An authority may acquire, construct, operate, maintain, expand, or extend a turnpike project in:
(1) a county that is a part of the authority; or
(2) subject to Sections 366.031(e) and 366.0311, a county in which the authority operates or is constructing a turnpike project if the turnpike project in the affected county is a continuation of the authority's turnpike project or system extending from an adjacent county.