Task: Evaluate the valence intensity of the snippet, providing a numerical assessment from 0 (very negative) to 1 (very positive), indicating the emotional orientation expressed.
Snippet: From the day the bridge closed, some 140 engineers, iron workers, painters and laborers toiled 12 hours a day, seven days a week, hammering in 150 tons of new steel, adding 15,000 bolts and riveting 21 one-ton floor beams to the superstructure.
Intensity score: 