Transportation

Polk County US-64 Rockslide Update For December 3

Thursday, December 03, 2009 | 03:56 pm
Workers prepare slope for trim blasting
Workers prepare slope for trim blasting
Material dislodged from blast
Material dislodged from blast
Explosive Charges Detonated on Western Slope
 
CHATTANOOGA, Tenn. – Crews with contractor Charles Blalock & Sons today set off explosive charges on the western portion of the slope in order to remove a seam of unstable rock as part of the overall remediation plan.  The contractor drilled a series of holes through the unstable rock layer to the desired depth, set off the explosive charges, and successfully exposed a stable layer of rock that is less susceptible to future slides.  The contactor plans to continue working from the west side of the slope to the east with drilling and trim blasting operations and will begin hauling away slide debris this week as work progresses to the east. The larger debris will be broken into a manageable size using a hoe-ram, loaded on to dump trucks and removed from the site.
 
Hand scaling, drilling, and trim blasting operations are expected to continue through Sunday as weather permits.

Tennessee Remembers Victims of Impaired Driving

Thursday, December 03, 2009 | 03:48 pm
327 teddy bears lined the lobby of the Tennessee Performing Arts Center in remembrance of those killed in alcohol related crashes in 2008.
327 teddy bears lined the lobby of the Tennessee Performing Arts Center in remembrance of those killed in alcohol related crashes in 2008.
Brad Bulla, who lost his son in a traffic crash that involved a drunk and drugged driver, plays a song he wrote in remembrance of his son.
Brad Bulla, who lost his son in a traffic crash that involved a drunk and drugged driver, plays a song he wrote in remembrance of his son.
December is National Drunk and Drugged Driving Prevention Month
 
NASHVILLE – Tennessee Department of Transportation Governor’s Highway Safety Office Director Kendell Poole joined numerous state and local law enforcement agencies and safety advocates today to remind Tennesseans about the dangers of driving impaired this holiday season. 
 
As a visual reminder of the severe result of impaired driving, 327 teddy bears lined the lobby of the Tennessee Performing Arts Center in remembrance of those killed in alcohol related crashes in 2008. After the ceremony the bears were given to Tennessee Child Passenger Safety Centers where they will be distributed to needy children.
 

Polk County US-64 Rockslide Update For December 2

Wednesday, December 02, 2009 | 06:07 pm
Trim Blast Scheduled for Tomorrow
 
CHATTANOOGA, Tenn. – US-64 in Polk County continues to be closed at mile marker 17.6 due to a major rockslide near the Ocoee 2 Dam. A portion of Little Frog Mountain slid into the roadway on November 10, 2009. The project to remove the rockslide debris and repair the roadway is underway and expected to take at least eight weeks.
 

Polk County US-64 Rockslide Update For December 1

Tuesday, December 01, 2009 | 04:03 pm
A crane mounted platform drill is used to drill into the rock slope on Little Frog Mountain
A crane mounted platform drill is used to drill into the rock slope on Little Frog Mountain
CHATTANOOGA, Tenn. – Today, crews continued the scaling operation on the east side of the slide area to remove loose boulders and debris as workers on the west side of the slope constructed a crane-mounted work platform and began drilling the west slope with a track mounted hydraulic drilling machine.  Drilling is scheduled to continue through tomorrow and Thursday, weather permitting, in preparation for a scheduled trim blast on Thursday afternoon. Holes will be drilled to a depth where there is a stable layer of rock, cleaned out, loaded with TNT and blasted. This will remove the unstable rock and leave a stable layer that is less likely to slide in the future.
 
Hand scaling, drilling, and trim blasting operations are expected to continue through Sunday as weather permits.
 

Polk County US-64 Rockslide Update For November 30

Monday, November 30, 2009 | 04:11 pm
An aggregate base pad cushions the weight of the 275 ton crawler crane.
An aggregate base pad cushions the weight of the 275 ton crawler crane.
CHATTANOOGA, Tenn. – US-64 in Polk County continues to be closed at mile marker 17.6 due to a major rockslide near the Ocoee 2 Dam. A portion of Little Frog Mountain slid into the roadway on November 10, 2009. The project to remove the rockslide debris and repair the roadway is underway and expected to take at least eight weeks.
 
Today: Due to rainy conditions, scaling operations were temporarily postponed today. Work will resume as soon as possible.
 
