WESTBOROUGH- SOUTHBOROUGH- RECONSTRUCTION OF I-495 AT ROUTE 9 INTERCHANGE, INCLUDING BRIDGE REPLACEMENT (W-24-020 & W-24-021), BRAIDED RAMP CONSTRUCTION AND ROUTE 9 IMPROVEMENTS

The proposed improvements involves replacement of the I-495 NB and SB bridges and construction of a braided ramp system, including construction of four new ramp bridges. Route 9 improvements extend from the Computer Drive/Research Drive intersection to the Crystal Pond Road intersection. Improvements include widening Route 9 as required, adding an auxiliary lane on Route 9 WB between I-495 SB and Computer Drive, reconfiguration and reconstruction of the Route 9/Crystal Pond Road intersection, and limited improvements to intersections along Research Drive and Computer Drive. Other improvements include bicycle and pedestrian improvements as feasible.