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I-84 EAST GARVEE CORRIDOR IMPROVEMENT PLAN

SUMMARY

This project is schedule to be completed through a series of projects along the corridor over the next several years. The Corridor limits along Interstate 84 begin 1/2 mile west of the Orchard interchange, to 1/4 mile east of the Issacs Canyon (Memory/Eisenman) interchange. The original highway constructed in 1968 has had mo major improvements since it was constructed. the pavement is now deteriorated and the corridor cannot handle the current volume of traffic that it must now carry. Also this section of freeway is the scene of frequent accidents and traffic delays. Below are a list of projects that intend to correct the substandard conditions of the current roadway

THINKING FORWARD

The purpose of this project is to widen Interstate 84 from 4 to 6 or 8-lanes from Cole Rd to the Eisenman interchange. Including: reconstruction of several bridges along the project area and operational improvements to the freeway. The project also includes redesigned interchanges at Gowen Road, Broadway Ave, Vista Ave and Orchard St.

PROJECT STATS

Basic Information:
Project Name Project Length Project Area Status Est. Const. Date Est. Completion
Broadway to Issacs Canyon Pavement Rehabilitation 6.1 I-84 from West of Broadway Ave to Issacs Canyon. Construction Fall 2007 summer 2008
Cole to Gowen Capacity Improvement 3.5 I-84 from Cole Rd IC to east of Gowen Rd IC. Final Design TBD TBD
Orchard Interchange realignment 1.0 I-84 at Orchard St Final Design compl mid 2008 spring 2009 fall 2010
Vista SPUI Interchange Project 1.0 I-84 at Vista Ave Planning TBD TBD
Broadway Interchange Operational Improvements 1.0 I-84 at Broadway Ave Planning TBD TBD
Gowen Interchange Operational Improvements 1.0 I-84 at Gowen Rd Planning TBD TBD
Cole to Gowen Soundwalls 3.5 Interstate 84 from West of Broadway Ave to Issacs Canyon. Final Design 2008 2011

PROJECT DETAILS

PAVEMENT REHAB. BROADWAY AVE TO EISINMAN IC

Will rehabilitate pavement by cracking the existing PCC surface and applying a flexible AC Overlay. The project is scheduled to be completed by summer 2007. the project will be on hiatus during the winter months when it is too cold to apply pavement.

COLE TO GOWEN CAPACITY IMPROVEMENT

Will add 1 mixed-use lane to the inside right of way in each direction from 1/2 mile east of Cole Rd to Gowen Rd. this will widen I-84 to 3 lanes each way. other improvements include modifications to allow future expansion to a fourth lane in each direction.

ORCHARD INTERCHANGE REALIGNMENT

Will construct new interchange and overpass. the new overpass will be constructed just west of the existing structure. The interchange will be constructed as a spread diamond interchange. Operational improvements also include. redesign of the Victory Rd intersection, additional lanes and new signals. Construction timeframes are estimated since they have not yet been set forth by ITD

VISTA SINGLE POINT URBAN INTERCHANGE PROJECT

Will construct new interchange and widen the existing overpass to allow for a new interchange format known as a SPUI. This interchange the first of it's kind in the treasure valley is expensive to build, but due to traffic volumes created at this junction from traffic heading downtown and to the airport it is needed. Operational improvements also include. redesign of the Airport Way intersection, additional lanes and new signals. Construction timeframes are not yet set.

BROADWAY INTERCHANGE OPERATIONAL IMPROVEMENTS

Will construct new interchange and widen the existing overpass to allow for additional lanes. Operational improvements also include redesign of the ramp intersections to improve signal timing and traffic flow and new signals. Construction timeframes are not yet set.

GOWEN INTERCHANGE OPERATIONAL IMPROVEMENTS

Will construct new loop ramp and realign the diagonal ramp in the SW quadrant interchange. In addition the underpass will be reconstructed to allow additional lanes to pass under the freeway to access SR 21 and Micron, and a dedicated exit lane from the freeway to the new loop offramp. Operational improvements also include. redesign of the Eisenman Rd intersection, realigned ramps with improved geometrics, additional lanes and new signals. Construction timeframes are not yet set.

SOUNDWALLS

Will construct new soundwalls along the north side of the interstate in several sections between Cole Rd and Broadway Ave.

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 are starting to deteriorate rutting is visible in the travel lanes along the interstate throughout the region especially between Nampa and Meridian, where the freeway sees the heaviest use. this project 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. These projects are part of the original Connecting Idaho Project set into motion by Kempthorne, They are now known as the GARVEE Transportation Program.

TENTATIVE DETAILS

Current freeway upgrages include Widening the interstate to 6 lanes between Cole/Overland and Gowen Road. And interchange improvements at Orchard, Vista, Broadway and Gowen. Interchange improvements will include longer acceleration and deceleration lanes, reconfigured interchanges, and bridge replacements.

XROADS VISION FOR INTERSTATE 84

This freeway should be widened to 8 lanes minimum from the Garrity interchange in Nampa to the Gowen interchange, and 6 lanes from Gowen Rd to 1 mile east of the Eisenman interchange. and 6 lanes from Garrity Bl in Nampa to Franklin Rd in Caldwell.

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. Additionally 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.



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Updated 10/14/2007