Road Tunnels in Luxembourg — Complete List by Length

• 16entries listed
• 2.97 kmlongest bore
• 1983–2013openings span
• 13.63 kmtotal length

The record table

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

How this table is compiled

Where one of these 16 lengths disagrees with an operator's own figure for Luxembourg, the table keeps the published value and notes the difference instead of averaging the two. The 16 rows for Luxembourg are ordered by length, not by date, so the 2013 opening sits well down the table without being any less current.

Lengths for Luxembourg are recorded in metres which is how the operators publish them and why the shortest entry here reads as 100 m and not a rounded figure. The longest entry is 29.7 times the shortest and 5.9 times the median, which is the quickest measure of how uneven the table is.

A new scheme in Luxembourg would have to beat 2.97 km to change the head of this table, and that is the figure worth rechecking when one opens. Eighth on the list is Kannerduerf at 0.53 km, which is where the table stops being about record holders and starts being about ordinary infrastructure.

Dated entries run from 1983 to 2013, and the busiest decade is the 2000s with 7 recorded openings. The table on this page runs to 16 rows and records Tunnel, Length (m), Date of opening, Canton and Notes for each of them, which is the shape the original compiler chose rather than one imposed here.

Dates for Luxembourg 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 13.63 km, which is a number with no engineering meaning but a useful sense of the scale of what is catalogued.

Reading the figures

The dated entries carry 7 distinct opening years across 30 years, and the median opening year is 2001. Read down the length (m) column, the 16 values run from 100 m to 2 966 m with a midpoint at 500 m; the spread rather than the maximum is what says how uneven this set is.

Roughly 9 of the dated entries opened in this century, which is a rough measure of how much of the network is recent. The captions name 4 distinct places and structures — Gosseldange, Burmerange and Alzette-Micheville among them — and those names are the index into the length tables where each is recorded with its own figure.

The earliest dated entry is Renè Konen, opened in 1983, and the most recent is Grouft in 2013. The material on this page is held in 9 captions rather than in running text, 80 words of it, each written against the image or row it belongs to by the compiler who put the page together.

The ten longest average 1.25 km against 0.19 km for everything below them, and that ratio is the clearest thing this table says about the distribution. The tunnel column names 16 distinct entries on this page, Grouft and Gousselerbierg among them, each traceable to the operator or administration record it was taken from.

They are not uniform: the fullest runs to 20 words and the briefest to 6, and on a page of this kind the long ones are where the explanation lives — the caption carries what the picture cannot. Ventilation and escape provision, not bore length, drive most of the cost on modern road tunnels in Luxembourg.