Northway overpass closure traffic disruptions to last weeks | The Daily Gazette SECTIONS April 15, 2021 The underside of the Sitterly Road overpass on I-87 was damaged after a truck carrying a boom lift struck the Clifton Park bridge on Wednesday. Shares0 CLIFTON PARK & HALFMOON The two towns around Northway Exit 9 are anticipating extended local traffic disruptions because of the boom rig accident Wednesday morning that seriously damaged the Sitterly Road overpass over the Northway, closing that bridge indefinitely, pending repairs. Two out of three Northway lanes re-opened before the Thursday morning commute, relieving the shocking wave of additional traffic on local roads that was seen after Wednesday morning’s crash, which abruptly closed all the southbound lanes — but the situation on Thursday wasn’t anywhere near normal, either.