I-43 North-South Construction Update

About the Project:

The I-43 North-South Reconstruction project spans 14 miles from Silver Spring Drive north to WIS 60, in Milwaukee and Ozaukee counties. WisDOT is reconstructing I-43 to modern design standards and adding a lane in each direction. Additionally, five interchanges along the corridor will be reconstructed:

Good Hope Road
Brown Deer Road (constructing a new Diverging Diamond Interchange)
County Line Road (constructing a new full-access interchange
Mequon Road
Pioneer Road (County C)

This project also includes:

Construction of a brand-new interchange at Highland Road
Replacement of the Union Pacific Railroad bridge over I-43 in Glendale
Expansion of Port Washington Road in Glendale between Bender and Daphne roads

Progress Overview:

County Line Road Segment:

Donges Bay Road, between County W (Port Washington Road) and just east of La Cresta Drive is scheduled to reopen in late September.
Katherine Drive, north of Port Washington Road, is scheduled to close for approximately two months, shortly following the reopening of Donges Bay Road.
Port Washington Road, between Port Washington Lane and County Line Road is scheduled to reopen early 2023.
County Line Road entrance ramp to I-43 South is to remain closed through mid-2023.
I-43 North exit ramp to Port Washington Road is to remain closed through mid-2023.

North End Segment:

Highland Road, between County W (Port Washington Road) and Lake Shore Drive is scheduled to reopen early October.
Highland Road Interchange ramps are scheduled to open to traffic late November.

What to expect to begin in early 2023:

County Line Road Segment:

Close and rebuild County Line Road between Pheasant Lane and Port Washington Road through mid-2023.
Southbound and northbound mainline freeway reconstruction just north and south of County Line Road.
Close Port Washington Lane near County Line Road intersection through mid-2023.
Reopen County Line Road entrance ramp to I-43 South in mid-2023.
Reopen I-43 North exit ramp to Port Washington Road in mid-2023.
Open Katherine Drive entrance ramp to I-43 North in mid-2023.
Open I-43 South exit ramp to Port Washington Road in mid-2023.

Mequon Road Segment:

Begin reconstruction of Mequon Road interchange
- Long-term lane closures on Mequon Road between Port Washington Road and Union Pacific Railroad.
- Shoulder closures on I-43 South for temporary widening.

North End Segment:

Southbound and northbound mainline freeway reconstruction.
Close and rebuild the County C (Pioneer Road) bridge and ramps.
Short-term closures of Highland Road ramps (not concurrent with County C Ramps).

*All work is weather dependent and subject to change. Always check 511wi.gov prior to departure.

Stay Connected: Find us online at https://projects.511wi.gov/43north-south/

Pictures Attached: