State Highway 1 at Huntly will be closed for five hours on Sunday night to allow contractors to removed and replace damaged framework on the town's footbridge.
The New Zealand Transport Agency is warning motorists of delays.
The highway will be closed from 8pm Sunday until 1am on Monday. During the closure traffic will be detoured off SH1 via Fletcher St, Hakanoa St, William St, Rayner Rd, Tumate Mahuta Dr and Tainui Bridge Rd back to SH1 and short delays are possible.
The work to repair the footbridge is expected to be complete in mid-September. There will be no pedestrian access to the bridge during this time.
Speed restrictions and lane closures will also be in place on SH1 Taupriri from 7pm Sunday until 5.30am the following day while contractors repair and resurface parts of the road.