The Metropolitan Washington Council of Government’s National Capital Region Transportation Planning Board just published its March newsletter.  The newsletter contains very interesting reading about the I-66 widening project in Virginia, and the public comments received during the comment period.  From the newsletter:

In January, Linda Smyth, who represents Fairfax County, and Jay Fisette, who represents Arlington County, both asked why details of the proposed multimodal improvements were not mentioned in the proposal.
Smyth also raised concerns about the impacts that construction of the project would have on major north-south arterials that cross the highway, noting that required bridge and overpass replacements could be highly disruptive to vehicle traffic as well as bicyclists and pedestrians.