Road Tunnels in Russia — Complete List by Length

• 8entries listed
• 4.3 kmlongest bore
• 1983–2008openings span
• 18.4 kmtotal length

The record table

How this archive measures: lengths, bores, dates and ordering

How this table is compiled

The three longest entries alone account for 10.36 km of the 18.4 km on this page, which is 56 per cent of the total from 3 of 8 rows. After the 1980s the next busiest decade here is the 2000s with 2 openings, so the building effort came in more than one wave.

Where one of these 8 lengths disagrees with an operator's own figure for Russia, the table keeps the published value and notes the difference instead of averaging the two. The 8 rows for Russia are ordered by length, not by date, so the 2008 opening sits well down the table without being any less current.

A new scheme in Russia would have to beat 4.3 km to change the head of this table, and that is the figure worth rechecking when one opens. The longest entry is 4.3 times the shortest and 2.0 times the median, which is the quickest measure of how uneven the table is.

Dates for Russia refer to opening to traffic, not breakthrough, so the 1983 entry was under construction for some years before that. Laid end to end the entries on this page would run 18.4 km, which is a number with no engineering meaning but a useful sense of the scale of what is catalogued.

The table on this page runs to 30 rows and records CP, State and Main Town for each of them, which is the shape the original compiler chose rather than one imposed here. An intermediate shaft turns one long heading into two shorter ones, at the price of a permanent structure on the surface above.

Reading the figures

The state column names 30 distinct entries on this page, Astrkhan Obl. and Belgorod Obl. among them, each traceable to the operator or administration record it was taken from. An immersed tube is floated into place and sunk into a dredged trench, so its length is set on land before it goes in the water.

Second and third place go to Roksky at 3.66 km and Krasnopolyansky at 2.4 km. A tunnel list for Russia reads differently from a neighbouring country's: 2 of these 8 structures pass three kilometres, and the same journey time is bought with one long bore in one country and a dozen short ones in another.

The entries sum to roughly 18.4 km of bore, an average of about 2.3 km each, though that average describes no actual row. 3 of the 8 entries fall within a quarter of the median length, which is how tightly this particular list clusters around its typical structure.

This page records the road tunnels catalogued for Russia in a tunnel almanac maintained at this address since the late 1990s. The longest entry is Gimrinsky, at 4.3 km. Eighth on the list is Kanonersky at 1 km, which is where the table stops being about record holders and starts being about ordinary infrastructure.

Further down the table, Vassilyevsky is recorded at 2 km and Silver Forest at 1.51 km. Dated entries run from 1983 to 2008, and the busiest decade is the 1980s with 2 recorded openings. Openings average one every 8.3 years across the dated entries here, though they arrive in clusters, not at that rate.