A42 autoroute
Route information
Part of E611
Length	52.3 km (32.5 mi)
Major junctions
North end	A40
South end	Lyon
Location
Country	France
Highway system
Roads in France Autoroutes Routes nationales

The A42 autoroute is a short motorway in France. Being completed in 1987, the road connects the city of Lyon to its junction with the A40 roughly 50 km north-east of Lyon.

• 2x2 lanes
• 2x3 lanes between Lyon and Pérouges (26 km)
• 70 km long
• Service areas

• 1983: Section between Neyron and Chazey (30 km) opened
• 1988: Section between Chazey and Pont-d'Ain (19.5 km) opened

This article contains a bulleted list or table of intersections which should be presented in a properly formatted junction table. Please consult this guideline for information on how to create one. Please improve this article if you can. (December 2021)

Exit/Junction	Destination
	Lyon-Avenue Jean Mermoz Autoroute commences in Lyon City Centre
1	(Lyon: porte de Croix-Barret) Towns served Lyon Centre, Périphérique ( N 383)
1b	(Villeurbanne Croix-Luizet-St Jean) Towns served: Villeurbanne Croix-Luizet, St Jean
1a	(Vauix-en-Velin) Towns served: Vauix-en-Velin
	Exchange A42-N346 Junction with N 346 Lyon ring road to Orange south
	Exchange A42-A46 Junction with A 46 part of the Lyon ring road to Paris
4	(Parc de Miribel-Jonage) Towns served: Neyron and Miribel
5	(Beynost) Towns served: Beynost
Péage de Beynost
	Exchange A42-A432 Junction with the A 432 to Marseille
Service Area: Lyon-Dagneux/Lyon-Montluel
6	(Balan-Dagneux) Towns served: Montluel and Balan
7	(Pérouges) Towns served: Pérouges, Meximieux and Saint-Jean-de-Niost
Rest Area: Ambérieu
8	(Ambérieu) Towns served: Ambérieu-en-Bugey
9	(Pont-d'Ain) Towns served: Pont-d'Ain
	Exchange A42-A40 Junction with A 40 to Mâcon (north), Geneva (Switzerland) (east) and end of autoroute.

• A42 autoroute in Saratlas