CLEM7 - 2011 AUSTRALIAN CONSTRUCTION ACHIEVEMENT AWARD i Scope of Work The Clem Jones Tunnel (CLEM7) is alternate route to the many roads that were Tunnel construction included: Brisbane’s first major road tunnel and the impassable or closed due to flooding. ■■ 41 evacuation cross passages between the longest and most technically advanced The Project was delivered by the Leighton two mainline tunnels every 120m; tunnel in Australia. The project has an overall Contractors and Baulderstone Bilfinger ■■ A long passage for evacuation from the length of 6.8km and links the Inner City Berger Joint Venture (LBBJV) under a lump Shafston Avenue ramps; Bypass (ICB) and Lutwyche Road in the sum design and construct (D&C) contract. A ■■ Five underground substations, each north of Brisbane to the Pacific Motorway ‘fast track’ design and construction approach consisting of four individual tunnels and Ipswich Road in the south, with an entry was adopted, which enabled LBBJV to excavated in the space between the two and exit ramp at Shafston Avenue. deliver the Project seven months ahead of mainline tunnels; The CLEM7 is the first critical component of schedule and on budget for their client ■■ A dedicated tunnel in each tube, beneath the Brisbane Lord Mayor’s TransApex vision RiverCity Motorway (RCM), who is in a the road surface for cabling; and to ease congestion and cater for the city’s Public-Private Partnership with Brisbane City future traffic needs. The tunnel, which has Council (Council). The Project cost $3 billion, ■■ A smoke duct in the ceiling of each tunnel, 2 the capacity to carry more than 100,000 which includes financing costs and the 9.2m in cross section, to extract smoke in vehicles a day, bypasses Brisbane’s CBD $2.1 billion of design and construction cost. an emergency and to manage air quality in congested traffic. and 24 sets of traffic lights, reducing travel The scope of work included excavation and The tunnel route runs beneath the Brisbane time by up to 30%, cutting fuel costs, vehicle fitout of two parallel twin-lane tunnels, 4.8km River. The majority of the tunnel is designed emissions and improving safety. During the each in length, as well as links to Brisbane’s and constructed as a fully tanked structure, recent devastating floods in Brisbane the road network by 18 bridges, six entry and with only short sections designed as drained tunnel proved to be an important asset, exit portals and 155,000m2 of road, including tunnels. providing evacuees with a vital and secure a three-level interchange. CLEM7 - 2011 AUSTRALIAN CONSTRUCTION ACHIEVEMENT AWARD 1 The tunnel has state-of-the-art mechanical ■■ Control Systems for traffic management and electrical (M&E) systems, including: and plant management, including a Tollroad Control Centre with a 24 hour, 7 ■■ High and low voltage reticulation including two 33kV surface intake substations and days-a-week manned control room; five underground substations; ■■ Tunnel pumping stations, including two low point sumps in the mainline tunnels ■■ Tunnel and emergency lighting systems, 3 street lighting and architectural lighting; providing a total volume of 270m , another major sump at the base of the southern ■■ Tunnel ventilation, including 119 jet fans vent tunnel with a volume of 545m3, as well (comprising 98 off 30kW jet fans in the as smaller pump stations; mainline tunnels, and 21 off 45kW jet fans ■■ in the Shafston Avenue ramps) and two A groundwater treatment plant to treat surface ventilation stations, each housing tunnel groundwater from the drained five 150m3/s normal ventilation extraction sections of tunnel prior to discharge into fans, as well as five 100m3/s smoke local waterways; and extraction fans; ■■ Four ambient air quality monitoring stations to provide real-time monitoring at ■■ Communications systems within the tunnel, including radio rebroadcast, ground level and elevated locations in emergency telephone, mobile telephone, proximity to each of the ventilation outlets. two-way radio and PA systems; The Northern Surface Works included: Aerial view of Northern Surface Works ■■ Traffic Management Systems, including ■■ Widening of Lutwyche Road; electronic signage, overheight vehicle ■■ Construction of 12 new or widened bridges ■■ Construction of surface buildings including detection and warning system and CCTV; to connect the CLEM7 with the newly the Tollroad Control Centre, 30m high ■■ Automatic Video Incident Detection widened Lutwyche Road and Inner City northern ventilation outlet, surface System; Bypass (ICB), including a three level substation and fire pump room; ■■ Fire Systems, including detection (both interchange; ■■ Construction of a re-routed shared point type detectors and fibre optic “fire ■■ Construction of the northern portal