Plan revealed for vital new Brisbane River bridge
SEQWATER has announced plans to build a new dedicated traffic bridge over the Brisbane River at Mt Crosby Weir.
Under the $30 million Mt Crosby plan, the existing single lane vehicle bridge will be maintained and repurposed as a dedicated pedestrian and cyclist bridge.
Seqwater is developing a master plan for the Mt Crosby East Bank precinct to reduce the flood risks to critical water infrastructure, while also celebrating the area's rich cultural heritage.
The new bridge will now be incorporated into the draft master plan with the community given the opportunity to provide feedback before the plan is finalised.
Seqwater Chief Executive Officer Neil Brennan said the new bridge would address safety risks at the Mount Crosby Weir and improve connectivity for all road users.
The existing bridge was cut off during the 2011 floods, and the new planned bridge will be built 2m higher than the existing crossing.
Seqwater introduced a nine-tonne weight limit on the weir bridge in 2015 as a safety precaution following engineering assessments of the structure.
"The Mount Crosby Weir was constructed in 1926 and served as a tramway, allowing coal to be transported to the steam-powered pump station. Today, the bridge over the weir is open to traffic and locals regularly use it to access the sporting fields on the other side of the river," Mr Brennan said.
"The option of a new bridge provides greater flood resilience than the existing weir bridge and allows access for heavy vehicles such as school buses. It also allows the weir bridge to be re-purposed for pedestrians and cyclists and will connect to a new footpath along Stumers Road."
Although subject to change, it is expected the new bridge will be about 13m high - 2m higher than the existing bridge.
It will be 190m long and 9m wide, and will be constructed 15m downstream of the weir.
Seqwater said while the height of the new bridge would reduce the risk of the road becoming inundated during severe weather events, it would be designed to be inundated in large and extreme weather to allow it to be reopened as soon as flood waters pass.
If another event like 2011 occurred, the bridge would be inundated and would have to be closed temporarily.
Mr Brennan said the community was invited to provide feedback on the draft master plan earlier in the year.
"We found many locals were supportive of improved access to community facilities and preserving the rich cultural heritage of the area. There was also support for increased safety and accessibility for motorists, pedestrians and cyclists along Stumers Road," he said.
The draft master plan involves a series of projects over the next five years including a new substation and high voltage switch room on higher ground, refurbishing heritage buildings within the area, and installing a new structure to protect critical water infrastructure from debris in a flood.
Mr Brennan said Seqwater would be working with stakeholders over the coming months to finalise the master plan, which is expected to be lodged by the end of 2018.
Seqwater will also be holding a drop-in information session at the Mt Crosby Bowls Club, Mt Crosby Road on Thursday 18 October between 4pm and 6pm to answer questions about the master plan and bridge projects.
To find out more about the master plan, visit yoursay.seqwater.com.au/mtcrosby