Road Tunnels in Slovakia — Complete List by Length

• 27entries listed
• 7.46 kmlongest bore
• 1944–2012openings span
• 35.05 kmtotal length

The record table

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

How this table is compiled

The shortest recorded entry is 0.1 km against 7.46 km at the top, a spread of 73.86x across the same table. The three longest entries alone account for 18.23 km of the 35.05 km on this page, which is 52 per cent of the total from 3 of 19 rows.

Where one of these 19 lengths disagrees with an operator's own figure for Slovakia, the table keeps the published value and notes the difference instead of averaging the two. The 19 rows for Slovakia are ordered by length, not by date, so the 2012 opening sits well down the table without being any less current.

Lengths for Slovakia are recorded in metres which is how the operators publish them and why the shortest entry here reads as 101 m and not a rounded figure. The longest entry is 73.9 times the shortest and 7.5 times the median, which is the quickest measure of how uneven the table is.

A new scheme in Slovakia would have to beat 7.46 km to change the head of this table, and that is the figure worth rechecking when one opens. Eighth on the list is Sitina at 1.44 km, which is where the table stops being about record holders and starts being about ordinary infrastructure.

Dated entries run from 1944 to 2012, and the busiest decade is the 2000s with 8 recorded openings. The table on this page runs to 27 rows and records Tunnel, Length (m), Year of opening, Kraj and Okres for each of them, which is the shape the original compiler chose rather than one imposed here.

Reading the figures

2 of the 19 measured entries exceed five kilometres, and those are the ones that carry a full ventilation and escape regime. Laid end to end the entries on this page would run 35.05 km, which is a number with no engineering meaning but a useful sense of the scale of what is catalogued.

The dated entries carry 11 distinct opening years across 68 years, and the median opening year is 2008. Read down the length (m) column, the 27 values run from 101 m to 7 460 m with a midpoint at 906 m; the spread rather than the maximum is what says how uneven this set is.

The ten longest average 3.11 km against 0.44 km for everything below them, and that ratio is the clearest thing this table says about the distribution. The tunnel column names 27 distinct entries on this page, Visnové and Korbelka among them, each traceable to the operator or administration record it was taken from.

Dates for Slovakia refer to opening to traffic, not breakthrough, so the 1944 entry was under construction for some years before that. The captions name 17 distinct places and structures — Višnové, Podhradie and Kysucke among them — and those names are the index into the length tables where each is recorded with its own figure.

The material on this page is held in 17 captions rather than in running text, 158 words of it, each written against the image or row it belongs to by the compiler who put the page together. Ventilation and escape provision, not bore length, drive most of the cost on modern road tunnels in Slovakia.