11/10/2011
Reed Hollinshead
ITD Communication
208-334-8881
reed.hollinshead@itd.idaho.gov
Southwest Idaho highway construction report for Nov. 11-18
BOISE - The following projects are part of the GARVEE Transportation Program in southwest Idaho, which uses funds from Grant Anticipation Revenue Vehicle (GARVEE) bonds to expedite highway projects.
BOISE - Interstate 84, Cole Road to Broadway Avenue widening
I-84 drivers now have four eastbound and four westbound lanes, double the pre-construction capacity. The two-year reconstruction project in this area has included installing new drainage, replacing the original two-lane pavement from 1968, and adding two new lanes in both directions.
The speed limit has returned to 65 mph for the first time since construction started in late 2009.
Overhead signs will be placed later in November near the Vista Interchange, completing the project.
Concrete Placing Co. Inc., of Boise, is the contractor on the $35.9 million project.
NAMPA - I-84 widening, Franklin to Garrity
The Interstate 84 eastbound on-ramp at Nampa's Franklin Boulevard is closed. The ramp will remain closed until early 2012, when the project to widen I-84 between the Franklin and Garrity interchanges is complete.
The temporary on-ramp length and configuration is constrained by its proximity to the Phyllis Canal. However, the permanent on-ramp will have no constraints - it will extend on a new bridge over the Phyllis Canal and provide for a longer merging distance with I-84 traffic. Crews are currently working on reconstruction of the new bridge.
Motorists may experience intermittent nighttime lane reductions on I-84. All lanes remain open during the day, and work may be weather dependent.
Once these interstate improvements are complete, I-84 between Franklin and Garrity will be widened to three lanes in each direction, with an additional auxiliary lane for eastbound traffic. The auxiliary lane will allow motorists to enter I-84 at Franklin, remain in the farthest right lane, and exit at Garrity - never having to merge with interstate traffic.
Concrete Placing Company, of Boise, is the contractor on this $22.2 million project.
Following is an update on non-GARVEE state highway construction projects in southwest Idaho.
ADA & GEM COUNTIES
SOUTH OF EMMETT – Idaho 16, Willow Creek Bridge replacement
Traffic has been switched to the new half (the east half) of the bridge as crews continue the replacement of the Willow Creek Bridge on Idaho 16 south of town.
Concrete was placed for the new bridge deck last week. Crews are working on the approaches to the west half of the bridge this week.
The two-lane bridge north of Firebird Raceway on Idaho 16 is being replaced with a wider, three-lane structure. The project started June 20 and is expected to finish in late November.
The contractor is working on the approaches to the bridge, getting ready to pave asphalt. Crews are hoping to be done by the end of this month.
The bridge replacement, at milepost 6.3, will result in a significantly wider bridge - 54 feet wide compared to the current 36-foot width. It also will be slightly longer - 108 feet instead of the current 90 feet. The new bridge will be a single-span structure.
In addition to replacing the bridge, built in 1959, the center lane on the new bridge will transition to match up with the current center turn lane south of the bridge, at the intersection of Chapparal Lane.
North of the bridge, the road will be tapered from three lanes to match the existing two-lane configuration.
Concrete Placing Co., of Boise, is the contractor on this $1.1 million project.
BOISE COUNTY
East of Boise - Mores Creek Bridge upgrade
A project to update the Mores Creek Bridge (commonly known as the High Bridge) on Idaho 21 east of Boise is under way. The project should be done by the end of April 2012.
During this work, the bridge deck and joints will be rehabilitated and the bridge parapet and railing replaced. Work on the foundation during the low-water winter period will include a retaining wall, rock anchoring, slope armoring, and seismic retrofit. Portions of the structural steel will be painted along with other repairs on the structure.
Traffic across the bridge is controlled by signals at either end, with only one direction allowed to pass through at a time. Under normal conditions, the delays are expected to be 15 to 45 minutes in length. In addition, a nine-foot width restriction will be in effect.
Earlier this week, crews moved and reset guardrail and repaved areas on the south end of the bridge, and are now paving asphalt at both ends of the bridge. Crews are starting to drill for rock anchors and permeation grouting. Initial drilling will also help crews to see what they could expect below ground and how long some of the anchors need to be. This will determine how long the drilling for the project is going to take.
