Regulations for the Use of Temporary Rail Bridges and Supports

The directive establishes rules for the use, maintenance, and rental of temporary rail kits, beam structures, and metallic bridges used to maintain track continuity during construction. Establishment heads must submit written requests to the Central Service (Division Vo) detailing the project nature, speed restrictions, location, and timeline. Once authorized, equipment is dispatched by the Fixed Installations Workshops (AIF).

Equipment rental fees and operational costs (assembly, disassembly, transport) are strictly defined. For work performed on behalf of third parties, the railway authority requires a full estimation of costs, including materials, site preparation, speed restriction impacts, signaling surveillance, and a 17% administrative surcharge, to be paid in advance.

Temporary structures are categorized by bridge span: rail kits (up to 3m), beam assemblies (up to 4.5m), and metallic girder bridges (up to 20m). Each type has specific speed limits, typically 20-30 km/h. Detailed technical specifications exist for support structures (camarteaux), which must be built on stable ballast layers. Cross-track support for bridge structures requires specific anchoring methods to prevent lateral movement.

All equipment is managed by the AIF in Casablanca. It is strictly forbidden to modify components without authorization. Upon completion of works, all materials must be returned to the AIF for inspection, maintenance, and potential repairs. During the service life of these structures, local officials are responsible for regular safety inspections of the supports, beam stability, and track alignment.