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Interstate 39 runs north-south through Illinois and Wisconsin as a long distance bypass for traffic around the Chicago and Milwaukee metropolitan areas. A mostly rural route, I begins on the north side of Normal at I, overtaking U. North from there, the freeway continues to I outside Rochelle and U.
Advancing northward, the pair pass through Janesville while en route to the capital city of Madison. There Interstate 94 ties in from Waukesha and Milwaukee to the east to form the longest three-way overlap on the Interstate system. Interstates 39, 90 and 94 share 29 miles of freeway along a northward heading from Madison to the outskirts of Portage.
The s-era freeway includes 11 interchanges with elements of substandard design. Construction runs from to Further south at Beloit, a major upgrade projected to start in summer will revamp the southern terminus of Interstate 43 at Wis Interstate 39 overlays or parallels U. The section between Illinois 5 and Interstate 80 was opened in The mainline was well posted with reassurance markers, but intersecting roads generally omitted the I designation through to at least These trailblazers are posted near East Towne Mall, which is located southwest of the U.
Construction on Interstate 39 was initiated in the late s and early s. The following chronology shows the construction time line of I, including information provided by Steve Sarver and Robb Haukohl: An extension of Interstate 39 north from Wausau to Merrill along the U.
To the best of my knowledge, the Department has no plans at this time to formally request that I be extended; however, if the request is made in the future this segment of roadway should meet the design standard requirements after the reconstruction is completed. The road was rebuilt into a six-lane freeway between the east and west interchanges with STH, with auxiliary lanes added as well.
Work also included a revamp of the east and west U. The east interchange was completed in and three of the four ramps at the west interchange were open to traffic in Overall construction was completed in The project started in and was completed on November 13, Page Updated June 14, Mileage State Illinois Mileage I was extended south from I to Oglesby in early The freeway was first envisioned in as a high speed route between Salem and South Beloit.
The mainline defaults onto I south, which combines with I eastbound nearby. Louis and Decatur. Replaced button copy signs at the south end of Interstate A collector distributor separates from the I southbound mainline for both U. Former button copy overheads posted ahead of the Linden Street underpass and the folded diamond interchange Exit with U.
Back to back trumpet interchanges connect Interstate 55 with I west to Peoria and I north to Rockford. Sign bridge replacements made by along Interstate 55 around Normal included this assembly two miles south of I north. I curves northeast one mile to the south end of Interstate This sign bridge was also replaced by These button copy signs were removed by A signing oddity, this overhead assembly references the I starting point Advancing north toward the end of U. A rare state named shield for Interstate 39 was previously posted north of the East North Road underpass.
This was the last Interstate 39 and U. It was posted just north of the overpass at Maple Ridge Road near Milepost A diagrammatic overhead outlines the movements at the three-wye interchange Exit with Wisconsin 29 east.
Wis 29 west joins U. An end shield for Interstate 39 appears just ahead of the off-ramp Exit to Wis 29 east to nearby Schofield and Weston. Wis 29 ventures east as an expressway to Shawano and Green Bay and Interstate Wis 29 west merges onto U.
This stretch of freeway was upgraded to Interstate standards. The reassurance sign in the median after Exit indicated only U. This sign was removed by This interchange sequence sign was replaced with a new overhead posted within the freeway median.
A look at Interstate 39 at Wis 29 east Exit before the interchange was reconfigured from a trumpet into a three-wye. Interstate 39 appears for the first time along the Wis 29 freeway west, two miles out at the Alderson Road overpass.
Wis 29 leads away from U. Work between April 29, and May 25, both widened and replaced the bridge deck over the Wisconsin River. Wis 29 west crosses the Wisconsin River prior to interchanging with the northern terminus of Interstate The Wausau area is quite scenic with an abundance of trees and hills, including Rib Mountain, located just west of this interchange.
A slight change was made after with the addition of a Left Exit tab for Two lanes of Wis 29 west turn northward onto the U. This portion is not yet I, though upgrades have brought it up to Interstate standards. The three-wye interchange Exit between Wis 29, I and U. Grading from some of the original ramps remains visible both to the north and west of the exchange. They are no longer posted as road work replaced substandard overpasses in the area.
Wis 29 east combines with the U. The two routes part ways at Exit as Interstate 39 begins. The on-ramp from Rib Mountain Road forms an auxiliary lane southward to the three-wye interchange Exit with the Wis 29 east to Weston.
The Trunk Highway extends east from there with expressway standards to Green Bay with a 65 mile per hour speed limit amid a mixture of at-grade intersections and few interchanges. Interstate 39 finally makes an appearance as two lanes part ways for Wis 29 east. I parallels the Wisconsin River southward as a rural freeway to Stevens Point, where it combines with U.
Southbound Interstate 39 and U. This was the first mention of I along southbound U. The exit in the distance is for U. Looking at the south split of U. The first reassurance marker for Interstate 39 stands by milepost The first Interstate 39 south reassurance shield was previously posted at Milepost beyond the folded diamond interchange with U. State Illinois. Normal, La Salle, Mendota, Rockford.
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