Ohio

[TempoNick]

Nothing under 752.4 also mandates ODOT to keep excessive tree growth or vegetation, either. It would be considered appropriate in urban and rural areas for grass to serve as the vegetative buffer.

Without the vegetation, I bet the sound on the other side of that Gahanna wall is unbearable. That's what happened when they put the sound wall up around me. They may have fixed it for people living along the freeway, but they ruined it for me.

But I don't think those sound walls have anything to do with actually deadening the sound. I think it's all about covering up the ugly houses so you don't have to see them from the freeway. Yes, I'm being facetious.

[Rothman]

"Oh, brother." Again, no citations were provided, and only vague statements were made. Check.

Looking through the FHWA, nothing under "NEPA" forces a DOT to mandate tree or vegetation encroachment on the right-of-way. Under the Federal Aid Policy Guide 752.4:

"Landscape development, which includes landscaping projects and other highway planting programs within the right-of-way of all federally funded highways or on adjoining scenic lands, shall be in general conformity with accepted concepts and principles of highway landscaping and environmental design."

If this was the Highlands Scenic Highway in West Virginia, considerations may need to be made on landscape or vegetation encroachment and management. A highway through central Columbus isn't going to violate "NEPA" or the FHWA. As ODOT's own guidelines and policies state, each municipality needs to submit an action plan to maintain said vegetation. If the City of Columbus (in this instance) did not, then ODOT can fault the city for allowing the vegetation to become a nuisance and have it removed.

Nothing under 752.4 also mandates ODOT to keep excessive tree growth or vegetation, either. It would be considered appropriate in urban and rural areas for grass to serve as the vegetative buffer.

You need to read what I wrote again.

Broad policy statements and even legislation are not where you're going to find the actual processes that govern what is included in a design approval document, ADPs, or PS&Es and their supporting documentation. 

My citation is simply my past few years being directly involved with project development and the fact I just had this discussion with a NYSDOT RLA just two weeks ago or so.