11/23/2007
Southwest Idaho highway construction report for Nov. 23 - Nov. 30
ADA COUNTY
10 Mile Road Overpass repairs
The Ten Mile Road Overpass closed to all traffic on Nov. 8 to allow crews to repair the damaged structure. The closure is expected to last until mid- to late December. Two girders on the bridge were struck and damaged by an over-height vehicle in early May, causing the overpass to be restricted to one lane of traffic. The structure must be completely closed to allow significant repair work to damaged areas.
Locust Grove Overpass construction
Work started in December 2006 on a new overpass that will connect Locust Grove Road and offer an extended route over Interstate 84 between Eagle Road and Meridian Road. The overpass will open on Thursday, Nov. 29. Currently, Locust Grove Road south of Interstate 84 ends near the interstate. The north side of Locust Grove Road also ends near Interstate 84. The inside lane of eastbound and westbound I-84 near the construction site closed in March and will remain closed until the end of November. The closure allowed for construction of the center overpass pier and new median barrier. The speed limit is reduced from 65 miles per hour to 55 miles per hour. The new overpass will consist of two lanes in each direction, sidewalks and bike lanes on both sides of the overpass. Concrete Placing Co. of Boise is the contractor on the $5,845,000 project.
BOISE COUNTY
Dunnigan Creek Bridge
Construction started in June to replace the Dunnigan Creek Bridge over Mores Creek. The bridge is located 14 miles south of Idaho City and seven miles north of the Mores Creek High Bridge. The 70-year-old bridge will be replaced with a taller, wider structure. Slope stabilization also will be done along Idaho 21 before and after the bridge. There will be a temporary crossing over Mores Creek while the new bridge is built, which will maintain one lane in each direction for motorists. The speed limit in the construction area will be reduced from 45 mph to 25 mph. There will be occasional traffic stops at approximately 15-minute intervals at the construction site. There may be some construction activity on weekends. The work is scheduled to be finished close to Nov. 30. McAlvain Excavation is the contractor on the $2.3 million project.
CANYON COUNTY
Interstate 84, Exit 29/Franklin Interchange rebuilding
The Exit 29/Franklin Road Interchange is being rebuilt to improve access to Caldwell from I-84, improve traffic flow and ease congestion. The interchange rebuilding, which started in early December 2006, will enhance several aspects of the interchange. The current two-lane Franklin Overpass will be replaced with a six-lane bridge. The new overpass will have two through lanes in each direction and dual left turn lanes in each direction. The interchange ramps are being lengthened and widened to two lanes at their intersection with Franklin. Eastbound on-ramp traffic from Franklin Road onto Interstate 84 is using a temporary ramp. Westbound off-ramp traffic from Interstate 84 onto Franklin Road also is using a temporary ramp, just west of the current ramp. Both temporary ramps are a single lane each. Those ramps, scheduled to be in place for several months, will allow crews to rebuild the closed ramps. Once finished, the new ramps will offer two lanes each. The eastbound off-ramp and westbound on-ramp will have traffic shifted to temporary ramps at a later date. The project also involves widening Franklin Road from two to five lanes between the overpass and Specht Avenue. The new road will have a curb, gutter, sidewalk, bicycle lanes and shoulder. Aviation Way will be widened at the intersection with Franklin Road. A new traffic signal also will be added. Lanes may be reduced temporarily on Franklin Road and Aviation Way during the widening. Both roads will remain open during construction. One or both lanes of I-84 may be closed between 7 p.m. and 5 a.m. for safety while crews replace the overpass. Traffic will be detoured. A new bridge and three new lanes are now being used after the old overpass was torn down. At the project's completion, all six new overpass lanes will be opened. Concrete Placing Co. is the contractor for the $25 million project. Construction is scheduled to be finished in the fall of 2008.
For current driving conditions on Idaho highways, dial 5-1-1 or visit 511.idaho.gov.
10 Mile Road Overpass repairs
The Ten Mile Road Overpass closed to all traffic on Nov. 8 to allow crews to repair the damaged structure. The closure is expected to last until mid- to late December. Two girders on the bridge were struck and damaged by an over-height vehicle in early May, causing the overpass to be restricted to one lane of traffic. The structure must be completely closed to allow significant repair work to damaged areas.
Locust Grove Overpass construction
Work started in December 2006 on a new overpass that will connect Locust Grove Road and offer an extended route over Interstate 84 between Eagle Road and Meridian Road. The overpass will open on Thursday, Nov. 29. Currently, Locust Grove Road south of Interstate 84 ends near the interstate. The north side of Locust Grove Road also ends near Interstate 84. The inside lane of eastbound and westbound I-84 near the construction site closed in March and will remain closed until the end of November. The closure allowed for construction of the center overpass pier and new median barrier. The speed limit is reduced from 65 miles per hour to 55 miles per hour. The new overpass will consist of two lanes in each direction, sidewalks and bike lanes on both sides of the overpass. Concrete Placing Co. of Boise is the contractor on the $5,845,000 project.
BOISE COUNTY
Dunnigan Creek Bridge
Construction started in June to replace the Dunnigan Creek Bridge over Mores Creek. The bridge is located 14 miles south of Idaho City and seven miles north of the Mores Creek High Bridge. The 70-year-old bridge will be replaced with a taller, wider structure. Slope stabilization also will be done along Idaho 21 before and after the bridge. There will be a temporary crossing over Mores Creek while the new bridge is built, which will maintain one lane in each direction for motorists. The speed limit in the construction area will be reduced from 45 mph to 25 mph. There will be occasional traffic stops at approximately 15-minute intervals at the construction site. There may be some construction activity on weekends. The work is scheduled to be finished close to Nov. 30. McAlvain Excavation is the contractor on the $2.3 million project.
CANYON COUNTY
Interstate 84, Exit 29/Franklin Interchange rebuilding
The Exit 29/Franklin Road Interchange is being rebuilt to improve access to Caldwell from I-84, improve traffic flow and ease congestion. The interchange rebuilding, which started in early December 2006, will enhance several aspects of the interchange. The current two-lane Franklin Overpass will be replaced with a six-lane bridge. The new overpass will have two through lanes in each direction and dual left turn lanes in each direction. The interchange ramps are being lengthened and widened to two lanes at their intersection with Franklin. Eastbound on-ramp traffic from Franklin Road onto Interstate 84 is using a temporary ramp. Westbound off-ramp traffic from Interstate 84 onto Franklin Road also is using a temporary ramp, just west of the current ramp. Both temporary ramps are a single lane each. Those ramps, scheduled to be in place for several months, will allow crews to rebuild the closed ramps. Once finished, the new ramps will offer two lanes each. The eastbound off-ramp and westbound on-ramp will have traffic shifted to temporary ramps at a later date. The project also involves widening Franklin Road from two to five lanes between the overpass and Specht Avenue. The new road will have a curb, gutter, sidewalk, bicycle lanes and shoulder. Aviation Way will be widened at the intersection with Franklin Road. A new traffic signal also will be added. Lanes may be reduced temporarily on Franklin Road and Aviation Way during the widening. Both roads will remain open during construction. One or both lanes of I-84 may be closed between 7 p.m. and 5 a.m. for safety while crews replace the overpass. Traffic will be detoured. A new bridge and three new lanes are now being used after the old overpass was torn down. At the project's completion, all six new overpass lanes will be opened. Concrete Placing Co. is the contractor for the $25 million project. Construction is scheduled to be finished in the fall of 2008.
For current driving conditions on Idaho highways, dial 5-1-1 or visit 511.idaho.gov.