Wadi Hanifa Project
Wadi Hanifa, Saudi Arabia
A LANDMARK STRUCTURE COMPLETED IN RECORD TIME
Located in the middle of the Najd Plateau, the Wadi Hanifa is the longest and most important valley of the KSA, running for 120 km from north to south, cutting through the capital of the country, Riyadh.
The new river crossing, built in 2015, represents a record for its construction speed. In fact the bridge has been completed in just one year, casting and launching one 77-metres-span every week. The viaduct crosses the 40m-deep valley with a length of approximately 512m. The two carriageways are 16.33m wide each.
DEAL TURN KEY SOLUTIONS AND THE ABILITY TO ADAPT AVAILABLE PIECES OF EQUIPMENT HAS ENABLED WADI HANIFA BRIDGE TO BE SUCCESSFULLY COMPLETED IN JUST ONE YEAR
Execution
Supply
The solutions
DEAL redesigned the viaduct and provided the engineering for all construction phases. We supplied a full package of construction equipment, managing times and costs.
In addition, we did fully supervise all the construction phases through our experienced technicians.
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The best construction equipment in a very short delivery time: this was the challenge:
DEAL adapted and customised launching and precast pieces of equipment which was available in our headquarters in Italy.
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In association with our subsidiary, TENSA, we provided structural engineering services and post tensioning materials.
Organizing and taking care of all construction phases, from the equipment shipping to bearings and expansion joints implementation, DEAL witnessed a great ability to manage all project steps
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We incorporated the Holy Month of Ramadan into the schedule, working through the summer in one of the world’s hottest areas, with temperatures reaching 50°C.
The location and related difficulties made the speed of execution particularly remarkable: the erection reached a completion rate of a 77m span each week following the initial learning curve
Request informationDEAL Engineering department provided a new design using all structures which had been built previously, in particular the piles and the foundation plinths of the piles and abutment.
The geometry and positions of the piles were preserved, while the superstructure, originally designed to be cast “in situ” on falsework, was completely re-engineered by DEAL.
The new solution involved precast segments, erected by launching equipment.
To reduce the time of supply of materials for the precast yard, we decided to adapt used equipment, designing, fabricating and shipping all pieces in a record time:
fabrication of the precast elements was able to start just four months after the award of the contract.
In the meantime, in March 2015, the available launching equipment was customised for the project and shipped to the site for the erection phase.
Overall, DEAL provided 1 Launching Girder for balanced cantilever, 1 Trailer for segment transportation, 4 casting Moulds, 1 Gantry Crane, Post-tensioning systems, Bearings and Expansion joints.
Deal was involved also in launching and precast supervision, quality control and post tensioning services.
The first carriageway was completed and opened to traffic in August 2015, while the entire project was delivered in November 2015.
