AASHTO LRFDBDS-10 ✓ Most Recent

AASHTO has released the tenth edition of the LRFD Bridge Design Specifications, which supersedes the ninth edition, published in 2020.

Developed by the AASHTO Committee on Bridges and Structures, these specifications are intended for use in the design, evaluation, and rehabilitation of bridges. The specifications employ the Load and Resistance Factor Design (LRFD) methodology, using factors developed from current statistical knowledge of loads and structural performance.

The tenth edition includes updates to almost all sections of the specifications, with extensive revisions made to Section 5, Concrete Structures; Section 6, Steel Structures; and Section 3, Loads and Load Factors, which includes information on new risk-targeted design response spectra.

The PDF incorporates the September 2025 Errata, which are also available as a separate download for use with the print version. See the “Amendments, rulings, supplements, and errata” section below for a link to the errata product page.