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Bridge Testing in US

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No, it is not necessary to load test a bridge in the U.S. before it is put 
into service.  Following AASHTO (American Association of State Highway and 
Transportation Officials) design specifications has generally produced 
satisfactory structures.  The AASHTO specs, however, apply to bridges with 
spans <= 500 ft +/- (164m) and specifications for bridges with longer spans 
have to be developed by the engineer.

If a bridge is designed for unusual loading, or incorporates design 
methodology not yet proven, it may be required to be load tested.

Hope this helps.

A. Roger Turk, P.E.(Structural)
Tucson, Arizona

Jelena Bleiziffer wrote:

>>Could someone please help me with the following questions:

Is it necessary in US to test a bridge after it has been built and before it
goes into service?
If the answer is yes, is the specification of bridge testing defined in some
code and which one?

I need this information in order to compare it with the regulations on this
subject in my country
which are undergoing a lot of changes recently.

Thank you very much in advance.

Jelena Bleiziffer
Croatian Institute for Bridge and Structural Engineering<<