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ISO/NP 21725-3

Simplified design of prestressed concrete bridges — Part 3: Part 3: Box-girder bridges for precast segmental span-by-span method

General information

Current stage: 10.20 Effective date: Mar 4, 2026

Originator: ISO

Owner: ISO/TC 71/SC 5

Type: International Standard

Scope

This document covers the fundamental principles for the simplified design and analysis of segmental precast box girder bridges, the associated loads and load combinations, the design specifications, the section detailing requirements, the types of segmental bridges, and the construction equipment.

Life cycle

NOW

IN_DEVELOPMENT
ISO/NP 21725-3
10.20 New project ballot initiated
Mar 4, 2026