The proposed roadway would connect the existing Lake St. Louis Blvd. to Highway DD at the southern project terminus to provide a north-south connector route within a predominately residential area. The roadway will be in close proximity to existing residences and bring noise, light, and pollution to a rural area. The roadway extension will require a total of three separate crossings of the unnamed tributary to Dardenne Creek and 2 wetland impact areas. The extension will disturb a historic property consisting of features that represent ruins of a 19th century log cabin of the Hopewell African American Community. The site is eligible for the National Register of Historic Places (NRHP). The extension will also remove 8.5 acres of forested areas that are suitable summer habitat for two endangered bat species, Indiana bat (Myotis sodalis) and northern long-eared bat (Myotis septentrionalis), and the proposed endangered, tri-colored bat (Perimyotis subflavus).

The 2019 traffic study conducted to investigate the benefits and final design of this proposal did not consider any "no extension options" to improve flow at the Diehr Road/Hwy DD intersection. Its growth projections are somewhat dated as much of the area that will feed these roads has been developed. Most importantly, as most commuters are traveling to/from their residence to I-64, this proposal does nothing to benefit their overall commute to St. Louis County as the extension simply adds another route to the congested I-64. In short, this proposal offers little real benefit and a lot of adverse impacts. It's another example of ill-conceived development by the City of O'Fallon and St. Charles County.