SR 619 & McCallum Ave.
Stark County, OH
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BACKGROUND
MTJ Roundabout Engineering provided the peer review analysis, horizontal optimized redesign, and signing and marking recommendations for this roundabout project in Stark County, OH, working as technical area expert to the Ohio DOT (as a subcontractor to AECOM).
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SUMMARY
To address the skewed intersection and to minimize ROW impacts, we implemented a non-circular 147’ x 127’ ICD. The size, shape and placement was determined after exploring multiple placements and sizes that addressed the skewed alignment, but each of these resulted in greater ROW impacts.
Therefore, through iteration we arrived at this recommended horizontal geometrics to meet project objectives as well as roadway and roundabout safety principles and criteria.
MTJ’s redesign also included appropriate transitions to tie into existing roadways and addressed access needs of adjacent property uses (commercial and residential).
Highlights
Addressed rural high-speed approach context
Improved driver guidance
Accommodated large trucks/freight vehicles
Addressed skewed intersection
Minimized ROW impacts to surrounding properties

