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I-84 WEST GARVEE CORRIDOR IMPROVEMENT PLAN

SUMMARY

This overall project will be completed through a series of projects along the corridor. over the last several years many of these projects were completed, some projects are being completed and some still remain. The Corridor limits along Interstate 84 are from Caldwell, to the Eagle Road Interchange. The original highway constructed in 1968 has had no major improvements since it was constructed. the pavement became majorly deteriorated and was extremely rutted in many locations along the corridor. The highway was incapable of handling the volume of traffic that it was forced to carry. Also this section of freeway has been the scene of frequent accidents and traffic delays. Below are a list of projects that will to correct the substandard conditions of the roadway.

THINKING FORWARD

The purpose of this project is to widen Interstate 84 from 4 to 6 or 8-lanes from Nampa to the Meridian interchange. Including: reconstruction of several bridges along the project area and operational improvements to the freeway. The project also includes, construction of a new interchange at Ten Mile Road

PROJECT UPDATES

A third lane was completed, and dedicated on October 30, 2009 between Meridian Road and Garrity Boulevard. Ultimately the interstate 84 corridor was designed to allow for four Lanes in each direction. Work is also complete on overpasses at Black Cat Road and Robinson Boulevard. Work still continues on other projects, such as the 10 mile interchange. Once the 10 mile IC and Garrity IC projects are complete the Fourth lane will be opened.

Recently announced a new single-point urban interchange (SPUI) concept at Meridian Road, this interchange design would be the most optimal type of interchange for this location. Current status of a potential interchange reconstruction is unknown at this time.

Stay tuned for more updates on this major project.

PROJECT STATS

Basic Information:
Project Name Project Area Status Est. Const. Date Est. Completion
Garrity to Meridian Widening and Pavement Rehabilitation I-84 from West of Garrity Blvd to Meridian IC. Third Lane Complete* fall 2007 2009
North Franklin to Garrity Widening and Pavement Rehabilitation I-84 North Franklin Blvd (Nampa) to Garrity Blvd. Added Travel Lanes Construction 2010 Summer 2012
Ten Mile Rd Interchange I-84 at Ten Mile Rd Construction spring 2009 spring/summer 2011
Meridian Rd SPUI Interchange I-84 at Meridian Rd Application for Funding and Environmental TBD Unknown, maybe 2014
Black Cat Bridge Replacement I-84 at Black Cat Complete Fall 2008 fall 2009
Robinson Blvd Bridge Replacement I-84 at Robinson Blvd Complete Fall 2008 fall 2009
Garrity Blvd Interchange I-84 @ Garrity & Idaho Center Blvds Construction 2009 June 2011
N Franklin Blvd Bridge Replacement (Eastern Side) I-84 at N Franklin Blvd, Nampa, new overpass to allow for added travel lanes on I-84. Complete summer 2008 fall 2009
11th Avenue North Bridge Replacement I-84 at 11th Ave N, Nampa, new overpass to allow for added travel lanes on I-84. Complete Spring 2010 Fall 2010

PROJECT DETAILS

WIDENING AND PAVEMENT REHAB. GARRITY TO MERIDIAN

This project added a third lane to each direction of I-84, with an additional 4th lane to be added in a future widening once the Ten Mile IC and Garrity Blvd IC projects are completed. The old asphalt pavement was completely replaced with new portland cement concrete pavement.

WIDENING AND PAVEMENT REHAB. CALDWELL TO GARRITY

Will add a third lane to the inside right of way in each direction. Work on the widening will be completed in stages. Currently added travel Lanes are being constructed between Garrity Boulevard and N. Franklin Boulevard. Eventually at some point the added travel Lanes could be extended to the Karcher Connector, or the new 20/26 interchange southeast of Caldwell.

TEN MILE ROAD INTERCHANGE

Construction of a new single point urban interchange (SPUI) and overpass.

BRIDGE REPLACEMENT; BLACK CAT ROAD AND ROBINSON BLVD OVERPASSES

Construction is complete. This project replaced existing Black Cat Road and Robinson Blvd overpasses over I-84 to allow for added travel lane expansion of the interstate. The bridges also have a higher under clearance.

INTERCHANGE REPLACEMENT; MERIDIAN ROAD SPUI

An upgraded interchange at Meridian Road is long overdue. Conceptual plans include a single-point urban interchange (SPUI). Which would provide the maximum amount of traffic throughput with a minimal interchange footprint. This section of Meridian Road has numerous interchanges that are closely spaced together. In addition state route 69 terminates at this intersection. This is the major north-south highway that connects Kuna to the rest of the Treasure Valley.

Once complete this interchange could have three through lanes on Meridian Road, with two left turning lanes in each direction. It is unknown if this will coincide with Meridian's one way couplet project.

GARRITY/IDAHO CENTER BLVD INTERCHANGE

Will reconstruct interchange and overpass. The interchange configuration will remain a spread diamond interchange but the split lane configuration under the overpass will be eliminated.

BRIDGE REPLACEMENT; NORTH FRANKLIN BLVD OVERPASS (EASTERN SECTION)

This project is complete and replaced the eastern (Northbound) span of the N Franklin Blvd overpass over I-84. The new bridge was tied in to the already existing western (Southbound) span creating one bridge structure. The new bridge will allows for widening of I-84.

PROJECT BACKGROUND

This freeway route is vital to the Idaho's Infrastructure and important for interstate commerce throughout the northwest. Several sections of interstate 84 through the treasure valley were starting to deteriorate, and deep rutting was visible in the travel lanes along the interstate throughout the region especially between Nampa and Meridian, where the freeway sees the heaviest use. This series of projects is vital to increasing the traffic volume that can travel through the Treasure Valley, reducing commute times for those who drive in from the growing communities of Nampa and Caldwell as well as future planned communities to the southeast of Boise. The projects have suffered some setbacks, since they have been scaled back from their original scope due to budget constraints. Oroginally part of the larger Connecting Idaho Project set into motion by Kempthorne, The remaining projects became known as the GARVEE Transportation Program due to their source of funding.

VISION FOR INTERSTATE 84

This freeway should be widened to 8 lanes minimum from the Garrity interchange in Nampa to the Meridian interchange, and 6 lanes from Garrity west to Franklin Rd (US 20/26) in Caldwell. This is mostly planned from N Franklin Blvd (Nampa) to the east to Meridian, but the added travel lanes are needed to the west as well.

All pavement should be replaced with high endurance Portland Cement Concrete (PCC) to maximize life. Harsh winter weather and traction control devices cause a great deal of damage to the roadway surface.

All green panel directional/exit signs should be replaced with new lighted reflective overhead Directional signs.

Interchanges should be reconfigured along the route to maximize traffic flow. Signal priority should be given to traffic exiting the freeway at busy offramps. Specific interchanges needing special attention are: The Garrity Interchange, which should be reconstructed with new overpasses to allow traffic to pass underneath without lane separations. Also the Meridian interchange should be constructed. preferably as a single-Point Urban interchange (SPUI).



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Updated 12/30/2010