A water main break on Main Street in downtown Zanesville is causing some traffic problems Wednesday evening. Public Service Director Mike Sims says a 12 inch main burst near Benco Pet Food Company and in order for repairs to be made Main Street has been closed. That also means that the Main Street span of the Y-Bridge is closed and will remain that way through part of Thursday. The West Main Street to Linden Street spans of the bridge remain open. Sims says only two businesses downtown lost water service as a result of the break.