Dubuque, Iowa — Dubuque County will fully close O’Brien Road starting Monday, April 6, 2026, at 7:00 AM, for a bridge replacement project. The closure will affect 1.42 miles of roadway from Bernard Road to McCarthy Road and is expected to last 14 to 16 weeks, weather permitting.

Project Details

•  Type: Construction

•  Road: O’Brien Road

•  Work Zone: 1.42 miles

•  Description: Full road closure while the existing bridge is removed and replaced.

The project involves demolishing the old bridge and constructing a new 90-foot by 30-foot concrete continuous span bridge. Work begins with bridge removal on April 6.

Impacts on Travelers

Motorists should prepare for detours, as no through traffic will be allowed between Bernard Road and McCarthy Road. Local residents, farmers, and businesses may face longer travel times and temporary access challenges. Emergency services have been coordinated to minimize disruptions.

Drivers are urged to use alternate routes and check updates via the Dubuque County Engineer’s office, the county website, or Iowa 511.

Timeline and Context

The 14- to 16-week schedule accounts for demolition, new bridge construction, roadway reconstruction, and potential weather delays common in Iowa. This project is part of Dubuque County’s 2026 infrastructure program to maintain safe rural roads and bridges.

County officials recommend checking for updates before travel, as schedules may shift due to site conditions or material deliveries.

For more information, contact the Dubuque County Engineer’s Office or visit the county’s road notification page.

This is an official road construction notification. Dates and durations are subject to change.

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