Now, the bridge is a heavily used truck route and requires a heavy concrete deck.

The bridge requires a vast amount of energy to split open the boundary between the two worlds.

"A shorter bridge, easier to build, that wouldn't require so many materials."

The bridge, which is just 17 years old, requires a complete renovation at enormous cost.

The low bridges would require them to get down out of the way to allow safe passage under a bridge.

A bridge would require two king post trusses with the driving surface between them.

A bridge would require vertical clearance of 150 feet, and it just won't be built.

The resin retained bridge requires a very specific set of design principles.

As an international crossing, any bridge over the river would require federal approval.

The bridge requires twelve people, six on each side, to manually operate its moving sections.