The bridge, built in 1961, utilized steel girders and had become deteriorated over the years and was replaced with pre-stressed concrete beams.
en.wikipedia.org His theories found important applications in modern techniques of construction, such as pre-stressed concrete.
en.wikipedia.org A new concrete, steel and timber bridge lasted until 1972 when it was replaced by a pre-stressed concrete bridge.
en.wikipedia.org Currently, major industries include mineral-based units, machine-based units, machine tools and accessories, pre-stressed concrete pipes, plastic products, textiles, wooden furniture and asbestos cement pipes.
en.wikipedia.org This lost stand seems to have been built to a different design, using an innovative application of pre-stressed concrete to contain liquid oxygen spills.
en.wikipedia.org