Final Report - VHB.com

The new interchange with Main Street is configured as an urban half-cloverleaf-type
interchange in which both the eastbound and westbound ramps are located east of
Main Street.
This proposed interchange configuration takes advantage of the topography, existing
cultural resources, and existing roadway infrastructure including Monument Place
and access to Mount Ararat High School. The ramps provide free-flow access to and
from the Coastal Connector before transitioning to a three-lane roadway section,
which includes two travel lanes and a center left-turn lane that allows controlled
access to abutting properties before intersecting with Main Street. In Option 3, Main
Street is widened and reconstructed for approximately 0.6 mile beginning at
approximately 0.1 mile north of Pleasant Street and ending in the vicinity of Forrest
Drive to the north. The widening includes one travel lane in each direction and a
raised-median island that transitions to a left-turn lane (if required) at intersections.
Sidewalks are constructed on both sides of Main Street and along the north side of
the westbound ramps into the Mount Ararat High School complex. The eastbound
ramps intersect Main Street at a new signalized intersection opposite Monument
Place. The westbound ramps intersect Main Street at a new signalized intersection at
the existing entrance to Mount Ararat High School. The high school access shifts to
the east and connects to the westbound ramps. A new connector roadway intersects
opposite the high school, creating the fourth leg of the signalized intersection. The
roadway extends from Main Street westerly and southerly for approximately 0.3
mile, connecting opposite Mallet Drive at its current signalized intersection with
Lewiston Road. In Figure 4-6, a future multiuse trail is shown adjacent to the Coastal
Connector. The proposed interchange ramps provide continuity along the Coastal
Connector corridor and connectivity to adjacent connecting roadways.
Option 3 includes reconstruction of 0.6 mile of Main Street; 1.2 miles of Lewiston
Road/Coastal Connector; 0.5 mile
of ramps and connector roadway;
two signals on Main Street; 1.3
miles of sidewalk and 3.0 miles of
bicycle–roadway shoulder; 0.4
mile of retaining walls; one
bridge over Main Street; two box
culverts crossing unnamed
brooks; and extension of the
Coastal Connector bridge over
the Lower Road Rail Line.
Summary of Options 99