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Preferred access arrangements for Gerringong and Berry

The RTA studied social, economic, environmental and engineering aspects to identify the most appropriate ways to connect Gerringong and Berry to the upgraded highway. Preliminary access options for each town were displayed in October 2008.

Community feedback led to a number of alternative arrangements being developed for Gerringong and considered during the selection process.

The project team considered the outcomes of a November 2008 value managements workshop, community feedback and technical issues before selecting the preferred access arrangements. The Gerringong and Berry preferred access arrangements report is now available. Download here (1.77 MB)


Gerringong access arrangements


The preferred access arrangement for Gerringong is a modification of the options displayed for community comment in October 2008.

It includes a southern interchange at Belinda Street linked to Willowvale and Baileys Roads by a service road and a northern interchange at Rose Valley Road linked to Fern Street by an access road.


Southern access
Features
  • Four-way movement:

    • Southbound off ramp to Belinda Street.

    • Southbound on ramp from Belinda Street.

    • Northbound off ramp to Willowvale Road/Belinda Street.

    • Northbound on ramp from Belinda Street.

  • Underpass at Belinda Street.

  • Provides two way service road between Willowvale Road and Belinda Street.

  • Uses existing Belinda Street rail underpass.

Benefits
  • Separates local movements from highway movements.
  • Accommodates cattle/farm access at Crooked River Bridge.
  • Services south Gerringong, Gerroa and Shoalhaven Heads with all movements.
  • All movements have improved flood immunity.
  • Retains all existing traffic movements.
  • Interchange at Willowvale Road provides safer access to Belinda Street and Gerringong.


Northern access
Features

  • Three way movement:
    • Southbound off ramp to Rose Valley Road/Fern Street.
    • Northbound off ramp to Rose Valley Road.
    • Northbound on ramp from Fern Street/Rose Valley Road.
  • Provides two way service road between Rose Valley Road and Fern Street.
  • Overpass for Rose Valley Road.
  • Uses topography to minimise visual impact of the Rose Valley Road junction.
  • Provides bus turning facility at Rose Valley Road.
  • Eliminates level crossing with bridge over rail line.
  • Southbound access at Fern Street removed due to low demand and good alternative via Belinda Street.

Benefits

  • Separates local road movements from highway movements.

  • Increased safety by removing at grade highway junctions and the rail level crossing at Fern Street.

  • Interchange location at Rose Valley Road avoids poor ground conditions at Omega Flat.

  • The interchange at Rose Valley Road provides safer access to Fern Street and Geringong.


Berry access arrangements


The preferred access arrangements for Berry involves six ramps, four of which provide entry and exit movements close to the existing access points.

The northern accesses closely follow the existing highway and rely on the flood-prone road around Broughton Mill Creek. To maintain access to Berry in times of flood, these two accesses will have flood immune alternatives.

The first would be a northbound ramp from Kangaroo Valley Road to the highway which would also cater for future residential development to the west and north-west of Berry .

The second would be a southbound ramp from the highway into Alexandra Street, which would provide a second chance access into Berry from the north.

Southern access

Features
  • Three way movement:
    • Southbound on ramp from Queen and Victoria Street.
    • Northbound off ramp to Huntingdale Park Road.
    • Northbound on ramp from Kangaroo Valley Road.
  • Kangaroo Valley Road overpass above upgraded highway.

Benefits
  • Maximises preservation of Mark Radium Park.
  • Access to upgrade from Victoria Street facilities egress from mark Radium Park, The Arbour and Showground
  • Retains access to Mark Radium Park from Queen Street as rest stop.
  • Off ramp to Huntingdale Park Road avoids less desirable 180 degree curves on other options.
  • Second northbound on ramp services future growth area of Berry and provides northbound exit from Berry with improved flood immunity.
  • Potential for bridge design to incorporate landscaping and dedicated cycle and pedestrian paths.

Northern Access

Features
  • Two way movement:
    • Two southbound off ramps to Berry.
    • One northbound on ramp from existing highway.

  • Northbound on-ramp passes under the bridge over Woodhill Mountain Road.

  • Uses topography to minimise visual impact by placing the upgrade in cut on the ridge.

  • Compact ramp configuration.

  • Southbound ramp into Berry using the existing highway to be designed and signposted as primary entry.

  • Southbound ramp into Alexandra Street designed as flood immune alternative and second chance entry.

Benefits
  • Minimises bridge height crossing Broughton Mill Creek and Woodhill Mountain Road.
  • Maitains local north and southbound traffic patterns through Berry.
  • Retains existing 'gateway' to Berry fromthe north.
  • Provides southbound 'flood free' access.


What are the next steps?

There will be further opportunities for the community to make comments on the upgrade program for the Princes Highway between Gerringong and Bomaderry. The RTA currently proposes that the upgrade program will comprise three separate projects for the purpose of concept design and environmental assessment.

The type of environmental assessment for each project will reflect the level of environmental impact.

Project A – from Mount Pleasant to Toolijooa Road
Concept design and environmental impact assessment are currently underway and are expected to be displayed for community comment in early 2010.

Project B – from Toolijooa Road to south of Berry
Concept design and environmental impact assessment are currently underway and are expected to be displayed for community comment following Project A.

Project C – from south of Berry to Bomaderry
Concept design and environmental investigations are currently underway for the purposes of defining the highway boundaries. Timing of display of concept design and environmental impact assessment for this project has not yet been decided.



Construction
Subject to planning approval for each project, detailed design and land acquisition will be completed. A staging plan and construction schedule will be developed, taking into account available funding.


The final aspects of the preferred option will be on display from Monday 15 June 2009 to Friday 26 June 2009 at the following locations:


Staffed displays

RTA Berry Project Office
Broughton Court
Shop 3/113 Queen Street, Berry
Monday to Friday 9am to 4pm

There will be maps of the preferred option and 3D animations of the access arrangements available for viewing.


Other display locations

Kiama Council
11 Manning Street, Kiama
Monday to Friday 8.45am to 4.15pm

Shoalhaven City Council
36 Bridge Street, Nowra
Monday to Friday 9am to 5pm

Kiama Library
7 Railway Parade, Kiama
Monday, Wednesday, Thursday and Friday from 9.30am to 5.30pm
Tuesday from 9.30am to 8pm
Saturday from 9.30am to 2pm

Gerringong
Shop 3/129 Belinda Street, Gerringong

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