The £100,000 project, carried out by Amey on behalf of Transport Scotland, was supposed to  see the northbound section of the bridge closed for this full weekend, starting at 8pm on Friday, August 8, until 6am on Monday, August 11.

However, due to “forecast heavy rain”, the works have now been extended, causing further diversions for drivers.

The northbound carriageway of the bridge will now be shut until 6am on Tuesday, August 12, 2025.

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The southbound carriageway will have a single lane open.

A spokesperson for Amey said: “Please be advised that due to forecast heavy rain, the closure on the northbound A898 Erskine Bridge will remain in place until 6am until Tuesday 12th August. 

“We apologise for any inconvenience this may cause, and road users are advised to plan their journey times, accordingly, seek alternative routes or follow the standard, agreed diversions outlined below, while the works are taking place.

“Emergency service access has been agreed and will be maintained in coordination with relevant parties.”

The works are intended to improve the condition of the bridge joints and road surface, increasing reliability and safety, and reducing the likelihood of more extensive or disruptive future repairs.

The list of closures due to the works is extensive.

These include the M8 Junction 30 westbound off-slip to M898 northbound, the A898/M898 northbound, the A898 northbound slips to Great Western Road (both directions), and the A898 northbound on-slip to the Erskine Bridge.

A single lane closure will also be required on the A898 southbound carriageway.

The A82 southbound off-slips to the Erskine Bridge will also be closed.

Diversions for northbound traffic have been put in place.

Eastbound M8 traffic from Greenock/Port Glasgow will continue on the eastbound M8 to the Kingston Bridge and onto the M8 Junction 17 off-slip (Charing Cross, Glasgow) to join the westbound A82 (Great Western Road).

Westbound traffic wishing to access the A898 Erskine Bridge will instead turn at the M8 Junction 31 off-slip (West Ferry Interchange) to join the same eastbound diversion.

Westbound M8 traffic from Glasgow towards M898 intending to cross the A898 Erskine Bridge should follow the M8 to Kingston Bridge and onto the M8 Junction 17 off-slip (Charing Cross, Glasgow) to join the westbound A82 (Great Western Road).

Westbound M74 traffic towards M898 intending to cross the A898 Erskine Bridge should exit M74 Junction 1 (towards Kinning Park) and follow local signage to the westbound A82 (Great Western Road).

Northbound M77 traffic towards M898 intending to cross the A898 Erskine Bridge should travel on the eastbound M8 and follow local signage to join the westbound A82 (Great Western Road).

For southbound traffic, the Erskine bridge southbound on-slip from A82 westbound will be closed from 6am on Saturday, August 9 until 8pm on Sunday, August 10.

Westbound A82 traffic intending to travel south on the A898 Erskine Bridge will be directed to continue west to Dunglass Roundabout, and then return eastbound to join the southbound A898 Erskine Bridge traffic.

The Erskine bridge southbound on-slip from A82 eastbound will be closed from 8pm until 6am on both nights of Friday, August 8 and Sunday, August 10.

Eastbound A82 traffic intending to travel south on Erskine bridge will be diverted via Kilbowie Roundabout and access Erskine bridge from A82 westbound.

Local access to Erskine will be maintained via the B815 and the A726.

Eastbound traffic from Greenock/Port Glasgow will continue on the eastbound M8 to Junction 30 to access Erskine via the A726.

Westbound M8 traffic from Glasgow to M898 wishing to access Erskine from the M8 will be diverted at the M8 Junction 31 off-slip road (West Ferry Interchange) to follow the eastbound diversion above to the A726.

Local Erskine traffic intending to access the A82 Great Western Road, will be diverted at the A726 Spectacles Roundabout and join the southbound M8 off-slip road to the eastbound M8 and continue to the M8 Kingston Bridge Junction 17 off-slip road to join the westbound A82 (Great Western Road).

Motorists are advised to seek alternative routes where possible to avoid the M898/A898 during these works.