8/12/2011
Reed Hollinshead
ITD Communication
208-334-8881
reed.hollinshead@itd.idaho.gov
Southwest Idaho highway construction report for Aug. 12-19
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 are expected to be placed in mid-September near the Vista Interchange, completing the project.
Concrete Placing Co. Inc., of Boise, is the contractor on the $35.9 million project.
MERIDIAN - Interstate 84, Ten Mile Interchange construction
The new I-84, Ten Mile Interchange opened to traffic in May 2011. Landscaping work has been substantially completed. The speed limit is now 40 mph (was 35 mph) on Ten Mile Road and 65 mph (was 55 mph) on I-84.
Four lanes are now available westbound and eastbound between the Meridian and Garrity interchanges
Idaho Sand & Gravel, of Nampa, is the contractor on this $33.8 million project.
NAMPA - I-84 widening, Franklin to Garrity
I-84 westbound motorists can expect nighttime lane reductions Tuesday through Thursday (Aug. 16-18) between 10 p.m. and 5 a.m. This will allow crews to safely move paving equipment.
Work continues at the new Union Pacific Railroad (UPRR) bridge, where girders have been set and crews are constructing the bridge deck. This work will continue through late August. Once the concrete bridge deck is placed, it will be allowed to cure into early September.
Crews will continue to work on bridge retaining walls and abutments through mid-September. Construction of two new bridges over the UPRR and Phyllis Canal are necessary to accommodate the additional lanes on I-84.
Motorists can expect ongoing, intermittent nighttime lane closures for both east- and westbound traffic as crews work to complete the project by early 2012. All I-84 lanes remain open during the day, and work may be weather dependent.
Concrete Placing Company of Boise is the contractor on this $22.2 million project.
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 lane furthest right, and exit at Garrity - never having to merge with interstate traffic.
Following is an update on non-GARVEE state highway construction projects in southwest Idaho.
VARIOUS COUNTIES
Seal coats
Several seal coats on roadway surfaces throughout the southwest Idaho region have been done this summer, and several more are planned. Seal coating extends the life of the roadway and provides greater traction for motorists.
Already this summer, crews have completed seal coats on Idaho 44 and Idaho 55 near Boise, Idaho 71 near Cambridge, and Idaho 55 near McCall. Crews also repaired various spots along Idaho 55 on Horseshoe Bend Hill.
Snake River Construction, of Kimberly, is the contractor on these seal coats. The completed seal coats cost $2.42 million. The remaining work will cost $700,000.
Seal coats will be applied to the surface of 37 miles of highway in the Notus, Parma, Murphy and Nampa areas beginning about Aug. 18, under a separate contract.
These roads will be sealed:
• approximately one mile of U.S. 95 through Parma
• approximately 12 miles of U.S. 20/26 from U.S. 95 through Notus toward Caldwell
• approximately 9.4 miles of Idaho 78 from the junction of Idaho 45 to Murphy
• approximately 14.5 miles of Idaho 45 from the junction of Idaho 78 to Locust Lane in Nampa
Speed limits will be reduced. Traffic will be controlled by lane closures, lane restrictions or pilot cars. Motorists can expect delays of up to 20 minutes.
Crews will work a 9 a.m. to 4 p.m. weekday schedule. Crews can only work Monday through Thursday and have to be off the road by noon on Fridays. Crews can’t work on the weekends due to the heavy recreational and tourism interests in that area during the summer months.
Seal coating begins by applying a layer of asphalt, then a cover coat of gravel on the roadway surface. The highway is rolled and traffic allowed on to the roadway to help pack the surface before "brooming," or sweeping, to remove excess gravel. All brooming will be done at night on all projects.
A properly applied seal coat can add several years of service to a heavily traveled roadway by sealing the surface and adding roughness for winter traction.
The work is done during the day to allow heat to help asphalt and rock bond more quickly to the roadway surface, providing a higher-quality finished product.
Following posted speed limits will reduce the risk of windshield damage caused by loose gravel.
ADA COUNTY
Meridian – I-84 repair
Idaho Transportation Department maintenance crews are repairing badly deteriorated concrete slabs on eastbound Interstate 84 between the Meridian Interchange and Flying Wye. The work started Aug. 2 and should be finished by Aug. 25.
Crews are doing slab repairs and crack sealing the surface from milepost 44 to 47 (starting from just east of the Meridian Interchange and working toward Boise).
The two outside lanes are closed for the work in that stretch.
Crews are working a Tuesday-through-Thursday schedule from 9 a.m. to 4 p.m. They are working outside of the morning and evening commute times to reduce the impact to drivers in this heavily traveled area.
Crews have completed repairs from milepost 44 through milepost 45.75.
BOISE COUNTY?
Near Banks – Road & Bridge project?
The work on the South Fork Payette River Bridge on Idaho 55 near Banks finished just prior to Memorial Day. Paving from Banks south is under way.
The deck of the bridge received a silica fume treatment to prevent further corrosion and penetration by water and salts.
