| SW Iowa Street Viaduct Replacement Project |
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| Project Summary: |
This is a 2010-2012 project to replace the I-5 viaduct structures that cross over a ravine that leads to SW Iowa Street. Click here to view a project summary paper. |
| Latest Information |
Join us at an upcoming Open House to learn more about the I-5 Iowa St. Viaduct Replacement Project. Details:
When: Wednesday, Dec. 9, 2009, 4:30 pm - 7 pm
Where: Portland French School Lobby, 6318 SW Corbett St.
What: An informal opportunity to talk with ODOT project staff about construction, noise, landscape, traffic and other issues.
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The City of Portland's Noise Review Board reviewed and approved ODOT's request for a nighttime and weekend noise variance. The variance will allow ODOT to perform some work during irregular hours. (Pile driving, jackhammering and other work with a high noise impact will not be allowed at night during this project.)
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| Project Information |
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The Oregon Department of Transportation is doing design work on a project to replace the I-5 viaduct structures that cross over a ravine that leads to SW Iowa Street (click here for a project summary paper). The decks of the current structures are deteriorated and in need of major repair and in some places replacement. The bridge columns and superstructure do not meet current roadway or seismic standards. The replacement structure will be widened both west towards the hillside and east towards View Point Terrace within ODOT property to accommodate upgraded shoulders and median. The project will require the construction of new retaining walls to hold the hillside and structures.
While the one-half mile project will not add lanes or capacity to the freeway (there will be six travel lanes before and after the viaducts are completed), a seventh truck-climbing lane will be paved but placed behind barrier across the viaducts. There is no current ODOT project to build a truck-climbing lane for southbound I-5 through this area, ODOT is building extra viaduct width to accommodate a lane should the building of a truck-climbing lane become desirable in the future.
In order to accommodate traffic mobility during construction, current plans call for a temporary three-lane detour structure to be built to the west of the existing viaducts. The walking trail that crosses under the viaducts joining Iowa Street to George Himes Park will be closed during most of the construction period due to safety concerns. The trail will be restored following completion of the new viaduct.
The project is scheduled to go to bid in spring 2010 and is scheduled to take up to three years to construct.
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| ODOT Contact Information |
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Community Affairs Coordinator
Mike Mason
(503)731-8246
Michael.W.Mason@odot.state.or.us
Project Leader
Bret Richards
(503) 731-8482
Bret.N.Richards@odot.state.or.us
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