Northwest Arterial State of Good Repair Project

The Northwest Arterial State of Good Repair Project includes improvements from U.S. 20 to John F. Kennedy Rd. including the reconstruction of both the Pennsylvania Ave. and Asbury Rd. intersections, repaving the southbound lanes, and total reconstruction of the northbound lanes.

Click the map to enlarge.

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Multi-Phased Construction Schedule

Due to the magnitude and scope of work, the construction schedule includes multiple phases to reduce traffic delays and minimize impacts on schools and businesses through the corridor.

 Phase 1: June - November 2022

Northwest Arterial Southbound Lanes - Pennsylvania Ave. to US 20
Estimated Schedule: August - November 2022 
Milling of the southbound lanes from just north of Pennsylvania Ave. to US 20 begins Monday, Sept. 19. 

Traffic Impact 
Alternating lane closures with milling planned at night between 9 p.m. and 7 a.m. on Monday, Sept. 19 and Tuesday, Sept. 20. There will be lane shifts to accommodate construction. Flaggers will be on site to control and assist traffic.

Following milling, repaving is scheduled to begin Monday, Sept. 26 and is expected to be finished by Wednesday, Oct. 5. The contractor will pave from 10 p.m. - 6 a.m.   

Traffic Impact 
Alternating lane closures with paving planned at night between 10 p.m. and 6 a.m. PLEASE NOTE: The Pennsylvania Ave. and Chavenelle Rd. intersections will temporarily close for paving. During this time, flaggers will be on site to control and assist traffic. 

Northwest Arterial Northbound Lanes - US 20 to Catfish Creek Bridge
Milling of the northbound lanes from US 20 to Catfish Creek bridge begins Monday, Sept. 19.  

Traffic Impact 
Alternating lane closures with milling planned at night between 9 p.m. and 7 a.m. on Monday, Sept. 19 and Tuesday, Sept. 20. There will be lane shifts to accommodate construction. Flaggers will be on site to control and assist traffic.

In addition to milling and resurfacing the lanes, four-foot-wide paved shoulders will be added to widen the road. Paved shoulder work is expected to begin on Thursday, Sept. 22. 

The estimated completion date of this construction phase is November 15, 2022.

 Phase 2: April - August 2023


Northwest Arterial Northbound Lanes
The work on the northbound lanes will include total reconstruction including the removal of the existing concrete pavement, excavation for new stone base, installation of pavement subdrains, new 12-inch stone base, and new 13.5-inch asphalt pavement. This work will be completed during the 2023 construction season.

Traffic Impact
Complete closure of the northbound lanes. Two-way head-to-head traffic in the southbound lanes with median crossings at Pennsylvania Ave. and Asbury Rd. allowing for normal traffic flow through the intersections.

Project Detours and Construction Alerts

To stay updated on construction-related street closures and detours, sign up for email and/or text alerts through the Northwest Arterial State of Good Repair Project Detours & Construction Alerts NotifyMe

Project Funding

The total project cost is approximately $9.2 million, the majority of which will be paid for through state funds and grants including $4.8 million in Dubuque Metropolitan Area Transportation Study Surface Transportation Program SWAP funds, $4.2 million from the Iowa Department of Transportation (Iowa DOT), and a $105,000 Iowa DOT Traffic Safety Improvement Program grant. In addition, $75,000 in city funds will be used to extend the left-turn lane at John F. Kennedy Rd. 

For questions or more information, contact the Engineering Department at 563.589.4270.