Service tax for rail under bridge

As per Section 66 B of Service Tax ,

Services by way of construction , erection , commissioning ,or installation of original works pertaining to -

an Airport , port or railways, including monorail or metro is an exempted serivce. AND

Services provided to the Government, a local authority or a governmental authority by way of
construction, erection, commissioning, installation, completion, fitting out, repair, maintenance,
renovation, or alteration of -
(a) a civil structure or any other original works meant predominantly for use other than
for commerce, industry, or any other business or profession; is an exempted service 

so no service tax will be leviable.