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Improving road drainage in Iowa

August 17, 2015

In Iowa, the Simex CT 2.8 vibrating compactor wheel is playing an important role in building a subsurface, road drainage system The topsoil of Iowa is famous for its fertility, a characteristic that explains the high agricultural productivity of this state located in the American Midwest. However, the composition of the soil lends itself poorly to the dispersal of rainwater, as its fine granulometry and low level of permeability (12.7cm/hour according to the American Association of State Highway and Tran

Al Jaber and Makhlouf mark reliability at Doha Airport

August 14, 2015

Airport markings play an important role in providing guidance to pilots when an aircraft is coming in to land or taxiing, as well as for guiding ground vehicles. Ensuring these markings are in good condition is crucial for safety and requires an effective maintenance strategy by the airport. The quality of the signs and markings regulating traffic at an airport can optimise operating efficiency as well as safety. The visibility of signs, especially night visibility, should meet the requirements of the relev

Australian firm uses recycled feed material for asphalt

August 14, 2015

Innovations in asphalt plant technology will help boost the use of recycled asphalt. Mike Woof writes. An Ammann asphalt plant located in Australia has been successful in using a high percentage of recycled feed materials. The Australian producer Downer recently created and laid an asphalt mix consisting of 99% recycled materials, including feed from somewhat unusual sources. The feed included toner from printer cartridges, tyres and glass and this is thought to be the first time a mix has been produced usi

Major upgrade for Chicago O’Hare Airport

August 14, 2015

Internationally, airports are being upgraded and expanded to increase capacity and safety – Mike Woof writes. All around the world, airports are being expanded and upgraded, both to cope with massive increases in passenger numbers and also to handle larger aircraft. Runways have to be rebuilt with stronger structures and surfaces to handle greater air traffic volumes as well as increased loads from larger aeroplanes. Building airport runways, however, poses many challenges for construction crews. Paving qua

Almost gone: Canada’s old Port Mann Bridge deconstructed

August 14, 2015

Three years ago a welder’s cut halved Canada’s old Port Mann Bridge. David Arminas reports from the banks of the Fraser River. By the time this issue of World Highways reaches you, one of Canada’s iconic steel arch bridges will be a shadow of its former self. It’s been a three-year demolition job since the first cut across the deck of the old Port Mann Bridge just outside the city of Vancouver on Canada’s Pacific coast. A new 10-lane 2.2km Port Mann Bridge opened in 2012 (see box). It runs parallel to the o

Chile approves construction of the Agua Negra project through the Andes

August 13, 2015

Plans for a cross-continent upgraded road were recently boosted when Chile’s senate approved construction of its share of a major US$1.6 billion tunnel in the Andes Mountains. The Chilean approval comes after the Argentinian government gave the nod in March for construction on its section of the Agua Negra project. A tender for specific design work could be put out by September, according to the Argentinian newspaper Diario de Cuyo. The approvals resolve a number of bilateral issues including taxation

Contractors win Polish road tender

August 13, 2015

Two contracts have been awarded for work on sections of Poland’s S7 dual carriageway. Contractor Metrostav has won the tender process for the construction of a stretch of the S7 dual carriageway. The 20km section of the route Metrostav has the contract for lies between Gdansk's southern ring-road and Elblag. The value of this project is anticipated as being in the region of €392 million. Meanwhile contractor Budimex was won the package of works for the second section of the S7 dual carriageway. This 19km lo

New Zambezi River bridge to link Botswana and Zambia

August 13, 2015

Work is now underway on the new Zambezi River crossing, which will improve transport links between Botswana and Zambia. The new bridge crosses the river close to the Zambian town of Kazungula and is costing some US$259.3 million to construct. The bridge will be 923m long and will carry both rail and road traffic, with border posts located at either end. The project is being carried out by South Korean contractor Daewoo Engineering and Construction. Financing for the project is being provided by the African

Taiwan bridge being planned

August 13, 2015

A major new bridge project is planned in Taiwan. The new Danjiang Bridge will cost some US$482.35 million to construct. The project should be complete and open to traffic by the end of 2020. The bridge will be some 12km long in all, with a 900m central section. Work on the project is to be carried out by local firm Sinotech Engineering Consultants in combination with its German partners. In all there were six bids for the project.

New Serbia highways on track for completion

August 12, 2015

Serbia’s Obrenovac-Preljina highway is due to be completed by 2017. Serbia’s Ministry of Construction says that the Obrenovac-Preljina and Ljig-Preljina routes are being financed with the aid of a €274.5 million loan from China's Exim Bank, worth a total of USD 301mn (EUR 274.48mn), while the state budget secured a total of €30.1 million. Meanwhile, €300 million of funding has been secured from Azerbaijan for construction of the Ljig-Preljina route. Corridor 11, between Obrenovac and Preljina will be 105km