In the second half of the 19th century a complex was built near Civezzano, divided into three works, placed to control the two roads that led from Valsugana to Trento, protecting the entrance of the gorge of the river Fersina.
The “Obere Strassensperre” (upper road cut) is a work of modest dimensions, with an irregular plan and developed on a single floor. Built in squared limestone, it was equipped with positions for riflemen and machine-gunners, 13 embrasures for riflemen on the front of the gorge and 2 cannons of 12 cm managed by a garrison composed of 1 officer and 45 men.
The upper cut represents the only intact example of a type of fortification of “transition” between the works “casemate” with open front of the early sixties of the 800 and the later fortresses armored style “Vogl”.
Disarmed at the outbreak of the conflict with Italy, it was spared from demolition perhaps because it was still considered functional to the accommodation of infantry troops. Passed to the Italian military treasury in 1918, in 1956 it was given to the municipality of Civezzano.