Mooney Mooney Bridge

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Coordinates: 33°25′59″S 151°15′14″E / 33.433°S 151.254°E / -33.433; 151.254
Source: Wikipedia, the free encyclopedia.

Mooney Mooney Bridge
motorway
History
Designer
Constructed byEnpro Constructions
Inaugurated14 December 1986 (1986-12-14) by Bob Hawke, Prime Minister of Australia
ReplacesOld Mooney Mooney Creek Bridge
(concurrent use as Pacific Highway) (B83)
Location
Map

The Mooney Mooney Bridge, officially the Mooney Mooney Creek Bridge, and popularly known as The NSW Big Dipper Bridge, is a twin

Central Coast of New South Wales, Australia. The concrete box girder bridge was opened on 14 December 1986 by the Prime Minister of Australia, Bob Hawke, and is owned and maintained by Transport for NSW, an agency of the Government of New South Wales
.

The Pacific Motorway is the main road link between Sydney, the Central Coast and the Hunter Region. The only other road that links all three regions is the Pacific Highway (B83) which from Cowan to Kariong follows a scenic winding route.[1]

History

The Pacific Highway (now known as B83) served as the only highway route between Sydney and the Central Coast and the Hunter Region. The original 1930 two-lane steel truss bridge carried the Old Pacific Highway across Mooney Mooney Creek. This bridge remains in concurrent use and is located downstream of the existing Mooney Mooney Bridge.[2] With population and traffic growth, the scenic winding highway route was beset by traffic jams, especially at peak holiday times.[3]

Whilst planning for a new high-speed freeway-style traffic link between

Brooklyn Bridge, connecting the Berowra-Hawkesbury River and Hawkesbury River-Calga sections.[3]

Concurrently, the freeway was opened from

Doyalson. The 15-kilometre-long (9 mi) section between Calga and Somersby, including the new Mooney Mooney Creek bridge was opened on 14 December 1986, as thousands of people walked across the twin bridges. The freeway carried two lanes heading north and two lanes heading south. Additional developments were made as follows:[3]

Design

Mooney Mooney Bridge was designed by Bruce Judd of the then NSW Department of Main Roads and built by Enpro Constructions by the free cantilever method of post tensioned concrete. It consists of twin bridges, each bridge with a main span and two approach spans. The span at the western end of the bridge is 135 metres (443 ft) long, the main span is 220 metres (722 ft) long and the eastern span is 131 metres (430 ft) long.[4]

The design has been said to demonstrate how good engineering design and good aesthetics are synonymous, and has been used as a standard in the design of bridges throughout New South Wales. They employ a two rail parapet which optimises views of the landscape. The bridges were designed with the natural surroundings in mind and form a simple uncluttered shape so not to detract from the natural bushland of the national park. The three span haunched girders on the bridge were critical to this as were the multiple piers that provide character and strength.[5][6]

Incidents

The Mooney Mooney Bridge has been the site of several

accidents, resulting in the Pacific Motorway being closed to traffic and causing delays. Some of these accidents have prompted debate on whether a new road should be built to supplement the existing freeway.[7]

On 23 October 2004 a semi-trailer's brakes failed coming down the Freeway and caused a pile-up involving 35 vehicles that had slowed down as a result of a car accident on the other side of the bridge. This accident resulted in the death of a woman.[8] On 12 February 2007 another accident occurred when a truck was travelling down the freeway and lost control approaching the bridge, smashing through a guard rail and plunging 30 metres down an embankment at the side of the bridge.[9]

The Mooney Mooney Bridge, because of its height, has been susceptible in the past to people committing suicide. As a result, a fence was erected along the side of the bridge to prevent

people jumping off. This fence was erected in 2003 and cost A$1,000,000.[10]

Gallery

  • The Mooney Mooney Bridge from a driver's perspective - Heading North towards Newcastle.
    The Mooney Mooney Bridge from a driver's perspective - Heading North towards Newcastle.
  • Mooney Mooney Bridge - M1 south bound (viewing NW) from the Pacific Highway overpass. The bridge can be identified by the darker shade of bitumen.
    Mooney Mooney Bridge - M1 south bound (viewing NW) from the Pacific Highway overpass. The bridge can be identified by the darker shade of bitumen.

See also

References

  1. ^ "NSW State Route 83". ozroads.com.au. Retrieved 13 February 2007.[self-published source]
  2. ^ "Old Mooney Mooney Creek Bridge on the Old Pacific Highway". Transport for New South Wales. Government of New South Wales. February 2019. Retrieved 6 April 2020.
  3. ^ a b c Stubbs, Cathy (1 September 2015). "M1 Sydney to Newcastle motorway historic achievement in NSW roads infrastructure". Central Coast Gosford Express Advocate. Retrieved 6 April 2020.
  4. ^ Mooney Mooney Bridge (1986) at Structurae. Retrieved 13 February 2007.
  5. ^ "Bridge Aesthetics – Design guidelines to improve the appearance of bridges in NSW" (PDF). NSW Roads & Traffic Authority. Retrieved 14 February 2007.
  6. ISBN 0858251825
    . Retrieved 6 April 2020.
  7. ^ "Double Vision". Central Coast Express Advocate. Archived from the original on 28 September 2007. Retrieved 13 February 2007.
  8. ^ "F3 reopens after fatal smash". The Sydney Morning Herald. 23 October 2004. Retrieved 13 February 2007.
  9. ^ "Truck Crash – Mooney Mooney Bridge". New South Wales Police (Press release). 23 October 2004. Retrieved 13 February 2007.
  10. ^ "What's it cost to save a man's life?". Dads in Distress. Archived from the original on 22 February 2011. Retrieved 13 February 2007.

External links

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