The Technology That Promises to Save America’s Decaying Infrastructure

On an evening in August 2007, Minneapolis commuters sat in rush-hour traffic on the I-35 highway bridge that spanned the Mississippi River. Some drivers probably glanced at the construction crew resurfacing the concrete deck of the eight-lane, steel truss structure. Suddenly, a terrible wrenching noise sliced through the summer night. People screamed and honked their horns. A section of the bridge plummeted 60 feet straight down into the river, and the rest of the structure crumpled, sending 50 cars sliding into the water.

The collapse, which resulted in 13 deaths and 145 injuries, pointed to the importance of repairing aging infrastructure. As a result, Minnesota’s Department of Transportation (MnDOT) looked into new ways to conduct their biennial inspections on the state’s 12,961 bridges that carry traffic (830 of which urgently need repairs). Recently, drones replaced workers at several inspection sites, allowing the agency to get a closer look at the structures without closing a lane of traffic and sending a worker over the edge.

The eight lane bridge spanning the Mississippi River near Minneapolis’s downtown was undergoing repair work when it collapsed during the evening rush hour.

MnDOT uses the senseFly eXOM drone, a four-pound machine resembling a bumblebee that was specially built for mapping and inspection. Hooked up with an LED light and a camera, the drone can illumine dark spaces and capture detailed pictures. Oftentimes, the images have better resolution than inspectors can snap with a digital camera, while either perched atop a cherrypicker or suspended by rope underneath a bridge, says Jennifer Zink, a state bridge inspection engineer. A drone’s flight controller can toggle with an infrared camera, giving heat-sensing capabilities to pick up on distressed spots in the concrete.

The technology not only gathers better data, it also keeps workers safe. Even when traffic lanes are closed, a surprising number of drivers head into a work zone, swerving away from disaster at the last minute. The drone, on the other hand, steers clear of any objects, automatically bouncing away when it detects something closer than one to five feet.

The site of the collapse, Blatnik Bridge in Duluth, Minn., now uses drones to inspect the infrastructure.

Zink says the MnDOT team has been excited to innovate with new technology, but the law still lags behind, restricting when and where they can fly. There’s a lot of bridges in the state, Zink says, but with drones, managing their safety doesn’t seem like such a high-flying task.

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The State That Plans to Issue Digital Drivers’ Licenses

Technology may soon encroach the rite of passage of getting a driver’s license, turning a once antiquated tradition into another digital download.
The Iowa Department of Transportation (DOT) will begin rolling out a highly secure app that features a resident’s driver’s license next year, according to DOT Director Paul Trombino.
Unveiled at the state agency’s budget meeting, the new app will serve as “an identity vault app” using a pin number for verification, the Des Moines Register reports. The DOT plans to allow the use of  digital licenses during traffic stops and at airport security screenings, but also as a way to reconnect with citizens.

“I think the longer term prospect is if you can really be successful in establishing a driver’s license as an app, it really transforms the way we can interact with the customer,” says Mark Lowe, director of the Motor Vehicle Division at the state’s DOT. “It really becomes instead of a thing in your pocket, it becomes a customer relationship.”

The state agency plans to internally build and test a prototype type over the next six months, according to Government Technology. The goal is to introduce the app as an alternative to temporary permit licenses granted before permanent licenses are mailed out, eventually hoping to replacing traditional licenses as well.

With more residents reliant on smartphones, Trombino contends it’s a logical step in updating government practices. The state agency is exploring other forms of technology through a program to install dashboard cameras on snowplows, an initiative for “paperless construction projects,” more driver’s license kiosks and a new type of bridge building via modular construction. Iowa is also one of more than three dozen states that enables drivers to carry electronic proof of insurance.

Digital licenses also help allay concerns over stolen licenses by eliminating the chance of losing a physical card and introducing more security with the use of biometric data, Lowe adds. Another benefit includes saving time. For example, changing an address wouldn’t require an in-person visit to the DMV, but instead a simple update on the app.
While the agency still has some kinks to work out in developing the app, Lowe contends the idea makes sense for the modern lifestyle.

“It came from us having mobile devices and using them the ways that everybody is using them and really thinking about the possibilities,” Lowe says. “It’s hard to use your device and use it for mobile boarding passes and not think ‘why couldn’t I carry my license this way?’”

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