| 21. | A prestressed box beam bridge was constructed over the creek in 1975.
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| 22. | Epoxy coated steel stranded wire is similar to galvanized prestressed steel wire.
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| 23. | The prestressed concrete sleeper is in wide use today.
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| 24. | In 1992, a prestressed box beam bridge was built over the creek.
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| 25. | These shells held the World Record for prestressed shells for about ten years.
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| 26. | A prestressed concrete panel was built along the embankment to reduce noise emissions.
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| 27. | The diameter of the prestressed steel mains pipe is.
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| 28. | A prestressed box beam bridge was built in 1968.
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| 29. | In 1961, a prestressed box beam bridge was built across the creek.
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| 30. | A prestressed box beam bridge was also built over the stream in 1985.
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