Interstates 39 North & 90 West - Rock County

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Interstates 39 north & 90 west
Travelers are greeted with a decorative overpass carrying State Line Road upon entering the Badger state. Photo taken 05/09/10.
A rest area and tourist information center lie just north of the state line. There are four rest area facilities along the entire stretch of Interstate 90 in Wisconsin. Photo taken 05/09/10.
I-39 north & 90 west share 78.4 miles of pavement from the Illinois state line to Beloit, Janesville and the capital city of Madison before separating south of Portage. Photo taken 05/09/10.
Exits 185A/B join I-39 & 90 with Interstate 43 and Wisconsin 81 in two miles. A full cloverleaf interchange presently joins the two freeways. Photo taken 05/09/10.
The northbound freeway enters the city limits of Beloit at the Wisconsin welcome center. Photo taken 05/09/10.
Interstates 90 & 39 curve northeast along side Spring Brook and an industrial park to encounter Interstate 43 north and Wis 81 west in one mile. I-43 angles northeast to Elkhorn and Milwaukee. The 123.8 mile long Wis 81 begins west at the forthcoming interchange. The state trunk highway passes through Monroe, Plattesville and Lancaster before ending at Wis 133 and Cassville along the Mississippi River. Photo taken 05/09/10.
Interstate 43 travels a rural route by the village of Clinton and city of Delavan over the initial 25 miles to Elkhorn. Photo taken 05/09/10.
Exit 185B departs I-39 north & 90 west for Interstate 43 north. Until late 1987, Wis 15 was the designation for the freeway between Beloit and Milwaukee. Prior to that time I-43 existed between Green Bay and Milwaukee over the original routing of U.S. 141.
During extreme winter conditions, Interstate 43 can also be used as an alternative to Interstates 39 & 90 and vice versa. Reassurance shields for the detour are sporadically placed along both freeways to aid motorists. Photo taken 05/09/10.
Wis 81 stems west from Exit 185A along Milwaukee Road and White Avenue to the Beloit city center. Beloit was founded in 1836 and incorporated as a city in 1856. The city is home to a few large industrial plants for name-brand companies, including Hormel and Frito Lay.
Prior to its current route, Wis 81 existed as a north-south route from the village of Argyle (where current Wis 81 passes through) in LaFayette County to the west of Mt. Horeb, located in Dane County. Photo taken 05/09/10.
Construction from summer 2020 to fall 2022 rebuilds Interstates 39 & 90 north from the state line to the West Hart Road overpass. Photo taken 05/30/11.
The freeway advances toward Madison, lying 53 miles to the north. Janesville, the county seat of Rock County, is situated 16 miles ahead along the east banks of the Rock River. Photo taken 05/09/10.
Approaching Rock County S (Shopiere Road) and Exit 183 on I-39 & 90 north. CTH-S branches northeast from CTH-G (Prairie Avenue) in Beloit to the community of Shopiere. Photo taken 05/09/10.
The diamond interchange (Exit 183) with County S (Shopiere Road) was reconstructed from April to November 2015 as part of the I-39/90 Expansion Project. Work improved the ramp geometry at the rural exit. Photo taken 05/09/10.
CTH-S east travels a rural route 2.1 miles east to end at Shopiere and Rock County J. Photo taken 05/09/10.
Motorists along I-39 north & 90 west cross over Turtle Creek and pass below Creek Road ahead this shield assembly. Photo taken 05/30/11.
I-39 & 90 progresses 4.5 miles north to Wis 11 at the first of four Janesville interchanges. Madison is 50 miles to the north. Photo taken 05/30/11.
A north side weigh station operates along I-39 & 90 between Town Line and Woodman Roads. Photo taken 05/30/11.
Interstates 39 north & 90 west elevate over a Union Pacific Railroad line on the one mile approach to Exit 177 with Wis 11 west and Avalon Road east. Wis 11 forms a southwestern bypass of Janesville to County B (Court Street). The six mile long expressway opened on November 11, 2002.1 Photo taken 05/30/11.
Exit 177 departs I-39 north & 90 west for STH-11 west to south Janesville, the University of Wisconsin - Rock County, Brodhead and Monroe. Avalon Road extends east from the trunk highway six miles to the settlement of Avalon.
Construction from September 21, 2015 to fall 2016 redesigns Exit 177 into a diverging diamond interchange (DDI). Photo taken 05/30/11.
