A contractor walks to cut down a tree and clear out space along the Georgetown Branch Trail to make way for the Purple Line on Sept. 27 in Chevy Chase, Md. (Ricky Carioti/The Washington Post)

The benefit of the Purple Line “public-private partnership” conveys primarily to the private developers who back it. The public will see desperately needed tax dollars diverted from repairs to its existing, crumbling infrastructure. Those tax dollars will instead be used to create new infrastructure to maintain and a new bureaucracy to manage it. Surely it is more responsible to fix what we already have. The Purple Line feels like building a pool when the roof leaks.

Julie White, Chevy Chase