Weekend Update: This past weekend crews constructed an aggregate base pad for the 275 ton crawler crane on the west side of the slide and continued removing loose rock and debris from the slope. Crews also installed erosion and sediment control measures to prevent sediment from running off of the site.
 

U.S. 64 Rockslide Update - November 27

Friday, November 27, 2009 | 04:02 pm

CHATTANOOGA, Tenn. - Workers with rockslide removal contractor Charles Blalock and Sons on Friday, November 27 constructed an aggregate base pad for a 275 ton crawler crane on the west side of the rockslide while crews continued to remove loose rock and debris from the slope. The contractor also installed erosion and sediment control measures to prevent runoff at the site.

US-64 in Polk County continues to be closed at mile marker 17.6 due to a major rockslide near the Ocoee 2 Dam. A portion of Little Frog Mountain slid into the roadway on November 10, 2009. The project to remove the rockslide debris and repair the roadway is underway and expected to take at least eight weeks.

Polk County US-64 Rockslide Update For November 25

Wednesday, November 25, 2009 | 03:54 pm
Crew assemble 275 Ton Crawler Crane.
Crew assemble 275 Ton Crawler Crane.
Blasting Operations Continue
 
CHATTANOOGA, Tenn. – US-64 in Polk County continues to be closed at mile marker 17.6 due to a major rockslide near the Ocoee 2 Dam. A portion of Little Frog Mountain slid into the roadway on November 10, 2009. The project to remove the rockslide debris and repair the roadway is underway and expected to take at least eight weeks.
 

Polk County US-64 Rockslide Update For November 24

Tuesday, November 24, 2009 | 01:56 pm
Drilling Operations Continue in Preparation for Blast Tomorrow
 
CHATTANOOGA, Tenn. – Workers with Charles Blalock & Sons Construction continued assembly of the 275-ton crawler crane and the construction of a crane pad on the west end of the project as blasting crews began drilling an outcropping of large rock formations in preparation of spot blasting operations that are scheduled to take place tomorrow. The contractor also hauled in approximately 200 tons (ten truck loads) of aggregate on the east end of the project which will be spread across US-64 in a 2’ to 3’ thick blanket and serve as an energy dissipater for falling rocks. The blanket is intended to absorb the energy of the falling rock and reduce the distance which they would otherwise travel.

No Lane Closures on Tennessee Highways During the Thanksgiving Holiday

Monday, November 23, 2009 | 06:10 pm
Holiday motorists will have to detour around two major rockslides. This slide on U.S. 64 in Polk County, Tennessee is estimated to take eight weeks for removal. Another slide in North Carolina has closed Interstate 40 for several months.
Holiday motorists will have to detour around two major rockslides. This slide on U.S. 64 in Polk County, Tennessee is estimated to take eight weeks for removal. Another slide in North Carolina has closed Interstate 40 for several months.
Rockslide Detours Remain in Place for I-40 in North Carolina & U.S. 64 near Chattanooga
 
NASHVILLE –Thanksgiving travelers will enjoy a smooth drive through Tennessee during the busy travel holiday. The Tennessee Department of Transportation is once again halting all lane closure activity on interstates and state highways in anticipation of higher traffic volumes across the state.  
 
Construction crews will pack up their tool belts and all lane closures will be removed beginning at noon on Wednesday, November 25 until 6:00 a.m. Monday, November 30.
 

Polk County US-64 Rockslide Update For November 23

Monday, November 23, 2009 | 05:40 pm
A blast helps dislodge a large boulder at the top of Little Frog Mountain in Polk County.
A blast helps dislodge a large boulder at the top of Little Frog Mountain in Polk County.

CHATTANOOGA, Tenn. - Construction crews with Blalock & Sons and Dyno Nobel (blasting subcontractor) set off a series of explosive charges this morning to dislodge an outcrop of large boulders that were positioned immediately above the main slide area.  The boulders, ranging in size from 3’ to approximately 15’ in diameter, were dislodged with the blast and harmlessly fell down the slope to the roadway below.  Construction crews continued assembling the 275-ton crawler crane on the west side of the slide in preparation of scaling operations that are set to begin on the west side of the slide area this week, weather permitting.  The contractor plans to suspend work on Thursday for Thanksgiving Day but will resume work on Friday.

Video of the slide is available on the TDOT web site at http://www.tn.gov/tdot/US64rockslide/.