How long did things like Bailey Bridges take to get permanently replaced after the end of WW2?

by asyouwishbuttercup
ctesibius

There was one on the A66 at Greta Bridge about a dozen miles west of Scotch Corner which carried the east-bound traffic until the late 70's, when the road was dualled, bypassing that section.

For those unfamiliar with the area, the A66 is a major trunk road across the country. There is a lesser trunk road about 50 miles south, and another 40 miles north, but this bridge carried significant amounts of traffic.