Final Report - VHB.com

4.7.2 Option 2
Option 2 (Figure 4-5) replaces the
existing signal at the Main
Street/Coastal Connector
intersection with a modern two-lane
roundabout. Option 2 also extends
the existing four-lane, mediandivided
Coastal Connector from the
new roundabout easterly 1.0 mile
through the Community
Way/Village Drive intersection to
the existing four-lane, mediandivided
section of the Coastal
Connector at the signalized intersection with the connector to State Route 24 (i.e.,
Middlesex Road).
In Option 2, the existing bicycle–roadway shoulder lanes also are extended along
both sides of the Coastal Connector. Eastbound and westbound right-turn bypass
lanes are added from the Coastal Connector to Main Street, which allow rightturning
traffic to bypass the roundabout and travel southerly and northerly on Main
Street, respectively. North of the roundabout, Main Street is widened to four lanes to
accommodate vehicles exiting and entering the new two-lane roundabout before
transitioning to three lanes; this includes a northbound–southbound lane and a
center two-way left-turn lane. The proposed three-lane section transitions to the
existing two lanes or connects to the Option 5 improvements (described herein) to
the north. Sidewalks are provided along both sides of Main Street, around the
circumference of the roundabout, and along the south side of Lewiston Road to
Horton Place.
Option 2 includes construction of 0.4 mile of roadway along Main Street; 1.0 mile of
the Coastal Connector; a two-lane roundabout; 0.8 mile of sidewalk and 2.0 miles of
bicycle–roadway shoulder; and extension of the existing Coastal Connector bridge
over the Lower Road Rail Line.
4.7.2 Option 2A
Option 2A (Figure 4-6) is essentially the same as Option 2 without extending the
existing four lanes from the Main Street/Coastal Connector intersection easterly to
the connector to State Route 24 (Middlesex Road) intersection. Option 2A replaces
the existing signals at the Main Street/Coastal Connector intersection with a modern
two-lane roundabout. As in Option 2, development of the roundabout design at this
location involves a balance between vehicular use and pedestrian safety, as well as
operational performance and accommodation of oversized vehicles. The four travel
lanes and bicycle–roadway shoulders extend through the roundabout easterly for a
Summary of Options 97