Wall Street Journal: It’s time the U.S. got a lot smarter. Federal, state and local governments are about to pour tens of billions of dollars into the nation’s infrastructure. The big question: Will we simply spend the money the way we’ve been doing for decades — on more concrete and steel? Or will we use it to make our roads, bridges and other assets much more intelligent? Imagine highways that alert motorists of a traffic jam before it forms. Or bridges that report when they’re at risk of …