It initially passes through the suburbs of Rocklea, Oxley and Darra in south west Brisbane before reaching the eastern suburbs of Ipswich such as Redbank Plains, Goodna and Riverview. The Motorway is directly connected to the M5Centenary Motorway at Darra and the M2Logan Motorway at Gailes. In 2008, it was estimated that 80,000 cars use the road daily.[1] In late 2010, this figure had risen to close to 100,000 vehicles per day.[2] In 2002, the morning peak traffic volume was greatest between 7:00 am and 8:00 am. By 2008, the morning peak traffic volume peaked between the hours of 5:00 am and 6:00 am.
The motorway was formed from the original Ipswich Road/Cunningham Arterial Road, which was upgraded during the 1980s and 1990s to form a grade-separated motorway-grade route. The Ipswich Motorway was commissioned on 17 May 1994.
This road consists of two separate state-controlled roads as defined by the Department of Transport and Main Roads (TMR). The part from Rocklea to Goodna is named Cunningham Arterial Road (number U16) and the other is named as part of the Cunningham Highway (number 17A). Road U16 is part of the state strategic network, and road 17A is part of the national network.[3][4]
With the Federal Government funding provided, the upgrades were completed from the Centenary Motorway interchange to the Logan Motorway interchange.
The upgrade from four lanes to six between Wacol and Darra was one of the Australian Labor Party's key 2007 federal election promises.[7] The upgrade included widening the Ipswich Motorway from four to six lanes, transformation of the Centenary Highway Interchange to a free-flowing multi level system interchange and work on adjoining service roads that aims to reduce traffic on the motorway by up to 20%.[1] The Federal government has contributed a total of $3.1 billion for the upgrade.[6] The Wacol to Darra section of the motorway was officially opened on 18 April 2010.[8]
The final section to be upgraded is a 7 kilometres (4.3 mi) stretch between Darra and Rocklea with its planning finalised in 2011.[5] Stage 1 of the Ipswich Motorway upgrade, the 3km section between Granard Road, Rocklea and Oxley Road, Oxley, has commenced in 2017. Construction works are scheduled for completion in late 2020.[11] This work was completed in April 2021 at a cost of $400 million.[12]
The proposed Goodna Bypass or Northern Bypass of the western section of the M2 was cancelled following the 2007 elections.[7] This 7 kilometres (4.3 mi) section of new Motorway would have taken traffic from the Warrego and Cunningham Highways to the Logan Motorway interchange including four crossings of the Brisbane River.
^ ab"Ipswich Motorway Overview". Nation Building Program. Department of Infrastructure and Transport. 11 October 2010. Archived from the original on 27 February 2012. Retrieved 5 November 2011.
