Environmental Assessment - MdTA

lanes, reduced median width, and the addition of new structures such as retaining walls,
sound barriers and bridges.
The added width of the Build Alternatives would reduce existing green space in the median
and extend into the roadsides in some locations. Some existing trees and roadside
landscaping would be removed, reducing or eliminating wooded buffers between the
highway and adjacent homes. There is the potential that some existing sound barriers would
also need to be relocated under both alternatives.
New highway structures at the MD 152 and MD 24 interchanges would be visible along the
corridor. Other visual impacts would occur from the proposed park and ride lots along MD
24 and MD 152. It is expected that landscaping of the new lots to reduce visual effects
would be incorporated into the final design of the lot. It is unknown at this time the extent
lighting fixtures that will be included with the lot designs; however, it is not expected to be
significantly more intense than the existing light at the lot, roadway, highway, and
interchange ramps.
Other structures along the corridor would include sound barriers and retaining walls. New
sound barriers will be considered as part of the separate noise study, and would be
constructed in areas along the corridor where they meet the feasibility and cost effectiveness
criteria. These new barriers would help to visually screen the highway from the community
as well as attenuate noise. Other possible locations for new structures may include bridge
abutments and retaining walls along roadsides where cut and fill slopes would need to be
minimized.
When located in visible areas, these retaining walls and sound barriers could receive aesthetic
treatments such as patterning and staining to create a more context-sensitive finish.
Additionally, plantings could be added along sound barriers and retaining walls to help soften
their appearance. The finish should be coordinated throughout the corridor and with other
structural elements to maintain visual continuity.
Section 200 Draft Environmental Assessment
III-26