$2 billion Baltimore bridge rebuild is test case for new national debate over infrastructure spending

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Three months after Baltimore's Francis Scott Key Bridge collapsed – killing six people, shutting a major port and disrupting vehicle traffic along the Eastern Seaboard — local, state and federal officials began a massive effort to make the best out of an unimaginable situation.

"We're working with construction companies and designers, and working with the people of our state, to think about what is it that we hope for this almost two-mile long bridge," Maryland Governor Wes Moore told CNBC.

The process passed a major milestone last week when crews managed to reopen the main navigation channel to the Port of Baltimore, the nation's largest port for vehicles. That process alone was initially forecasted to take up to a year.

"It didn't take 11 months. We got it done in 11 weeks, because we work together," Moore said.

But now, in many ways, comes the hard part. Officials hope to use the disaster as a chance to reconsider all the infrastructure in the region.

"This is going to be an important opportunity for our state to look at all of our infrastructure, our roads, our bridges, our tunnels. You know, our critical infrastructure is imperative for our economic growth and development," Moore said.

Some of that planning is already underway. Last month, the Maryland Transportation Authority issued its first request for proposals to rebuild the bridge. The plan is to use what officials call a "Progressive Design-Build Approach," in which the design and construction firms are hired at the same time and work together throughout the process. This efficiency could allow a new bridge to be built in just four years — breakneck speed for a project expected to cost