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Un-bonded P-T in bridges

Un-bonded P-T in bridges

Un-bonded P-T in bridges

I am not aware of any new bridge projects in the USA today that use UN-bonded P-T in bridge decks - please correct me if I am wrong - if this is true, why? Does the AASHTO/DOT code/s prohibit its use?

Historically, has unbonded P-T been used in bridge decks in the USA or other parts of the world, and if so, does anyone have project references?

By UN-bonded P-T, I do NOT mean to include EXTERNAL P-T, rather greased and sheathed strand systems within concrete decks/elements etc.

Thanks in advance.

PS Those of you who frequent "P-T" and "BRIDGE" forums, I apologize for repeating this thread here, but the "STRUCTURAL" forum appears to have a wider cross section of engineers whom may be able to repsond to this thread.

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