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Reed Hollinshead
ITD Office of Communication
(208) 334-8881

Southwest Idaho highway construction report for Oct. 26-Nov. 2

BOISE - The following projects in southwest Idaho are now under way.

BOISE - Idaho 16 Extension, Boise River Crossing

Work is under way for the first phase of the extension of Idaho 16, which will be complete in August 2014.

Crews will connect State Street (Idaho 44) to Chinden Boulevard, including a new bridge over the Boise River.

Pile installation and subsequent foundation and column construction south of the Boise River Channel commenced in earnest last month. Construction of the future SH 16 road grade is under way, and the contractor started importing embankment material.

With pile driving on the north completed, the contractor will focus on completing this activity on the south. All pile driving should be completed by late December 2012. The contractor plans to immediately follow pile driving with construction of foundation and columns in order to complete construction of work in or directly adjacent to the river.

Concrete Placing Co. Inc., of Boise, is the contractor on this $19.4 million project.

BOISE - Idaho 16 Extension, Phyllis Canal Bridge and South Segment

This project extends Idaho 16 from U.S. 20/26 (at McDermott Road) to Joplin Road, where it ties in to the new Idaho 16 Boise River Bridge project.

Irrigation and drainage features were installed and preparations made to start work in the Pollard area.
It is anticipated that the contractor will soon complete construction of the roadway embankment below the Boise River terrace and start in the areas between the Phyllis Canal and U.S. 20/26.

Substantial Completion is expected in December 2013, with overall completion in August 2014.

Concrete Placing Co Inc. is the contractor on this $10.8 million project.

MERIDIAN - Eagle Road resurfacing and medians

Work has been under way since early summer on this project, which is resurfacing Idaho 55 from Fairview Avenue in Meridian to State Street in Eagle, and installing raised medians from Franklin to Oakhampton Drive, one-half mile north of Chinden Boulevard.

Crews will continue to work on Phase 3 from Hobble Creek Drive to Idaho 44 on Eagle Road. Over the next couple of weeks, crews will:
-    Pave the roadway between Chinden Boulevard and Idaho 44
-    Continue to remove and replace pedestrian sidewalk ramps
-    Continue to work at the Chinden Boulevard and Eagle Road intersection

The work to repave Eagle Road is very noisy. ITD anticipates the nighttime noise impacts will end in early November. We apologize for the inconvenience.

Construction is on schedule to be completed in mid-November.

Idaho Sand & Gravel Co., of Nampa, is the contractor on this $4.7 million project.

Linder Rd./State St./Ballantyne Lane intersection work

Survey crews and utilities continue gathering preliminary data in anticipation of improvements to the Idaho 44/Linder Road intersection. Construction activities will be starting in about a month with the building of stormwater retention ponds. Utility work is slated for late October or early November.

The project will ultimately reconstruct the intersection of Idaho 44 and Linder, including the reconstruction and expansion of Idaho 44 between Linder and Ballantyne and the rebuilding of Linder in the vicinity of Idaho 44. ITD anticipates this project will be completed by fall 2013.

Traffic phasing on this project will consist of three major traffic shifts. Traffic control will consist of channelization, lane width reductions, shoulder closures, temporary signals, and speed reductions. Lane restrictions other than reducing width and closures will be restricted to off-peak times.  

Utility relocates will start in early November, with the start of construction anticipated to begin in late November.

Central Paving, of Boise, is the contractor on this $9.23 million project.

Repair of seven bridge decks

The repair and resurfacing of bridge decks on seven bridges from Boise through Mountain Home and to the east is wrapping up.

The contractor has completed all work on the Canyon Creek overpass at milepost 92, 18th Street overpass at milepost 94, Hwy 95 Interchange at U.S. 20, the Oregon Trail Interchange at milepost 99, and Hammett Interchange at milepost 112. Work is finishing on the Mayfield Interchange bridge at milepost 71 on I-84.

Concrete Placing Co. Inc., of Boise, is the apparent low bidder on the $1.72 million repairs.

Idaho 21 resurfacing to Lowman

A resurfacing project covering 20.4 miles of Idaho 21 in Boise County is under way and will finish in Oct. 2013.

