|CLIENT||Florida Department of Transportation|
Situated on Dodge Island, the port of Miami is currently served by just one main road. The Port of Miami tunnel will provide a second access road to the port of Miami, which is essential for its development.
A 2 x 1,100m lane twin-tube subsea road tunnel, this new access road will be connected to the MacArthur Causeway and will become the main road for freight traffic, thus relieving the Downtown area of the numerous heavy trucks driving through.
The design-build of this tunnel is being performed as part of a 35-year public-private partnership by Miami Access Tunnel, consisting of investment funds from Meridiam and Bouygues Travaux Publics.
The work includes widening of an 800m stretch of the MacArthur Bridge through a 3.00m inward extension of the roadway in each direction.
Two tunnels will be built, each 1,100m long with a 12.89m external diameter, performed using an earth-pressure-balance tunnelling machine, as well as access ramps.
Four cross passages between the tunnels, two fire-access shafts and operating buildings are also being built.
The development of connections to the port’s road network, the performance of electromechanical work for the underground facilities (ventilation, fire detection and prevention, safety door, electricity supply, surveillance and communication), an automatic traffic control system, drainage for the tunnel and access ramps, relocation of utilities affected by the project and upgrading of the port’s railway line, complete the overall job.