Dubuque, Iowa — Motorists traveling in northern Dubuque County should prepare for a full road closure on Then Road beginning Monday, July 27, 2026, due to bridge-related construction work.

According to a Dubuque County Road Notification, Then Road will be closed for approximately 0.13 miles in the area of the bridge, specifically from N Cascade Road to N Cascade Road. The closure is necessary to allow a contractor to perform drilling operations at the bridge, located roughly 500 feet south of the northern N Cascade Road intersection.

The work is scheduled to begin at 8:00 a.m. on Monday, July 27, and will occur during daytime hours only, approximately 8:00 a.m. to 5:00 p.m. The project is expected to last 1 to 3 days, depending on weather conditions. During this time, the road will be completely closed at the bridge location within the work zone.

County officials advise drivers to seek alternate routes during the closure. The short segment affected makes the impact relatively localized, but travelers should plan accordingly to avoid delays.

This closure is part of routine infrastructure maintenance to ensure the safety and integrity of the county’s road and bridge network. Motorists are encouraged to slow down and use caution in the vicinity of the work zone both before and after the full closure period, and to watch for any updated detour information from Dubuque County.

For the latest updates on road conditions, residents can contact Dubuque County Public Works or check the county’s official notifications and website.