(a) Certain material is incorporated by reference into this part with the approval of the Director of the Federal Register under 5 U.S.C. 552(a) and 1 CFR part 51. To enforce any edition other than that specified in this section, the FHWA must publish notice of change in the Federal Register and the material must be available to the public. All approved material is available for inspection at 1200 New Jersey Avenue SE., Washington, DC 20590. For questions regarding the availability of this material at FHWA, call the FHWA Regulations Officer, Office of the Chief Counsel, HCC-10, 202-366-0761. This material is also available for inspection at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202-741-6030 or go to http://www.archives.gov/federal__register/code__of__federal__regulations/ibr__locations.html.

(b) American Association of State Highway and Transportation Officials (AASHTO), Suite 249, 444 N. Capitol Street NW., Washington, DC 20001, 800-231-3475, https://bookstore.transportation.org.

(1) “The Manual of Bridge Evaluation,” Section 6 “Load Rating” and Section 8 “Nondestructive Load Testing,” Second Edition, 2011, copyright 2011, incorporation by reference approved for §§650.505 and 650.513(a).

(2) 2011 Interim Revisions to “The Manual of Bridge Evaluation,” Section 6 “Load Rating,” Second Edition, 2010, copyright 2011, incorporation by reference approved for §§650.505 and 650.513(a).

(3) 2013 Interim Revisions to “The Manual of Bridge Evaluation,” Section 6 “Load Rating,” Second Edition, 2010, copyright 2013, incorporation by reference approved for §§650.505 and 650.513(a).

(4) 2014 Interim Revisions to “The Manual of Bridge Evaluation,” Section 6 “Load Rating,” Second Edition, 2010, copyright 2013, incorporation by reference approved for §§650.505 and 650.513(a).

(5) 2015 Interim Revisions to “The Manual of Bridge Evaluation,” Section 6 “Load Rating,” Second Edition, 2010, copyright 2014, incorporation by reference approved for §§650.505 and 650.513(a).

(c) Office of Bridges and Structures, Federal Highway Administration, U.S. Department of Transportation, 1200 New Jersey Avenue SE., Washington, DC 20590.

(1) FHWA-HIF-15-005, “Tunnel Operations, Maintenance, Inspection and Evaluation (TOMIE) Manual,” 2015 edition, available in electronic format at http://www.fhwa.dot.gov/bridge/inspection/tunnel/. Incorporation by reference approved for §§650.505, 650.511(a), and 650.513(a) and (h).

(2) FHWA-HIF-15-006, “Specifications for National Tunnel Inventory,” 2015 edition, available in electronic format at http://www.fhwa.dot.gov/bridge/inspection/tunnel/. Incorporation by reference approved for §650.515(a) and (b).