Janesville Rest Area (Rest Area 17) Southbound – I-39
I-39 southbound travelers near Janesville in Rock County, Wisconsin, can pull in at Janesville Rest Area (Rest Area 17). Reported truck parking: 44 spaces. The next southbound stop is Rest Area #81 – Southbound, 48 mi ahead by the mile markers.
Next rest stop on I-39 Southbound
Rest Area #81 – Southbound48 mi ahead by the mile markers · Wisconsin · Mile marker 120Previous southbound stop: Rest Area #81 – Southbound · about 100 mi back (estimated)
Location map
Marker shows recorded coordinates, not an entrance or approved driving route. Follow highway signs.
Open directionsReported parking capacity
Reported capacity from the 2019 federal truck parking survey (FHWA Jason's Law). This is not real-time vacancy information.
Facilities and amenities
Facilities have not been individually confirmed in the available structured record.
Unknown (not documented in the sources): Restrooms, Family restroom, Accessible facilities, Drinking water, Picnic tables, Pet area, Vending machines, Public phone.
A reported facility does not guarantee current availability.
About this rest area
Janesville Rest Area (Rest Area 17) is a stop for southbound travelers on I-39 near Janesville in Wisconsin. For closures before a long drive, check 511 or the Wisconsin Department of Transportation.
Location and driving direction
The rest area sits on the southbound side of I-39 near Janesville in Rock County. It is listed near mile marker 168.
Further along I-39, Rest Area #81 – Southbound follows after roughly 48 miles.
Parking and amenities
The 2019 federal truck parking survey (FHWA Jason's Law) lists 44 truck parking spaces.
Space counts describe reported capacity, not live parking availability.
Time limits and overnight parking
Wisconsin allows up to 24 continuous hours or the posted limit, whichever is shorter; camping is prohibited. Signs posted at the rest area take precedence. Source: WisDOT (checked November 2026).
Coordinates
42.768793, -89.006896
Frequently asked questions
Which side of I-39 is this rest area on?
It serves southbound traffic on Interstate 39 near Janesville.
Where is the next rest stop?
Rest Area #81 – Southbound, about 48 miles further along I-39 by the official mile markers.