Work remains in a one-lane configuration.
RSCI, of Meridian, is the contractor on the $2.8 million project.
EAST OF BOISE - Idaho 21, Robie Creek to Idaho City
Work is under way on shouldering along a 17-mile stretch of Idaho 21 between Robie Creek and Idaho City, and paving and lengthening driveway approaches in that section.
This week, shouldering was primarily completed for the entire stretch. Approaches are complete from milepost 39 to 28, and approach work is proceeding south. Crews are working from 8 a.m. to 5:30 p.m., Monday through Friday, with flaggers controlling traffic.
This summer, that same stretch of highway was repaved. A thin-lift overlay of 1.8 inches of new pavement to extend the life of the pavement and restore the driving surface for a smoother ride was added from milepost 22 to 39.
Speed limit reductions will also be in effect.
Central Paving Co. Inc., of Boise, is the contractor on this $2.1 million project.
NEAR LOWMAN – Fish-passage project
A fish-passage project east of Lowman began June 15 and will continue through early December.
The bridge is in a one-lane configuration using a traffic signal.
This week, the contractor formed and tied rebar for the phase 2 bridge-deck placement, re-routed the creek into a lined chute and continued the last of the stream work. Crews will pour the deck next week and finish the stream work. The creek will then be in its final configuration.
Crews anticipate working a Monday through Thursday, 7 a.m. to 5 p.m. schedule.
This project is being funded through the U.S. Forest Service.
Cannon Builders Inc., of Blackfoot, is the contractor on this $1.2 million project.
ELMORE COUNTY
EAST OF BOISE – I-84 repair
The ongoing project corrects severe pavement deficiencies between Boise and Mountain Home. Traffic has been diverted to the westbound side of I-84, with drivers in a single lane each way.
Traffic will remain that way until approximately the first of December, when the project is finished.
Concrete Placing Co., of Boise, is the contractor on this $10.4 million project.
PAYETTE COUNTY
PAYETTE – U.S. 95, Payette River Bridge replacement
The project to improve the U.S. 95 bridge over the Payette River south of Payette is under way. It is expected to take about two years to complete, finishing in summer 2012.
??Crews are replacing the existing northbound truss bridge (built in 1927) located on U.S. 95 between Fruitland and Payette. The new bridge will be two feet higher off the water. It will have no overhead bracing or struts as the current one does and will be 84 feet in width, eliminating current safety concerns regarding both width and height restrictions.
The new bridge will be constructed next to, and will attach to, the existing southbound bridge. The project also includes minor roadway realignment to tie into the new bridge location.
Crews finished paving the northbound lanes. Traffic will be switched onto the northbound lanes in mid- to late November.
U.S. 95 is the main route connecting northern and southern Idaho. About 18,000 vehicles use this portion of the highway daily. By 2026, the volume is expected to be more than 25,000.
This week, crews are seeding slopes, installing guardrail, striping, installing portable guardrail and setting up traffic control for phase 2 of the project.
JC Constructors Inc., of Meridian, is the contractor for this $6.17 million project.
VALLEY COUNTY
Cascade North City Limits to Donnelly – resurfacing
The project is winding down to provide an overlay on about 15 miles of Idaho 55, from the north city limits of Cascade to Donnelly. The contractor added some aggregate to a turn-out near Little Donner Hill road so that the access for the residents would be less abrupt.
About a day or two of work on a drop inlet for highway drainage also remains. Flaggers may be needed to complete the work. The speed limit is back up to normal levels until that work occurs.
Work is complete except for the inlet. The concrete has been poured. The inlet will have a protective blanket over it for two weeks, until the concrete hardens. No more traffic disturbance is expected.
This thin-lift overlay pavement preservation project from milepost 116 to 131 will add about two inches of new pavement to the existing surface.
The speed limit is 45 mph in the work area. A pilot car will be used in conjunction with flaggers at each end of the work area to hold traffic.
The new asphalt added to the traveling surface will extend the life of the roadway and provide better traction for vehicles.??Work will be done from about 7 a.m. to 7 p.m., with no weekend work and the crew off the roadway by noon on Fridays to accommodate heavy recreational and tourist traffic.
Valley Paving & Asphalt Inc., of Cottonwood, is the contractor on this $2 million project.