and pedestrian and cyclist path; and wire”), suppression (zoned fire deluge approach ramps; ■■ system within the traffic space and foam Erection of noise barriers on Hale Street. suppression in the low point sumps) and associated fire pump stations/fire brigade boost points; CLEM7 - 2011 AUSTRALIAN CONSTRUCTION ACHIEVEMENT AWARD 2 ■■ Construction of the Ipswich Road pedestrian underpass; ■■ Widening of the Pacific Motorway to accommodate the tunnel connection, including widening of three bridges (including a rail bridge) and demolition of a footbridge across the motorway; ■■ Construction of an additional northbound lane on the Pacific Motorway; ■■ Construction of the new Harrogate Street footbridge across the Pacific Motorway; ■■ Construction of a dedicated 1.4km long bikeway and pedestrian pathway; and ■■ Construction of the 44m high southern ventilation outlet and surface substation. Additional surface works scope included $24 million of Public Utility Plant (PUP) relocations, local road adjustments and Aerial view of Central Surface Works Aerial view of the Southern Surface Works extensive landscaping works, including the creation of a new park adjacent to the southern ventilation outlet. The Central Surface Works included: The Southern Surface Works included: The scope also included the roadside ■■ ■■ Widening of Shafston Avenue to allow for Construction of the southern portal in the free-flow electronic tolling system. The back one lane entering the tunnel and two lanes median of Ipswich Road; office scope of the tolling system, which exiting the tunnel in the median; and ■■ Widening of Ipswich Road to maintain the includes all the business elements, including ■■ Construction of the Shafston Avenue same number of through traffic lanes; payments and toll evasion notices, was portals. ■■ Construction of an underpass for delivered by RCM. northbound Ipswich Road traffic to allow the ramps to be constructed from Ipswich Road and the Pacific Motorway; CLEM7 - 2011 AUSTRALIAN CONSTRUCTION ACHIEVEMENT AWARD 3 Unique attributes of the CLEM7 ■■ The first project in Australia to use two ■■ Use of a radio frequency identification large double shield Tunnel Boring (RFID) tagging system during Machines (TBMs) driving simultaneously construction to transmit a person’s through hard rock, with a compressive location wirelessly. The system was strength of over 100MPa. designed to monitor all people and assets in the tunnel to improve safety ■■ The largest major civil infrastructure project in Australia to rely solely on and operational efficiency. recycled water for construction. ■■ Installation of cable tunnels during the TBM operation, allowing mechanical ■■ Reconfiguration of the arrangement and staging of construction on the Pacific and electrical services to be installed in Motorway, Woolloongabba to mitigate parallel with civil construction. the disruption to the 150,000 vehicles ■■ An improved loop ramp configuration at Southern Entrance Portal Canopy that use it daily. the Shafston Avenue entrance which helped reduce program time and ■■ Development of a real-time noise and The Project included landmark urban design vibration monitoring system utilising geological risk. elements, including: modem connected equipment with a ■■ Re-design of the ramps at the ■■ The southern and northern ventilation web-based interface to verify Woolloongabba and Bowen Hills outlets, which use the Poinciana and predictions. connections to improve connectivity, Jacaranda trees as inspiration for the traffic flow and reduce construction risk. ■■ World leading fire and life safety design design of the façade, fitting the brief ‘to with both tunnels fitted with longitudinal ■■ Induction of more than 13,000 people, complement and celebrate the city’s ventilation, deluge and smoke extraction with another 3,800 undertaking natural assets’; and and a state-of-the-art smoke duct. recognised training programs. ■■ Spectacular portal canopies that combine function and art by providing a transition between the light outside and inside the tunnel, allowing motorists eyes to adjust to the driving environment. CLEM7 - 2011 AUSTRALIAN CONSTRUCTION ACHIEVEMENT AWARD 4 Type of Contract Used In April 2006, Council entered into a Public- The Project Deed included a number of Side Private Partnership with RCM to finance, Deeds and Agreements to accommodate the design, build and operate the CLEM7 for a significant interests of key stakeholders and period of 45 years. In turn, RCM contracted authorities, including: LBBJV to design and construct the Project ■■ Queensland Department of Transport and under a hard dollar contract that was “back- Main Roads (DTMR), who own and operate to-back” with the requirements of the Project the Pacific Motorway, which required