Information about the i74bridge in the Quad Cities

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i74bridge is the dual suspension bridge on the Mississippi river joining Bettendorf in Iowa to Moline in Illinois!


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I74bridge was built in 1935 and has reached end of its service life. The I74bridge is funded by both Iowa and Illinois and is going through a major change. The new construction will be up to the current design and roadways standards. The project considers revamping the road from Avenue of the Cities in Moline to 53rd Street in Davenport with a total distance of about 7 miles. Quad cities have been a major connection between Iowa and Illinois and the employment in the region is expected to increase 35 percent and population might increase by 20 per cent as well. The heavy traffic crossing the river every day make the current bridge extremely vulnerable. The ramps connecting to the bridge are outdated as well and need improvements.

I74bridge carries over 80, 000 vehicles per day and is expected more traffic in the next few years. The new bridge is planned and expected to complete by 2021. A Basket Handle True Arch Twin Bridge is planned in place of the current I74bridge. There will be twin decks which allow for efficient deck replacement options. The arches are planned to extend below the bridge deck, visually ending at the water. There are lot of exciting changes happening around the areas and the roads leading to the bridge in either states. Major improvements such as environment design, capacity, bicycle and pedestrian ramps, transportation system management, public transit, and so on are planned along the project.

I74 Corridor: Proposed Work

Proposed work on either side of the I74 bridge in Illinois and Iowa.

New Developments

Three lanes

The new I74 bridge will have three lanes each on eastbound and westbound routes

Roadway drainage

Roadway drainage will be installed in the new I74 bridge project.

Aesthetic design

The new bridge design includes enhancements in piers, railings, abutments, barriers, and lightings.

Pedestrian and Bicycle Ramps

The new I74 bridge will include bicycle and pedestrian ramps for the public.


I74 bridge is going through a complete makeover. The connecting ramps and roads are also changing and many landscapes are planned along the new bridge. Construction is going on both sides of the river in Iowa and Illinois. Here are some recent pictures of construction provided to public by the Illinois Department of Transportation. The construction is going to be completed in phases and based on the funding available from all the different sponsors. The new bridge is expected to completed by 2021.

Construction 1
Construction 2
Construction 3
Construction 4

I74 Construction: Aerial View

Construction work on the I74bridge.

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