Starting Monday (March 27), crews will begin work to reconstruct and expand Interstate 39/90 northbound, between the Dane/Rock County line and East Church Road, near the US 51 interchange (Exit 156), including the northbound side of the interchange, east of Stoughton. Periodic nighttime single lane closures are anticipated during the first month of construction, and will occur between 8 p.m. and 5 a.m. Monday through Friday. During these operations, traffic shifts are anticipated within these project limits to accommodate future traffic staging.
In late April, all Interstate traffic will shift onto the southbound side via crossovers, while the adjacent eight mile Interstate section is reconstructed and expanded. Two lanes of traffic will remain open in each direction, with northbound and southbound traffic separated by a median barrier wall. The crossover graphic depicts what motorists will encounter when approaching a crossover. Please stay in your lane and follow the posted speed limits to safely navigate these areas.
During construction, the WIS 73/US 51 interchange (Exit 160) ramps and the southbound ramps at the US 51 interchange (Exit 156) will remain open. The northbound on/off ramps at the US 51 interchange will be closed starting in late April. The northbound off ramp is anticipated to re-open by early August 2017. The northbound on ramp will remain closed until mid-November 2017. Motorists are required to use alternate routes during these ramp closures.
All lane restrictions and work operations are weather dependent and subject to change.
This Interstate expansion is the first section of permanent concrete on I-39/90 northbound from the Illinois state line to Madison. The $30.9 million project is expected to be completed in mid-November 2017.