Underwater construction is a complex and difficult task, but engineers have developed several ways to build underwater … mostly by not building underwater at all.
A cargo ship leaving the Port of Baltimore collided with a bridge in a technological disaster that may have claimed the lives of up to six maintenance workers on the bridge at the time.
Transportation agencies plan for events like major bridge or highway collapses, but these events can disrupt traffic for months and affect residential neighborhoods as well as motorists.
A heat wave that pushed California’s power grid to the limit, and the water system failure in Jackson, Mississippi, are just two examples.
Aging U.S. infrastructure: Rust on the underside of the Norwalk River Railroad Bridge, built in 1896 in Norwalk, Conn., and scheduled for replacement starting in 2022.
AP Photo/Susan Haigh
What will the US$1.2 trillion infrastructure bill pay for? Here are some of the things it will help build, fix or remove.
The $1 trillion bill was a heavy lift for Speaker Nancy Pelosi (center). Next up: the budget reconciliation bill known as Build Back Better.
Anna Moneymaker/Getty Images
The government uses a process called public procurement. A professor of public policy explains how the process works and how it is increasingly used to achieve social goals.
The Denali Highway as it crosses the Susitna River.
Joe Sohm/Visions of America/Universal Images Group via Getty Images
Alaska is warming faster than any other U.S. state, and that’s causing problems, a team of bridge engineers and social scientists explains. The infrastructure bill in Congress would offer some help.
Crowds gather at dusk in Austin, Texas, to watch some 1.5 million Mexican free-tailed bats emerge to feed from their roost under the Congress Avenue Bridge.
Jeff Haynes/AFP via Getty Images
Bats roost under bridges and culverts across North America, so highway departments have to check for them before repairing bridges. A new AI tool makes those inspections faster and more accurate.
In the Netherlands, some flood control systems are designed to adapt to future climate change.
Dutch Ministry of Infrastructure and Water Management
With adaptive design, infrastructure is ready to be expanded in the future. It’s working for the Dutch.
Canada’s budgeting process needs to regard vaccination programs, to name just one example, the same way it regards investments in physical infrastructure like bridges and highways.
(CDC/Unsplash)
Patching concrete sidewalks, roads and bridges after every season of snow and ice is expensive. A team of engineers is now testing a new approach harnessing bacteria to patch the potholes and cracks.
Miami is investing hundreds of millions of dollars to raise roads in response to rising sea levels.
AP Photo/Wilfredo Lee
Infrastructure systems – roads, water treatment systems, power grid – can’t be built the same ways as in the past. What’s a better roadmap for the future?