Wrong. Check out the final Environmental Impact Statements that show plans to run the Red Line underground all the way to Arlington Heights. Remember that the plans c alled for retention of freight rail service in the corridor, which is no longer a necessity. It's time to dust off the plans...
Chatting about a Red Line extension into Arlington might be fun, but getting involved to make it happen is a much better idea. Please join friends advocating for a RLX and better transit in Arlington here:
https://extendtheredline.org/