Bridges to Prosperity McNary Bergeron

PROJECT HIGHLIGHTS: I-74 MISSISSIPPI RIVER BRIDGE

The original I-74 suspension bridge was built in 1930 and was twinned with a second span in 1959. The new bridge, which will also be a twin span, will replace the existing bridges. The new structure will include four lanes in each direction as well as a multi-use path for pedestrians.

Our Role

McB is providing construction engineering services to Lunda Construction. This includes arch analysis and erection procedures for the 775 ft. main span tied arches.

Owner

Iowa DOT

Contractor

Lunda Construction

Designer

Modeski and Masters

Total Contract Value

$1.2 Billion

Timeline

2017-2021

Data Sheet (pdf)

Current Project List