(a) A conveyance of land after April 7, 1958, that, at the time the conveyance was made, adjoined a highway reservation listed in section 1 of Public Land Order 1613 of the Secretary of the Interior (April 7, 1958), is presumed to have conveyed land up to the center-line of the highway subject to any highway reservation created by Public Land Order 601 and any highway easement created by Public Land Order 1613.
(b) The burden of proof in litigation involving land adjoining a highway reservation created by Public Land Order 601 or a highway easement created by Public Land Order 1613 is on the person who claims that the conveyance did not convey an interest in land up to the center-line of the highway.