A21 autoroute

The A21 autoroute is a toll free highway in north western France it is also known as the Rocade Minière. It is 57.6 kilometres (35.8 mi) long.

The A21 in northern France

Junctions

Completed

Exit/Junction	Destination
1	D 301 Start of autoroute Towns at junction with D 937 Towns served: Barlin
6	(Aix-Noulette) Junction with A 26 to Calais and Reims.
7	(Bully - Liévin) Towns served: Bully-les-Mines and Liévin
8	(Loos) Towns served: Lens
9	(Lens-nord) Towns Served: Lens
10	(RN47) Towns Served: Lille via N 47 and N 41
11	(Lens est) Towns served: Lens
12	(Loison) Towns Served: Carvin
13	(Lens-centre) Towns Served: Lens
	Junction with A 211 spur to Lens (south) and N 17
14	(Noyelles-sous-Lens) Towns served: Noyelles-sous-Lens
15	(Fouquières-les-Lens) Towns Served: Fouquières-lès-Lens
16	(Hénin-Beaumont) Towns served: Hénin-Beaumont
	Junction with A 1 to Paris and Lille
17	Noyelles-Godault Towns Served: Noyelles-Godault
18	(Courcelles-lès-Lens) Towns served: Courcelles-lès-Lens
19	(RN421) Towns served Douai and Cambrai (via N 43)
20	Autoroute becomes the N 455

In construction

Upgrade of N455 between Flers-en-Escrebieux and Pecquencourt which is the northern by-pass Douai.

Proposed

Upgrade of the N455 between Pecquencourt and Douchy-les-Mines and the A2.

gollark: Also, the latest update to something doesn't show on the user-visible revisions page, which is a minor nitpick but I mildly dislike it.

gollark: This isn't really ideal, as I think I'm duplicating data a bit (timestamps), updating a page involves more work, and more importantly the `revisions` thing doesn't have any relevant information beyond what's available from `pages`.

gollark: Basically, when there's a new revision, the apiosystem reads the current content out of `pages`, compresses it, generates and serializes the metadata, then shoves in a row into `revisions`.

gollark: As of now I do this:```sqlCREATE TABLE pages ( title TEXT NOT NULL UNIQUE, content TEXT NOT NULL, updated INTEGER NOT NULL, created INTEGER NOT NULL);CREATE TABLE revisions ( page TEXT NOT NULL REFERENCES pages(title), timestamp INTEGER NOT NULL, meta BLOB NOT NULL, -- contains revision metadata and type -- ChangeContent { size } is the only one here for now full_data BLOB -- contains optionally compressed text);```but it is not ideal.

gollark: Yes. Please hold on while I post the schæma.

External links

A21 Motorway on Saratlas

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