NEEDHAM (CBS) – Route 128 Northbound in Needham was shut down Friday night as crews began to demolish a decades-old bridge.

MassDOT is closing a section of the highway so that crews can take down the old Highland Avenue bridge. It’s part of an ongoing project that will widen the highway to four lanes.

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Work on the northbound side of Route 128/I-95 began at 8:50 p.m. on Friday and will continue until 3 p.m. on Saturday. Then, the southbound lanes will be shut down from 6 p.m. on Saturday until 3 p.m. on Sunday.

Traffic will be diverted to local roads during the closure. MassDOT has maps of all the detour routes here.

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Drivers are asked to slow down in the construction area, and extra police and signage will be in place to guide traffic.