The view from a local side street shows the closure:

 

So, you'll need an alternate route to get to town:

Google Maps shows the closure by the blue "x" and the arrow points to one of the detours.  IF you are going downtown, get to the light by Beals Ice Cream and stay to the right where you can merge with other traffic.  If you are heading to Westbrook, you'll need to wait for the light.

You can take Huston Rd. to Rte 114 and head into town that way too.

The 202 corridor is open to local traffic only.  There is no way to get through the work area because they are replacing a bridge.

Be patient!