The speed limit is reduced to 35 mph. This is because guardrail has been removed to accommodate the roadwork. Without the guardrail, the highway speed has to be reduced to ensure drivers’ safety.
Crews are working on re-installing guardrail, installing centerline rumble strips and working on the highway shoulders. The speed limit is 45 mph from the bridge north of Horseshoe Bend to Banks. It is 35 mph north of Banks for two miles. Striping is scheduled for next week, and traffic should return to normal speed next week too. There will be some final project items that will require flagging and dropping back to 45 mph for short segments.
The pavement preservation project involves approximately 14 miles of roadway from just north of Horseshoe Bend at the Payette River Bridge north to about two miles north of the Idaho 55 and Banks-to-Lowman road intersection. About 1.8 inches of new pavement have been applied in a thin-lift paving procedure.
Crews are working from about 7 a.m. to 8:30 p.m. Monday through Thursday and from 7 a.m. to noon on Fridays. They have to be off the road by noon on Fridays, and no work is allowed until Monday morning.
Knife River Corp., of Boise, is the contractor on this $2.6 million project.
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.
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.
Crews have finished stabilization at the bridge foundation for this year. The water level rose sooner than normal, so crews will have to complete the foundation work during the next water draw-down period this fall, sometime after Labor Day.
Working two shifts per day, crews are paving the bridge deck and painting the steel structure. Project managers plan to switch traffic to the opposite side of the bridge around August 30, which will narrow the roadway to 11 feet, instead of the current 11 feet 6 inches.
Work remains in a one-lane configuration.
RSCI, of Meridian, is the contractor on the $2.8 million project.
NEAR LOWMAN – Fish-passage project?
A fish-passage project east of Lowman began June 15 and will continue through early December.
The project includes replacing the existing culvert near milepost 83 (Lowman is at milepost 72) with a short-span bridge, followed by stream rehabilitation.
The bridge is in a one-lane configuration with a traffic signal until December. Abutments were poured for phase 1 last week. Crews are currently backfilling the abutments and preparing for girders to be set on Monday (Aug. 15). Once the girders are set, crews will start forming the deck.
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.
Idaho 21, Warm Spring Creek to Canyon Creek
A project to repair the bridge decks on the Warm Springs Creek Bridge and Canyon Creek Bridge on Idaho 21, about 20 miles northeast of Lowman, and do pavement preservation work on the six miles between the bridges began July 6 and will continue through August.
Crews will apply a double seal coat to the roadway surface to address pavement deficiencies from milepost 91.5 to 97.5. The project also will improve subsurface drainage, steep slopes that have sloughed off and substandard guardrail. The work will include guardrail-end treatments, bridge-rail retrofit and bridge-deck rehabilitation.
Depending on the work being performed, three different modes of traffic control will be used:
- A pilot car and flaggers for the seal coating, which should take about two weeks;
– A temporary traffic signal for trench-drain work and retaining-wall work; and
– Flaggers for the rail work on the bridges.
This week, the contractor finished work on the five retaining walls and began work on trench drains, which will continue next week. Flaggers are directing traffic at the site of the trench drains. The double seal coat is planned for the last week in August.
Knife River, of Boise, is the contractor on the $1.25 million project.
GEM COUNTY
SOUTH OF EMMETT – Idaho 16, Willow Creek Bridge replacement
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 bridge replacement, about eight miles south of Emmett 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.
The speed limit will be reduced to 35 mph during construction. Traffic will be shifted but one lane each way will be maintained. Work will begin on the east half of the bridge.
Crews will use traffic drums, temporary guardrail and striping, and normal traffic-control signing. A portable message sign will be installed to alert drivers to the upcoming project a week prior to the beginning of construction.
Crews have removed the first half of the old bridge, and are pile driving for the abutments of the new bridge this week.
In addition to replacing the bridge, built in 1959, the project will require approach work to accommodate the new width of the structure and construction of a temporary detour on the west side of the existing bridge to handle southbound Idaho 16 commuter traffic.
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.
The project will improve the poor condition of the bridge substructure.
Concrete Placing Co., of Boise, is the contractor on this $1.1 million project.
ELMORE COUNTY
EAST OF BOISE – I-84 repair
Westbound Interstate 84 traffic will be funneled into one lane starting Sunday (Aug. 14) for an ongoing project to correct severe pavement deficiencies between Boise and Mountain Home. On Aug. 20, eastbound traffic will also be funneled into one lane on the westbound side. Speed limits will remain at 55 mph while in this configuration, which is expected to extend through Thanksgiving.
?Portable electronic message boards at each end of the project are already in place to announce the upcoming traffic switch.? ?The overall project, which started several weeks ago, begins near milepost 70 (the Stage Stop and Mayfield Road Interchange) and extends east of the Simco Road Interchange to milepost 82.2. The project will finish in early December.
Currently the speed limit drops to 55 mph in the areas where crossovers are being prepared for traffic, and surveyors are working. Work is only conducted during daylight hours. The temporary lane closures are removed after work each day and the speed limit restored to 75 mph.
