ITD Office of Communication
Southwest Idaho highway construction report for Dec. 21-28
BOISE - The following projects in southwest Idaho are now under way.
BOISE - Idaho 16 Extension, Boise River Crossing plus Phyllis Canal Bridge replacement and South Segment
Work is under way on the extension of Idaho 16, which will be complete in late summer 2014.
Crews will connect State Street (Idaho 44) to Chinden Boulevard, including a new 1726-foot bridge over the Boise River. Idaho 16 is also being extended from U.S. 20/26 (at McDermott Road) to Joplin Road, where it ties in to the new Idaho 16 Boise River Bridge project.
The roadway base is still being filled for the new Joplin Court Road to the east of Idaho 16. This road runs east from Joplin Road under the new highway to provide local access to the east side of the road.
Many of the steel piles have been driven. In total, there will be 660 of the 16-inch diameter, concrete-filled piles driven beneath the footings of the bridge to provide lateral stability.
There will be no work on this project, other than normal maintenance activities, between Dec. 22 and Jan. 2.
Concrete Placing Co. Inc., of Boise, is the contractor for both the first segment, which is the $19.4 million construction of the river crossing, as well as for the second segment, which includes the $10.8 million work to the south and a crossing of the Phyllis Canal Bridge.
MERIDIAN - Eagle Road resurfacing and medians
Work is wrapping up for the winter on this project, which has resurfaced Idaho 55 from Fairview Avenue in Meridian to State Street in Eagle, and installed raised medians in many locations from Franklin north.
During the holidays, limited construction activity will occur at the Eagle Road and Chinden Boulevard intersection. The speed limit will go back up to 55 mph. Over the next few months crews will:
- Finish placing sidewalks and landscaping at the Chinden and Eagle intersection
- Place a final coat of striping along the entire roadway from Franklin Road to Idaho 44
- Begin to place medians on Chinden Boulevard east of Eagle Road
In late winter/early spring, ITD plans to place a signal at the intersection of Wainwright Street and Eagle Road.
Idaho Sand & Gravel Co., of Nampa, is the contractor on this $4.7 million project.
State St./Linder Rd./Ballantyne Lane intersection work
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.
Crews will be installing conduit along the shoulder of Idaho 44. Most work will be done with only a shoulder closure required, although an occasional lane closure may be needed.
Construction activity will be reduced from Friday, Dec. 21 through Wednesday, Jan. 2.
- The speed limit will be raised back up to 55 mph.
- Utility work will continue as crews relocate power lines, cables and drainage to prepare the construction zone.
Central Paving, of Boise, is the contractor on this $9.23 million project.
ADA, BOISE COUNTY
Replacement of Dynamic Message Signs
In this project, DMS signs are being replaced in several locations, primarily on Idaho 21. The work involves removing the existing message signs and controller cabinets and replacing them with upgraded signs and cabinets at their current locations.
The sign locations are on Idaho 21 at the junction to Warm Springs, Idaho City, Lowman, and Stanley. And on the Banks to Lowman Highway at Banks, and Idaho 55 near the Shadow Valley Golf Course.
Work is suspended currently, but may begin again shortly after Christmas.
Quality Electric Inc., of Boise, is the contractor on this $321,000 project. The work, which is not impacting traffic, is expected to finish by January 2013.
Idaho 21 resurfacing to Lowman
A resurfacing project covering 20.4 miles of Idaho 21 in Boise County is wrapping up for this construction season. The project has been suspended for the winter. Work will resume after June 15, as consistently hot temperatures are required for the remaining resurfacing.
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.
Knife River Corp, of Boise, is the contractor on this $3.9 million project.
CASCADE – Bridge Replacement
A replacement of the North Fork Payette River Bridge in downtown Cascade is now under way. The bridge work will extend into late fall 2013.
This summer also saw resurfacing of the roadway between the bridges in town. The contractor worked on installing two new inlets this week and a manhole to better control the roadway drainage. A manhole cover may need to be replaced in the spring, but right now there is too much snow on the ground to tell.
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.
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 continued to form up the deck on the new bridge. The project will shut down for the holidays on Dec. 20 and not resume until Jan. 2, 2013.
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.