9/20/2013
Reed Hollinshead
ITD Communication
208-334-8881
reed.hollinshead@itd.idaho.gov
Southwest Idaho highway construction report for Sept. 20-27
BOISE - The following projects in southwest Idaho are now under way or will begin soon.
ADA COUNTY
BOISE - Idaho 16 Extension, river crossing and local road connections (GARVEE)
A 2.5-mile extension of Idaho 16 is under way, connecting Chinden Boulevard (U.S. 20/26) to State Street (Idaho 44), including construction of a 1,726-foot-long, 11-span, 10-pier, 88-foot-wide bridge over the Boise River and a new crossing of the Phyllis Canal. More than 1.5 million pounds of rebar and over 36.6 million pounds of concrete are used in the bridge.
Work is expected to finish by the fall of 2014.
Concrete guardrails will separate traffic from construction activities, and motorists are strongly encouraged to drive with caution. The speed limit is 45 mph.
Temporary paving is under way as construction crews prepare Idaho 44 (State Street) and the new alignment of Idaho 16 for permanent paving, scheduled to begin in mid-September. Utility crews are working to move or replace infrastructure outside of the future roadway.
On the bridge, crews have paved the left shoulder south of the structure, and placed several sections of bridge deck and concrete barrier. The contractor hopes to have all bridge decks placed by Halloween if weather and other factors permit. Crews may begin concrete pavement on the north side of the river in early October.
Depending on the weather, traffic will shift to the new alignment of Idaho 16 north of Idaho 44 in early October. At that time, crews will begin the reconstruction of U.S. 20/26 (Chinden Boulevard). Motorists can expect to use the Idaho 16 extension between Idaho 44 and U.S. 20/26 in late summer 2014.
GARVEE (Grant Anticipation Revenue Vehicle) bonds allowed the Idaho Transportation Department to advance critical infrastructure improvements in vital corridors throughout the state.
Concrete Placing Co., of Boise, and Idaho Sand & Gravel, of Nampa, are the prime contractors on these projects. Knife River Construction, of Boise, and Nampa Paving are two of the main subcontractors for this work. The total construction cost is $38.94 million.
ADA COUNTY
EAST BOISE – Resurfacing on I-84 from milepost 60 to 70
ITD wants the public to be aware that construction activities on Interstate 84 east of Boise, between the Eisenman and Mayfield exits, have moved traffic over to one side of the interstate for one-lane travel in both directions until late October. The contractor has accelerated work and is ahead of the original schedule.
The eastbound rest area has reopened, but the westbound Blacks Creek Rest Area and the Eisenman and Blacks Creek off-ramps will be closed until the project finishes.
Crews have completed work on the eastbound side. On the westbound side, the contractor has finished milling and an overlay SAFLEA treatment. Work continues on the weigh-in-motion project.
Central Paving Co., of Boise, is the contractor on this $8.8 million project.
ADA COUNTY
EAGLE - State Street/Linder Road/Ballantyne Lane intersection work
Crews are rebuilding the Idaho 44/Linder Road intersection and widening Idaho 44 to five lanes. The work will improve safety, reduce congestion and allow for smoother traffic flow.
The east- and westbound lanes of Idaho 44 shifted to the north side of the highway in late June. The traffic shift on Idaho 44 will be in place until the project finishes.
Crews are paving approaches, performing some shoulder work and doing final striping this week. The project is slated to be complete by Oct. 8.
Central Paving, of Boise, is the contractor on this $9.23 million project.
ADAMS, WASHINGTON COUNTY
U.S. 95 resurfacing Manns Creek to Alpine Store
Work in wrapping up on 31 miles of resurfacing on U.S. 95, from Manns Creek to Shoepeg Road and Cambridge to the Alpine Store.
Crews are working on asphalt curbing, pavement striping and delineators, and should be done late this week or early next week. An irrigation ditch will be realigned later this fall.
The work was part overlay and part CRABS (Cement Recycled Asphalt Base Stabilization). CRABS is an in-depth resurfacing method. The existing roadway is pulverized down to the gravel base, cement is added to the pulverized material, and finally a new layer of asphalt pavement is placed on top.
More than 6,000 feet of guardrail will be replaced to meet current standards. The project also
will include some improvements to bridge decks and the current drainage systems at Monroe Creek (milepost 88.3) on the southern end of the project area and 18 miles farther north at Keithly Creek (milepost 106.5).
Knife River Corp. Northwest, of Boise, is the contractor on this $6 million project.
BOISE COUNTY
GARDEN VALLEY - South Fork Payette River Bridge
Crews are working to replace the old bridge over the south fork of the Payette River near Garden Valley.
