These supplemental manuals are still valid supplements to BIRM. Previous supplemental manuals on moveable bridge inspection, and nondestructive testing are excerpted and referenced. New or expanded coverage is provided on culverts, fracture critical members, cable-stayed bridges, prestressed segmental bridges, and underwater inspection. Improved Bridge Inspection techniques are presented, and state-of-the-art inspection equipment is included. The BIRM is a revision and upgrading of the previous manual. Comprehensive supplements to BITM 70 have been developed to cover inspection of fracture critical bridge members, and culverts are now covered in the BIRM. BITM 90 replaced BITM 70 which had been in use for 20 years and has been the basis for several training programs varying in length from a few days to two weeks. It is intended to replace the BITM 90 which was first published in 1991 to assist in training highway personnel for the new discipline of bridge safety inspection. This document, the Bridge Inspector’s Reference Manual (BIRM), is a comprehensive manual on programs, procedures, and techniques for inspecting and evaluating a variety of in-service highway bridges. Manual for Bridge Inspectors, comprised of two volumes.

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