I-80/I-29 Dual, DIvided Freeway
Council Bluffs, IA
During the Tier 1 evaluation of highway design alternatives, it was determined that a dual, divided freeway should be constructed along the overlapping section of I-80/I-29 between the West System Interchange and the East System Interchange. The dual, divided freeway physically separates through traffic on I-80 from traffic on I-29 destined for Council Bluffs, creating I-80 express lanes and I-80/I-29 local lanes. This will be designed by constructing four separate roadways (two roadways for traffic in each direction). Each roadway will be separated by a concrete median barrier.
The dual, divided freeway will offer greater flexibility to travelers and will improve the overall efficiency of the transportation network. For example, it allows traffic to keep moving in both directions of the highway, even if lanes are closed because of a crash or maintenance. The dual, divided freeway permits through traffic to utilize both the express and local lanes, offering more lanes overall to travelers. Currently, the weaving of through traffic and local traffic using the on and off ramps creates congestion, especially during peak traffic hours. The dual, divided freeway separates through traffic from local traffic, eliminating this source of delay.
PROJECT gallery[Click each thumbnail for larger image]
Project Name: I-80/I-29 Dual, Divided Freeway
Project Number(s): Bridge IM-NHS-80-1(396)2--03-78; Grade & Pave IM-NHS-80-1(374)4--03-78; Grade & Pave IM-NHS-80-1(364)3--03-78; Bridge IM-NHS-80-1(309)2--03-78; Bridge IM-NHS-80-1(388)2--03-78; Grade & Pave IM-NHS-80-1(367)2--03-78; Grade & Pave IM-NHS-80-1(385)0--03-78