The project runs from Mores Creek Summit to Clear Creek Bridge below Lowman, adding a Stress-Absorbing Fiberglass Layer with Emulsified Asphalt (SAFLEA) on two adjoining sections of Idaho 21 (milepost 52.3 to 60 and 60 to 72.7), conducting slope stabilization, and upgrading guardrail at existing locations.

A SAFLEA treatment is a seal coat with a coating of chopped glass fibers between the oil and gravel aggregates to enhance durability and reduce cracking.

One lane of travel will remain open, with flaggers and pilot cars helping to guide traffic. Crews will work a 7 a.m. to 5 p.m. schedule Monday-Thursday and will work half days on Fridays. No work is allowed on the weekends.

Knife River Corp, of Boise, is the contractor on this $3.9 million project.

Idaho 55 resurfacing in Marsing, Caldwell

A resurfacing project is under way at two locations between the Snake River Bridge in Marsing and Pride Lane in Huston, which is just to the west of Caldwell. The project spans 8.5 miles north from the bridge.

Work on this short project, which involves recycled asphalt and an overlay treatment, is expected to finish by the end of November. The two project locations are separated by just a few miles.

One lane of traffic will remain open, and motorists will be guided by flaggers on this two-lane road. The speed limit will be reduced to 35 mph in the work zone, and brief delays are expected. The delays should be 5-15 minutes typically, and up to 30 minutes if crews are working on the lower and upper sections at the same time and drivers get caught at both stops.

The section of SH 55, from the junction of SH 78 and SH 55 to the junction of Farmway Road and SH 55, is closed to oversized loads. Oversized loads are defined as greater than 12 feet wide x 65 feet long.

The detour for oversized loads is as follows: Southbound SH 55 must turn right on northbound Farmway Road and continue northbound to SH 19. They must turn left on westbound SH 19 and continue to U.S. 95. They must turn left on southbound U.S. 95 and continue south to the Jct. of U.S. 95 and SH 55 and either continue south on U.S. 95 or continue north on SH 55 to SH 78.  

The detour route is reversed if drivers are headed north on SH 78.

Knife River Corp. Northwest, of Boise, is the contractor on this $933,000 project.

I-84 median leveling, Black Canyon to Sand Hollow

The median of Interstate 84 near Sand Hollow, a few miles east of Black Canyon, is being leveled in a project expected to finish by the end of the month. Crews are removing the berms in the median of the interstate. The leveling is a safety improvement to minimize water runoff that created soft-spot hazards in the median.

The speed limit will be reduced to 65 mph weekdays (during the day) between milepost 13 (Black Canyon) and 17 (Sand Hollow), and the inside (left) lanes will be coned off in each direction during the work.

Crews are using dozers, excavators, scrapers, graders and trucks, working from Black Canyon east toward Caldwell.

The work, and budget, is about 25 percent completed.

Irvco Asphalt & Gravel Inc., of Fruitland, is the contractor on this $235,000 work.

CASCADE – Bridge and Roadwork

A replacement of the North Fork Payette River Bridge in downtown Cascade is now under way, with two miles of pavement resurfacing on Idaho 55 in town included. The bridge work will extend into summer 2013.

ROADWORK:?This week, the contractor finished up removing old signs and installing new signs and delineators. All work is on the shoulder of the road, with no traffic impacts. Work on this roadwork phase wrapped up this week.

C & A Paving, of Boise, is the contractor on this $1.86 million project.

BRIDGE WORK: This project will replace the old (built in 1933), narrow, width-restricted bridge 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.

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.

This week, the contractor filled the bent piles with concrete and formed the bent caps. They also backfilled and started to build the roadway near Abutment 2. Next week, the contractor hopes to pour bent caps and continue roadwork. Traffic impacts are minimal. Flaggers are being used when lane closures are necessary.

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.

Wadsworth Brothers Construction Co. Inc., of Draper, Utah, is the contractor on this $4.83 million project.


Highway construction is one of the key forces pushing Idaho toward continued economic vitality by creating jobs, improving safety and reducing traffic congestion.