To ensure uninterrupted railway communication with the Republic of Crimea, within the framework of the largest national infrastructure project, the construction of a transport crossing through the Kerch Strait was completed in 2018, which also includes a railway component. The article considers the regulatory legal grounds for the use of modern stationary inspection and screening complexes that allow for the inspection of freight trains plying on the railway of the transport passage through the Kerch Strait.The uniqueness of the legal regime for the protection of this structure is complemented by the use of the latest technical means of ensuring transport security to prevent the commission of unlawful encroachments in the activities of the transport complex, including stationary inspection railway complexes.The principle of operation of inspection complexes, which is based on the physical method of introscopy, is shown, and their technical characteristics are given. The use of inspection railway complexes allows the transport security forces to identify objects and substances that are prohibited or restricted for movement into the transport security zone, practically without interfering with the technological processes of freight traffic, since the scanning of wagons is carried out while the passage is moving. Modern installations at a high level reliably protect the Crimean bridge from illegal encroachments.