The San Boldo Pass

The San Boldo Pass

The San Boldo Pass (in Italian Passo San Boldo, formerly Passo Sant’Ubaldo and Umbaldopass) is a small mountain pass in the Italian Veneto region between the towns Trichiana [329 m (1,079 ft)] and Tovena in the Cison di Valmarino region [272 m (892 ft)] over a distance of 17 km (11 mi).

The pass lies at the southern edge of the Alps and connects the Val Belluna with the Val Mareno over a height of 706 m (2,316 ft).

The mountain pass is called the SP 635 and only one lane is passable, the traffic is regulated by several sets of lights. There is a speed limit of 30 km/h (19 mph) and a height limit of 3.2 m (10.5 ft), after buses were repeatedly stuck in the tunnel. There are five tunnels blasted into the rock with hairpin turns or loops, and six bridges.

History of The San Boldo Pass ,

Italian Veneto , ITALY

The San Boldo Pass , Italian Veneto , ITALY

The San Boldo Pass , Italian Veneto , ITALY

By the end of the 19th century, it was desired to rebuild the steep road over the pass into a motorable road. But this was not accomplished until the World War I from February to June 1918, through the work of the Austro-Hungarian army. The road to supply the Piave front was built in a record time of only three months. It is nicknamed the “Street of the 100 days” because of its short construction period. Workers were also prisoners of war, the elderly, women, and children of the local population. In the final phase of the construction of 1,400 workers were working in three shifts in the construction of this strategically important connection. For transportation of heavy artillery and supplies, the grade, despite the extreme topography, could not be more than 12%. The design is still regarded as a technical achievement.

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