I-90/39 project to bring lane crossover through Janesville

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Gazette staff
Sunday, October 22, 2017

JANESVILLE—For weeks, crews have been staging work on the northbound lanes of Interstate 90/39 through Janesville, the section that's up next to undergo a multi-lane expansion.

Later this week will come the surest sign yet that work is in full swing: a lane crossover.

Starting Thursday, travelers on the northbound lanes of I-90/39 through Janesville will be diverted onto a temporary, two-lane crossover that will divert them to the southbound lanes of the Interstate, the state Department of Transportation announced.

The DOT has already built a widened area on the southbound side that will handle the lane crossover. The diversion will keep four lanes open on the Interstate as crews rebuild the north side under a plan to eventually add two extra lanes in both directions, beefing up the Interstate to eight lanes through Janesville.

The northbound lanes through Janesville are due for an expansion first, and the diversion will allow crews to peel off the pavement on the northbound side and bridge areas through Janesville.

The entire expansion through Janesville, both the northbound and southbound sides, will roll out over the next two years, according to DOT plans—part of a 45-mile expansion of I-90/39 between Beloit and Madison that's expected to be complete by 2021.

The lane crossover will be in operation through the winter months of 2018, the DOT said.

Motorists will hit the Janesville crossover at the Racine Street interchange, also labeled as Exit 175. They'll switch to two temporary lanes on the southbound side of the interstate, and remain on the southbound side until the Humes Road interchange, also known as Exit 171B, where northbound traffic will cross back over to the northbound side.

The crossover is set up similar to a crossover on another section of the Interstate that's been under expansion this year north of Edgerton.

The DOT plans to use a concrete barriers to divide traffic sharing the southbound side in the six-mile-long crossover area. The DOT said two lanes will remain open in each direction during the daytime, although night closures during the project will trim parts of the stretch to one lane.

During lane expansion, the Racine Street and Humes Road ramps will remain open, the DOT said.

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