Dual, Divided Freeway

In Tier 1 it was determined that a “dual, divided freeway” should be constructed along the overlapping section of I-80/I-29. The dual, divided freeway would physically separate through traffic on I-80 from traffic on I-29 and traffic destined for Council Bluffs, Iowa. This is done by constructing four separate roadways (two for traffic in each direction). Each roadway would be separated by a concrete median barrier. The graphic below shows a cross section of how the dual, divided freeway would look. Click here to download a PDF (194 kb) with a larger view.

Traffic traveling through Council Bluffs, Iowa, on I-80 (I-80 Express) would use the interior roadways and would not be slowed down by traffic entering and exiting at 24th Street or South Expressway; however, traffic on I-80 express would not be able to exit at 24th Street or South Expressway.

Traffic traveling on I-29 and traffic destined for Council Bluffs, Iowa, would use the outer roadway and would be able to exit and enter at 24th Street and South Expressway. The graphic below shows how the dual, divided freeway would operate.