Tay Bridge disaster warned of their unreliability, and declined to estimate conditions at Dundee from readings taken elsewhere. One modern interpretation of available information suggests winds were gusting to . Usage of the bridge was restricted to one train at a time by a signalling block system using a baton as a token. At 7:13 p.m. a train from the south (consisting of a 4-4-0 locomotive, its tender, five passenger carriages, and a luggage van (brake van) slowed to pick up the baton from the signal cabin at the south end of the bridge, then headed out onto the bridge, picking up speed.
Tay Rail Bridge eight months. A good deal would depend on the weather but this was far from favourable. Despite this, on 22 September 1877, the first engine crossed the bridge, and upon its completion in early 1878 the Tay Bridge was the longest in the world. While visiting the city, Ulysses S. Grant commented that it was "a big bridge for a small city". Like all UK rail lines, the Tay Bridge was subject to a Board of Trade inspection before it could carry passenger trains. The inspection was conducted 25–27 February 1878 by Major General Hutchinson of the Railway Inspectorate, who