The old bridge, located southwest of town, also called the Alder Creek Bridge or Silver Bridge, has a sufficiency rating of less than 50. Boise County is the local sponsor. The new bridge will be relocated upstream and the existing bridge will serve as a detour during construction.
Work was completed on the second drilled shaft, and the abutments are being formed and poured. Work on the initial phase of the project will continue until the winter shutdown period in early December.
The other half of the bridge will be built starting next spring, after crews remove the existing bridge. The work is expected to take most of the summer.
Ralph L. Wadsworth Construction Company Inc., of Draper, Utah, is the contractor on this $2.3 million project.
This is an LHTAC (Local Highway Technical Assistance Council) project. ITD has oversight responsibility for this work.
PAYETTE COUNTY
FRUITLAND - SW 3rd Street; Iowa Avenue to Jct. U.S. 95
This Local Highway Technical Assistance Council (LHTAC) project is a reconstruction of the main street through old downtown. The pavement is old and excessively patched, sidewalks are deficient and there are drainage issues.
Work is progressing on phase 3. Paving is scheduled for the first week of October. The project should be substantially complete by the middle of October.
The city of Fruitland is the local sponsor.
Irvco Asphalt & Gravel, of Fruitland, is the contractor on this $2.25 million project.
VALLEY COUNTY
CASCADE – Bridge Replacement
Replacement of the North Fork Payette River Bridge in downtown Cascade continues. The bridgework will extend into late fall 2013.
This project will replace the old, narrow, width-restricted bridge built in 1933 with one more than twice as wide. The existing bridge is 24 feet wide, and will be replaced with a 60-foot wide, 393-foot long, three-span bridge. The new bridge will have two 12-foot lanes, two 11-foot shoulders and a 14-foot median.
In addition, a paved extension will be built to the dirt shared-use path under the bridge on the north side of the river that provides access from both sides of the bridge to the new riverside park. The short section under the west half of the new bridge has been graded, but has not yet been paved.
In the first stage, two-thirds of the new bridge will be built to the west of the existing structure. Traffic will be maintained on the existing bridge through this first stage of bridge work, and then will be routed to the new section of bridge for the remaining work as the old bridge is demolished. There will be traffic interruptions while the new roadway section leading to the new bridge is built.
From Monday through Thursday, work that limits drivers to one lane in each direction is only allowed between 9 a.m. and 4 p.m. Two lanes will be maintained between noon Friday and noon Monday. A river safety and navigation plan will be in place for recreationists that use this section of the river.
This week (Sept 16-20), the contractor finished forming the bridge deck and building the Stage 2 roadway to grade and preparing for paving. Next week (Sept 23-27), crews will begin placing rebar in the bridge deck. There will be flagging during asphalt paving.
Wadsworth Brothers Construction Co. Inc., of Draper, Utah, is the contractor on this $4.83 million project.
WASHINGTON COUNTY
WEISER – replacement of bridge over Weiser River
The replacement of a 78-year-old bridge over the Weiser River south of Weiser has begun, with several significant traffic impacts. The work on U.S. 95 is expected to be done by mid-December.
Traffic is restricted to one lane across the bridge. North- and southbound traffic will alternate across the bridge, controlled by temporary signals at both ends of the structure.
Drivers are reminded to use patience during reconstruction and perhaps consider an alternate route, such as Oregon State Route 201 and the U.S. 95 Spur.
Traffic volume increases on U.S. 95 on weekends, so electronic message boards, both on the side of the highway and overhead on westbound I-84, will be used to alert motorists of bridge restrictions.
Crews plan to work Mondays through Fridays, but will be off the highway on weekends and holidays.
The two-lane bridge, one of 99 remaining on the state system built before 1936, will be replaced with a three-lane structure.
The existing bridge has 26 feet of drivable width, but the new one will be expanded to 48. An average of 7,300 vehicles use the bridge daily. More than 100 million vehicle trips have been taken across the bridge during its lifetime.
In addition to replacing the aging bridge, crews also will reconstruct more than 500 feet of bridge approaches at the north and south ends.
The existing bridge has a sidewalk and two 13-foot lanes but no shoulders. The new bridge will have two 12-foot lanes and a 12-foot center turn lane. The project features a two-foot buffer next to the decorative bridge railing, a five-foot shoulder and a five-foot sidewalk on the west side. No bike lanes will be included in the project.
The new bridge will be 346 feet long and 55 feet wide, including the parapet.
The contractor has completed the Pier 2 cap and is allowing it to cure. Crews will begin setting girders over the two remaining spans next week.
Braun-Jensen, of Payette, is the prime contractor on the $4.8 million project.