Sec. 3. (a) A bridge, including the tangible property appurtenant to it, is exempt from property taxation if:
(1) the bridge is constructed:
(A) entirely within this state and across a navigable stream; or
(B) across a stream forming a boundary of this state;
(2) the bridge is owned by a state or a political subdivision of a state; and
(3) the bridge:
(A) is (except as provided in subsection (b) of this section) operated free of tolls; or
(B) was authorized or consented to by an act of Congress.
(b) The exemption provided in this section may not be denied because tolls are charged if the tolls are levied:
(1) to establish a sinking fund for the cost, including interest and other financing charges, of the bridge and its approaches; or
(2) to provide for the proper maintenance, repair, and operation of the bridge and its approaches.