N28 and Maryborough Hill Road to Close Over October Bank Holiday Weekend for Bridge Demolition
The N28 will fully close between Rochestown and Carr's Hill over the October Bank Holiday weekend, with Maryborough Hill Road also closing at the bridge.
Maryborough Hill Road will close to vehicular traffic at the temporary bridge for part of the October Bank Holiday weekend. This is on top of the full N28 closure between Rochestown and Carr's Hill already announced for the existing Maryborough Hill overbridge demolition.
In a new advance notice dated 6 October 2026, BAM confirmed that the N28 will be fully closed from 8pm on Friday 23 October until 5am on Tuesday 27 October 2026. Maryborough Hill Road will be closed at the temporary Maryborough Bridge from midnight on Friday 23 October until 6pm on Saturday 24 October 2026.
The road closure is needed because the demolition works are so close to the temporary bridge. Maryborough Hill Road will be closed to vehicular traffic at the bridge while the demolition works are ongoing. BAM said both closures are necessary to ensure the safety of road users and construction personnel. The roads will open earlier if, as expected, the works are completed ahead of time.
The works are part of the M28 Cork to Ringaskiddy Motorway scheme, and the existing overbridge at Maryborough Hill will be demolished and replaced with a new structure. In its earlier notice, BAM said the bridge will be taken down using excavators with specialised demolition attachments. Protective layers will be laid on the N28 beneath it first to protect the road surface.
A comprehensive traffic management and diversion plan will be in place for the duration of the N28 closure and demolition works. Full diversion routes will be clearly signposted for both local traffic and Heavy Goods Vehicles (HGVs). Emergency services will be made aware of the diversion routes.
HGVs will be diverted via Junction 6 on the N40. The signposted route takes them along the N27 and R600 past Cork Airport, then the R613 and R611 via Carrigaline to rejoin the N28 south of the closure. Local traffic will follow a separate signposted diversion on surrounding roads in the Douglas and Rochestown area. The diversion routes are shown on the map below.
BAM has issued the notice in advance so that businesses can inform their employees, subcontractors and suppliers. That gives everyone time to plan ahead, adjust logistics where necessary and minimise potential disruption.
More weekend closures of the N28 will follow at key stages of the project. Beams for the new Maryborough bridge spanning the N28 are due to be installed in the first or second quarter of 2027. Once the new permanent overbridge is open to traffic, another weekend closure will be needed in the second or third quarter of 2027 to dismantle and remove the temporary bridge. That will involve lifting operations similar to those used to install it.
Queries about the works can be directed to Des Gilsenan at M28queries@bam.com or on 1800 816 197. More information on the scheme is available at m28.ie.
