate it into the habitat. So the structure itself is not nearly as disruptive as the actual construction, and the actual human presence afterwards. Not to mention what the humans leave behind.

Elevated wooden walkways are your answer, over here in England archeologists found the remains of this type of walkway in a place that was once a flooded marsh in the Somerset flats, if it worked for neolithic people it will work for your project!

Xanasax

Ah, another metric conversion to the last decimal place.

A floating walkway would have the least (but not none) effect on the swamp and would work even if the tide were to rise to 0.428 m.

We have many hundreds of elevated walkways through swampland here in Florida. Virtually all that I have seen are made of pressure treated wood. They last a long time and are quite attractive.