Road Tunnels in Austria — Complete List by Length, Part 250

• 109entries listed
• 0.49 kmlongest bore
• 1935–2010openings span
• 37.67 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 1.47 km of the 37.67 km on this page, which is 4 per cent of the total from 3 of 101 rows. The shorter half of the table totals 15.66 km against 22.02 km for the longer half, from the same number of rows.

Where one of these 101 lengths disagrees with an operator's own figure for Austria, the table keeps the published value and notes the difference instead of averaging the two. The 101 rows for Austria are ordered by length, not by date, so the 2010 opening sits well down the table without being any less current.

Lengths for Austria are recorded in metres which is how the operators publish them and why the shortest entry here reads as 250 m and not a rounded figure. The longest entry is 2.0 times the shortest and 1.3 times the median, which is the quickest measure of how uneven the table is.

The longest stands 0 km clear of the next longest, which is the margin to watch when a new scheme is announced. Laid end to end the entries on this page would run 37.67 km, which is a number with no engineering meaning but a useful sense of the scale of what is catalogued.

Second and third place go to Flachau Einhausung at 0.49 km and Stockrinne-Unterrinne at 0.49 km. The table on this page runs to 109 rows and records Tunnel, Length (m), Date of opening, Land and Bezirk for each of them, which is the shape the original compiler chose rather than one imposed here.

Reading the figures

A new scheme in Austria would have to beat 0.49 km to change the head of this table, and that is the figure worth rechecking when one opens. The dated entries fall across 39 different years, which is a rough measure of whether this was a sustained programme or a handful of separate schemes.

Dated entries run from 1935 to 2010, and the busiest decade is the 1990s with 28 recorded openings. The material on this page is held in 9 captions rather than in running text, 76 words of it, each written against the image or row it belongs to by the compiler who put the page together.

Roughly 18 of the dated entries opened in this century, which is a rough measure of how much of the network is recent. The captions name 5 distinct places and structures — Schlegeis, Alpenstrasse and Joseph among them — and those names are the index into the length tables where each is recorded with its own figure.

Eighth on the list is Annatunnel/Spiss at 0.48 km, which is where the table stops being about record holders and starts being about ordinary infrastructure. The ten longest average 0.48 km against 0.36 km for everything below them, and that ratio is the clearest thing this table says about the distribution.

The dated entries carry 39 distinct opening years across 75 years, and the median opening year is 1990. Read down the length (m) column, the 109 values run from 250 m to 494 m with a midpoint at 367 m; the spread rather than the maximum is what says how uneven this set is.