Interstates 39 north-90 west & Wisconsin 11 east
STH-11 east combines with I-39 & 90 for 2.6 miles to rejoin its original alignment east to Delavan. Photo taken 05/30/11.
Agricultural lands spread along side the freeway one mile ahead of Exit 175 with Racine Street west and Wis 11 east. Wis 11 east links I-39 & 90 with U.S. 14, 1.5 miles to the east. The two routes combine from there 4.1 miles to Emerald Grove and 11.1 miles overall to Walworth County. Photo taken 05/30/11.
I-39 & 90 cross over a WSOR Railroad and County O just ahead of the ramp departure (Exit 185) for Wis 11 east and Racine Street west. Photo taken 05/30/11.
Construction in 2013 redesigned the former full cloverleaf interchange with Racine Street into a dumbbell interchange. This consolidated ramp movements to both Wis 11 east and Racine Street west from both directions of I-39 & 90. Photo taken 05/30/11.
Looking at the former loop ramp (Exit 175A) for Racine Street west. Racine Street doubles as the locally maintained U.S. 14 Business. The auxiliary route of U.S. 14 is sparsely signed within Janesville and not at all outside the city limits. Photo taken 05/30/11.
Interstates 39 north & 90 west
Interstates 39 & 90 lead due north through residential areas of east Janesville over the next two miles. Photo taken 05/30/11.
A six-ramp parclo interchange formerly joined I-39 & 90 with U.S. 14 (Humes Road) in one mile at Exits 171C/B. Bridge widening for the freeway above the arterial route in 2016 coincided with the 2015 removal of the loop ramps in both directions. Long term work scheduled for spring 2019 to fall 2021 rebuilds the exchange into a diamond interchange. Photo taken 05/30/11.
Exit 171C was renumbered to Exit 171B and now carries all traffic in unison to U.S. 14 (Humes Road). U.S. 14 east curves southward around the east side of Janesville to Wis 11. The route west intersects Wis 26 (Milton Avenue) nearby amid several shopping centers and big box retail. Photo taken 05/30/11.
Button copy signs were posted at the loop ramp (Exit 171B) for U.S. 14 west to Wis 26 south to Downtown Janesville. Exit 171A connects Interstates 39 & 90 with Wis 26 (Milton Avenue) directly in one half mile. Photo taken 05/30/11.
Exit 171A formerly consisted of a six-ramp parclo interchange. The loop ramps were removed in 2016 and construction from spring 2019 to fall 2021 redesigns the exit into a DDI. Photo taken 05/30/11.
Wis 26 joins Janesville with Milton, Fort Atkinson and Jefferson along a freeway starting just outside of the city. The trunk highway goes for 98 miles overall from U.S. 51 in Janesville to I-41 outside Oshkosh. Photo taken 05/30/11.
A mostly rural 7.7 mile exit less stretch ensues on the drive northward out of Janesville. A westbound rest area was once located on I-90 just south of the Townline Road underpass. Photo taken 05/30/11.
Wis 59 represents the final Rock County interchange in five miles. La Crosse, the westbound destination of I-90 in the state, debuts at 168 miles out on mileage signage. Photo taken 05/30/11.
Interstates 39 & 90 shift northwest from near Milton toward Newville to next meet Wis 59 at Exit 163. STH-59 meanders 116 miles across southern Wisconsin from Monroe east to Milwaukee. Photo taken 05/30/11.
Northbound travelers span the Rock River just west of Newville and Lake Koshkonong. The 299-mile river flows southwest from Horicon Marsh in Dodge County to the Mississippi River at the Quad Cities.
Road work expands and rebuilds the Rock River bridges from spring 2016 to summer 2018. Photo taken 05/30/11.
Construction from spring 2016 to fall 2016 also rebuilds the folded diamond (Exit 163) with Wis 59 into a dumbbell interchange. Wis 59 otherwise arcs southeast to the city of Milton and follows Fulton Street west to the Edgerton city center. Photo taken 05/30/11.
Confirming shields posted for I-39 north & 90 west as the freeway bypasses northern reaches of Edgerton. Photo taken 05/30/11.
Madison is now a half hour away while Wis Dells appears for the first time on mileage signs at 75 miles out. Photo taken 05/30/11.
Interstates 39 north & 90 west enter the southeastern corner of Dane County west of Lake Koshkonong. Photo taken 05/30/11.


Photo Credits:

05/09/10, 05/30/11 by AARoads

Connect with:
Interstate 43

Page Updated 04-26-2016.