Department of Transportation; guardrail modernization; report. Requires the Department of Transportation (the Department) to identify, prioritize, and conduct the replacement of guardrail systems and end treatments that do not meet current Manual for Assessing Safety Hardware (MASH) safety standards. The bill requires the Department to (i) identify and use any state or federal funds available to the Department for such purposes and, as necessary, apply for other grant funds; (ii) create and maintain a public inventory of non-compliant guardrail systems and end treatments; (iii) create a five-year upgrade schedule for the replacement of non-compliant guardrail systems and end treatments; and (iv) submit an annual report to the Chairs of the House and Senate Committees on Transportation.