She pulled on her surveillance helmet with its portable bridge of optical scanners.

The Bailey bridge is a type of portable, pre-fabricated, truss bridge.

A portable bridge was flown in from Milne Bay and erected in a day but it took two weeks to construct the approaches.

The most urgent needs are for portable bridges and air transport.

Therefore the Russians were prepared with portable bridges and rafts to move across the river at unexpected places and then surround the supposed Chinese redoubt.

They kicked away the portable bridges and so had a goodly portion of the assault forces marooned with us in the city.

There were long convoys of trucks, carrying gasoline, portable bridges, and other equipment, headed west, with tanks and other armed vehicles mixed in.

The Aztecs had removed the causeway bridges to keep the Spaniards bottled up, so Cortes had a portable wooden bridge built.

At the second breach they were seen, an alarm was raised, and they had to abandon their portable bridge.

Planks or portable bridges were normally provided for this purpose.