
Detailed traffic analyses have been performed on the
alternatives that have been carried forward. Traffic volumes
associated with each alternative have been forecasted
for the year 2003 by the Southwestern Pennsylvania Commission.
The project team utilized these volumes to determine the
number of lanes, intersection configurations, and other
traffic characteristics required for each alternative.
View
a larger version of the forecasted traffic volumes map
shown below: (472K) >>
Based on the analysis of these volumes for key segments
in the project area, conclusions were made. As part of
each alternative, left-turn traffic from Route 228 would
not be permitted from Route 19 east to Route 8. In high
traffic areas, frontage roads and grade-separations were
introduced. As the design progresses, the project team
will analyze each intersection along Route 228 to determine
the best design for each location while maintaining consistency
in prohibiting left-turn traffic.
Click on the map below to view a larger version.