“Door over the Tigoda” Railway Bridge, April 1942
The Tigoda is a left tributary of the Volkhov River; it experiences high water levels in April and May. The small town of Lyuban is situated on the Tigoda; the St. Petersburg–Moscow railway line also crosses the small river there (59.3541813 31.2447388). Gruber, who referred to this structure as the "door over the Tigoda," also crossed this bridge during his march toward the Volkhov.
When crossing railway bridges like the one over the Tigoda—which had been adapted to allow the passage of military transport—specific structural considerations were crucial for heavy vehicles such as trucks or artillery tractors:
Load distribution: The arrangement of longitudinal and transverse timbers visible in the photographs served not only to create a roadway for wagons but also helped distribute the concentrated weight of vehicles more evenly across the bridge’s load-bearing structures. This was critical because railway bridges are designed primarily for vertical rail loads; the distribution of weight from road vehicles—traveling on the bridge where rails would normally be—placed significant stress on the bridge girders.
Limitations: Despite these reinforcements, the ability of very heavy vehicles to cross often remained problematic. Passage was frequently restricted to individual light or medium trucks to avoid compromising the structural integrity of the bridge (which was often already damaged by combat operations). Heavy artillery or tanks often had to avoid these bridges or, whenever possible, were ferried across at other, sturdier river crossings.
Combat Engineer Expertise: To stabilize the bridge for heavy loads, combat engineers often supplemented the basic plank decking by placing additional supports beneath the bridge segments or by reinforcing the roadway with crossed timber layers. As the work shown in marsch-zum-wolchow-eisenbahnbruecke--tuer--ueber-tigoda--april-42.webp illustrates, these measures were essential, since the failure of the bridge would have jeopardized the entire division’s supply lines.
The visually distinct text was created in July 2026 with the help of the AI Gemini. - Page translated with Google.
