The historic bridge will temporarily close to traffic next month for work to repair the heritage structure and preserve its features.

The NSW government is funding the work to ensure the bridge continues to be a safe connection for communities along Moss Vale Road at Kangaroo Valley.

“The Hampden Bridge is arguably one of the region’s most beautiful and iconic structures,” Kiama MP Gareth Ward said.

“The heritage structure has served the community well, but work is required to ensure the bridge continues to meet the needs of all road users now and in the future.”

Work will be carried out between Monday, May 14 and Thursday, May 17, weather permitting, to replace timber beams on the bridge, protect its heritage and maintain the load limit of up to 42.5 tonnes.

“Work will take place at night to reduce the impact to the community, but it will require the full closure of the bridge to ensure the safety of workers and road users,” Mr Ward said.

“Pedestrian access will be maintained across the bridge, but there may be short delays.”

Parking for residents will be provided on either side of the bridge for those who return after 6pm or who have to leave prior to the bridge reopening at 6am.

Buses will be available to transport people to their homes or businesses located within Kangaroo Valley, if required, between 5pm and 7pm and also from 5am to 6am.

“Detours for light and heavy vehicles will be in place via the Illawarra Highway, Macquarie Pass and Princes Highway which are expected to add up to 80 minutes to journeys,” Mr Ward said.

“Motorists should plan their journey outside of the bridge closure times or travel via the detour route.”

There are more safety improvements and slope repairs planned for Moss Vale Road at Barrengarry Mountain from Sunday, May 27.

The road will be closed at night for two weeks from 7pm-5am from Sunday to Thursday so work can be carried out as safely and efficiently as possible.

The community will be kept informed with more details closer to the start of work.