The ramps at exits 71 (Stage Stop) and 74 (Simco Road) will be resurfaced. The speed limit will be reduced to 35 mph for exiting ramp traffic.? ?Crews have adopted an aggressive schedule, working Mondays through Saturdays.
Concrete Placing Co., of Boise, is the contractor on this $10.4 million project.
I-84 slab repair, near Glenns Ferry
A project is now under way to repair deteriorating concrete slabs on the east- and westbound lanes of Interstate 84 near Glenns Ferry. The project is expected to finish in late September. ??This pavement maintenance project will extend from milepost 114 (east Hammett) east to Glenns Ferry, a distance of about seven miles. The project began July 6.
Several badly damaged concrete slabs in that stretch will be removed and replaced. Repairs also will include resealing pavement joints, repairing pavement cracks and chips, and grinding portions from the existing pavement surface.??Crews will work Monday through Saturday. The speed limit will drop to 65 mph in the overall construction zone, and to 45 where workers are present.
Work continues, with lane closures of variable lengths.
Interstate Improvement Inc., of Faribault, Minn., is the contractor on this $2.6 million project.
OWYHEE COUNTY
Idaho 78 and Idaho 51 resurfacing
A pair of resurfacing projects on rural sections of Idaho 51 and Idaho 78 began July 11.
A thin-lift overlay will be added to the pavement surface on 32 miles of rural highway. The resurfacing is expected to finish in about two months.
Work began first on Idaho 78 and is proceeding toward the junction with Idaho 51, then will move to Idaho 51 from milepost 60 to the Snake River Bridge. The work is necessary to correct cracking and roughness, and to preserve the existing highway system.
Crews will be working 10-hour days, six days per week. Flaggers and pilot cars will be used for traffic control.
The contractor has finished mainline paving on Idaho 78 and is in the process of paving the approaches. On most of Idaho 78, the permanent pavement markings have been applied and the highway has returned to normal speed limits. There will still be reduced speeds in the construction zones around the approach work, however.
All paving is finished from milepost 60 to the Snake River Bridge at milepost 76.9 on Idaho 51. Most paving on Idaho 78 is completed, and crews are doing some shoulder work at night, from 7 p.m. to 7 a.m.
Idaho Sand & Gravel Co., of Nampa, is the contractor on this $3.4 million project.
Grasmere north – Idaho 51 resurfacing
About 21 miles of rural Idaho 51 from Grasmere north will be resurfaced in a project that is expected to begin Monday (Aug. 15). The project will likely extend into late fall.
The resurfacing will go from milepost 34 to 55 at Broken Wagon Flat Road. A cold in-place recycling technique will be used on part of the route, during which crews break up a layer of old pavement and add additional oil to restore flexibility. The highway surface is then shaped and compacted, and overlayed with a top layer of new pavement. This is primarily used on medium- or low-volume roads. A standard overlay will be used on the section from Grasmere north for the first 14 miles.
That paving begins on Monday, and the cold in-place recycle is expected to begin a week later, Aug. 22.
The speed limit will be reduced to 45 mph in the work area.
Idaho Sand & Gravel Co., of Nampa, is the contractor on this $3.4 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.
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.
Traffic will utilize the southbound bridge while the new bridge is constructed. Traffic will then be switched to the new bridge while modifications to the southbound bridge are made and it is connected to the new bridge.
The first two bridge-deck sections have been completed, leaving one third of the deck in the center to be completed. Deck formwork construction is in progress for the middle section of deck. Parapet has been completed on the south section of the new deck and is in progress at the north deck.
The approach slab at the south end of the bridge has been completed, and an approach slab is being constructed at the north end of the bridge. Forms have been stripped from beneath spans 1 and 2.
The first two deck sections have been completed, leaving one-third of the deck in the center to be finished. Formwork construction is in progress for the middle section of deck. Parapet has been completed on the south section of new deck and is in progress at the north deck section. Approach slabs at both ends of the bridge have been completed. Granular subbase is complete for the new road north and south of the bridge.
The base course has been completed for the roadway except at Killebrew Drive and Alden Road. Killebrew will be closed from Monday to Wednesday (Aug.15-17) to build the roadway level up to grade and place the base course. Motorists should plan alternate routes around Killebrew. One lane of traffic will be kept open on Alden as each side of the road is constructed.
JC Constructors Inc., of Meridian, is the contractor for this $6.17 million project.
VALLEY COUNTY
Cascade North City Limits to Donnelly – resurfacing
A project to provide an overlay on about 15 miles of Idaho 55, from the north city limits of Cascade to Donnelly, began June 27. The work is expected to finish in September.
This thin-lift overlay pavement preservation project from milepost 116 to 131 will add about two inches of new pavement to the existing surface.
Paving work began on Aug. 1 and continues. 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. Under normal circumstances, Delays should be limited to 15 minutes.
Once paving is complete, the speed limit will remain 45 mph until permanent pavement markings are complete.
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.