Road Tunnels in Norway — Complete List by Length, Part 2000

• 81entries listed
• 2.98 kmlongest bore
• 1962–2020openings span
• 199.14 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 8.85 km of the 199.14 km on this page, which is 4 per cent of the total from 3 of 81 rows. The shorter half of the table totals 88.35 km against 110.79 km for the longer half, from the same number of rows.

Where one of these 81 lengths disagrees with an operator's own figure for Norway, the table keeps the published value and notes the difference instead of averaging the two. The 81 rows for Norway are ordered by length, not by date, so the 2020 opening sits well down the table without being any less current.

Dated entries run from 1962 to 2020, and the busiest decade is the 1990s with 19 recorded openings. The table on this page runs to 81 rows and records Tunnel, Length, Date of opening, Fylke County and Notes for each of them, which is the shape the original compiler chose rather than one imposed here.

Second and third place go to Amla at 2.97 km and Magnhildskar at 2.9 km. Read down the length column, the 77 values run from 2 012 m to 2 980 m with a midpoint at 2 467 m; the spread rather than the maximum is what says how uneven this set is.

A new scheme in Norway would have to beat 2.98 km to change the head of this table, and that is the figure worth rechecking when one opens. The longest entry is 1.5 times the shortest and 1.2 times the median, which is the quickest measure of how uneven the table is.

Reading the figures

Roughly 35 of the dated entries opened in this century, which is a rough measure of how much of the network is recent. The captions name 10 distinct places and structures — Sentrumstangen, Tromsø and Kvaløya among them — and those names are the index into the length tables where each is recorded with its own figure.

Dates for Norway refer to opening to traffic, not breakthrough, so the 1962 entry was under construction for some years before that. Laid end to end the entries on this page would run 199.14 km, which is a number with no engineering meaning but a useful sense of the scale of what is catalogued.

The dated entries carry 43 distinct opening years across 58 years, and the median opening year is 1995. The material on this page is held in 17 captions rather than in running text, 147 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 2.89 km against 2.4 km for everything below them, and that ratio is the clearest thing this table says about the distribution. The tunnel column names 79 distinct entries on this page, Skarvberget and Amla among them, each traceable to the operator or administration record it was taken from.

81 of the 81 rows carry an entry in the notes column — 100 per cent of the table — and that column is where the qualifications live: tube counts, closures, boundaries and the reason a figure reads the way it does. A ranking answers the question people arrive with and rarely the one they leave with.