When seawater penetrates concrete in road tunnels, a biofilm is formed that breaks down the concrete. This can lead to high costs and the risk of damage if stone and concrete drop from the tunnel ...

These concrete structures measure 217 meters (712 feet) long, 42 meters wide and nine meters deep, weighing in at a crushing 73,000 tons — equivalent to 10 Eiffel Towers.

The Đèo Ngang Tunnel expansion began construction in January with a total investment of VNĐ219 billion (US$8.6 million), ...

Tunnel slope collapse in Kolkata during heavy rainfall, no injuries reported, part of railway project construction.

BOSTON — MassDOT crews have inspected dozens of locations across the tunnel system after concrete debris fell from the ceiling of a Boston tunnel, officials said Monday. Several vehicles were ...

Construction of a pedestrian tunnel at Interlochen Center for the Arts will enhance safety and connectivity. A temporary road closure is scheduled for August.

Norway is building what is to become the longest and deepest road tunnel under the sea. The Rogfast project, measuring 26.7 kilometers (about 16.5 miles) and descending to 392 meters (nearly 1,300 ...

Drivers are urged to take alternate routes. In March 1999, concrete slabs fell from the I-195 tunnel under the Fall River Government Center. No one was killed.

Concrete debris fell from the Prudential Tunnel in Boston Friday afternoon, damaging several vehicles. The incident was captured by a MassDOT camera. State Police said the debris fell into the ...

Boston's tunnels are safe, says Mass DOT inspection after video shows concrete falling More than 150 locations in the Boston-area tunnel system have been inspected after video captured concrete ...

JAW-dropping new images showcasing the plans for the upcoming Lower Thames Crossing have been released. The UK government is planning to build the huge, motorway-style tunnel in a project that ...

Large concrete culvert pieces waiting to be set into place for a new pedestrian tunnel under the railroad tracks between Bandemer Park and Barton Nature Area in Ann Arbor, as seen along the Border ...