ID-3: St. Maries Railroad and River Bridges

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ID-3: St. Maries Railroad Bridge and St. Joe River Bridge

For the remainder of the work, two-way traffic will be allowed on the railroad bridge. The south end of Meadowhurst Drive will continue to be closed, and Riverside Avenue under the bridge will be intermittently closed as needed for construction. Once the weather improves, work on the river bridge will resume, and two-way traffic will be accommodated.

Winter shutdown
Work will resume again in spring.
Project completion
Planned for summer 2019.
For traffic updates, email
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Project Overview

As a design/build project, Record Steel Construction Inc. and J-U-B Engineers are replacing two bridges in St. Maries for $17.3 million. The new bridges include one lane in each direction with a wider shoulder and sidewalk on each side. Nearby intersections will be realigned with signage replaced.

Traffic impacts will vary throughout the project. Crews will work during daylight hours Monday through Friday and weekends as needed.

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Summer/fall 2017
Analysis and design
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Fall/winter 2017
Construction preparation
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Winter 2017/spring 2018
River bridge foundation construction
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Spring/summer 2018
West half of river bridge is replaced
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Fall 2018/winter 2019
Railroad bridge construction; east half of river bridge reconstruction
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Early summer 2019
Anticipated end of construction
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July 4

Open for the holiday

Both the railroad bridge and the river bridge will be open for the holiday weekend, starting end of day Wednesday, July 3. After the holiday weekend, traffic and lane impacts will be minimal through the duration of construction.

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May 2019

Concrete pours

Drivers can expect short, single-lane closures and flaggers on the river bridge in the coming weeks as contractors try to finish three concrete pours. As always, work is weather-dependent.

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Work on St. Joe river bridge resumes

March 2019

In early April, crews will start work on the driving surface of the bridge over the St. Joe River on Idaho Highway 3 in St. Maries.
Two lanes of traffic will run on the newest portion of the bridge, with this and other weather-dependent work, such as the placing of more sidewalks and the paving of Meadowhurst Drive, scheduled for completion this summer. Other remaining work includes placing an overlay and installing fencing on the railroad bridge, which opened to traffic in January 2019.In the meantime, a small crew is still on the construction site performing work that is not weather-dependent.

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Winter 2018/2019

Winter break

Crews have suspended weather-dependent work but will resume in the spring as soon as possible.

Most other traffic and parking situations have returned to how they were before construction.

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Both bridges will be reduced to one lane likely for several days the week of July 15.


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