“Death Trap” Chutes Removed from I-85 Work Zone in S.C.
Five miles of concrete barriers that created one-lane chutes on the I-85 widening project in Cherokee County, South Carolina, have been removed after being blamed for a deadly crash in the work zone. The remaining five miles of chutes are expected to be removed by the end of the year.
The local coroner called the 10-mile section of one-lane chutes a “death trap” after three people were killed July 15 in an eight-vehicle crash. A tractor trailer had rear-ended the vehicles in one of the two southbound chutes near Gaffney. The semi was traveling in the passenger-car only chute instead of the one designated for truck traffic.
After the crash, the S.C. Department of Transportation met with the contractor to remove the chutes between mile markers 81 and 91. The speed limit was dropped from 55 to 45 mph in the area and down to 35 mph in the chutes.
The State Transport Police and S.C. Highway Patrol stepped up traffic enforcement in the area. The DOT discussed options with national work zone experts, which recommended improved signs for truck restrictions in the work zone.
“This project has been plagued by crashes throughout the work zone, including crashes like this one that involved tractor trailers that were traveling in lanes designated for passenger vehicles only,” SCDOT said after the incident.
The first section of chutes, between markers 81 and 86, were removed by September 15. The contractor is tasked with removing the chutes from markers 86 and 91 next. The SCDOT says 90 days of prep work is needed before the second five-mile section of chutes can be eliminated. It expects the removal to be finished before the end of the year.
The entire $830 million project involves widening and rehabilitating 29 miles of I-85 through Cherokee and Spartanburg counties between mile marker 77 and the N.C. state line. SCDOT commended the contractor, a joint venture of Blythe Construction and Zachry Construction, on removing the first chutes ahead of expectations.
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Cat Electrifies Its Largest Dozer, the D11 XE
Fewer moving parts generally mean lower maintenance costs and longer life. Combine that with the power efficiency of electric drive on a D11 size dozer moving hundreds of tons of material a day, now you’re talking real savings.
That’s the program Caterpillar is developing behind its newest dozer, the D11 XE shown at MINExpo this year. The D11 XE is currently operating at Caterpillar’s dozer proving grounds in Peoria, Illinois, and will complete an extensive field validation plan before entering full production.
According to the company, it delivers the lowest cost per bank cubic meter in dozing operations and 25% better fuel efficiency. As for maintenance, the electric-drive technology results in a 20% increase in time between engine rebuilds, while 60% fewer moving parts translates to more machine uptime.
Tapping into Cat’s 20 years of experience with electric drives, the D11 XE dozer’s system delivers constant power to the ground, continuous pushing and greater maneuverability for faster cycle times and improved fuel efficiency.
Although the D11 XE is a new design, the machine shares some components with Cat’s mechanical-drive models. That similarity means mechanics are already familiar with many of the dozer’s systems, and owners have fewer parts to stock.
The new dozer’s modular design simplifies maintenance through improved serviceability of the powertrain. Fewer moving parts alsomean less wrenching required to maintain the dozer and lower service costs.
Also new with this dozer is the integration of powertrain, electronics and software controls which facilitate the use of Cat technologies such as MineStar Command for dozing with remote control or semi-autonomously.
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