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U.S. 275/Iowa 92 Interchange

U.S. 275/Iowa 92 Interchange

Project Location

Council Bluffs, IA

Project Description

The I-29/U.S. 275/Iowa 92 (I-29/U.S. 275) Interchange reconstruction occurred between 2014 and 2017. The project included reconstruction of I-29, from 1.3 miles south of U.S. 275 to just north of the U.S. 275 ramps, and U.S. 275 from Metro Mall Drive east to Harry Langdon Boulevard including the I-29/U.S. 275 Interchange in Council Bluffs. The project also included the consolidation of CBEC and BNSF railroad operations into a new common corridor west of Mosquito Creek under I-29 and Iowa 92.

The construction consisted of removal of the existing bridges and portions of the existing roadway embankments and the construction of new roadway embankments, walking trail, bridge structures, and other features. Six bridges were reconstructed including I-29 northbound and southbound over Mosquito Creek, U.S. 275 eastbound and westbound over Mosquito Creek, and U.S. 275 eastbound and westbound over I-29. The reconstruction involved raising the interstate and U.S. 275 to accommodate the new railroad corridor for the railroad relocation project.

Project Schedule

Phase I Construction: 06/2014 — 06/2016
Phase II Construction: 04/2015 — 05/2017


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Project references

Project Name:  WB U.S. 275 Over I-29; WB U.S. 275 Over Mosquito Creek; I-29/U.S. 275 Interchange (stage 1 - grade) - tied 1; I-29/U.S. 275 Interchange (stage 1) - tied 1; NB I-29 Over Mosquito Creek - tied 3; SB I-29 Over Mosquito Creek - tied 3; I-29/US 275 Interchange (stage 2 thru 5) - tied 1; I-29/US 275 Interchange - tied 1; Signals I-29/US 275 Interchange - tied 1; EB US 275 Over I-29; EB US 275 Over Mosquito Creek; Lighting I-29/US 275 Interchange - tied 1; RCB extension Des #1112 (RCB at Lateral 5 under existing I-29 SB); I-29 NB Over Existing I-80 EB (Temporary Bridge Widening); US 275 Interchange Ramp D (Design 414)
Project Numbers: Bridge IM-29-3(99)48--13-78; Bridge NHS-29-3(100)48--11-78; Bridge IM-NHS-29-3(98)48--03-78; Bridge IM-NHS-29-3(111)48--03-78; Bridge IM-29-3(105)48--13-78; Bridge NHS-29-3(106)48--11-78; Bridge IM-NHSX-080-1(416)3--03-78; Bridge IM-NHS-029-3(146)48--03-78; Grade IM-NHS-29-3(97)48--03-78; Grade and Pave IM-NHS-29-3(102)48--03-78; Grade and Pave IM-NHS-29-3(103)48--03-78; Culvert Extension IM-NHS-029-3(122)48--03-78; Signing IM-NHS-29-3(128)48--03-78; Signals IM-NHS-29-3(104)48--03-78; Lighting IM-NHS-29-3(110)48--03-78

Additional Resources

Public Meeting - May 28, 2009
Public Meeting - March 11, 2014

Project Map
Project Map

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