Caltrans will add more safety measures and warning signs on the Bay Bridge to try to get drivers to slow down before the new S-curve, where a speeding truck driver lost control early Monday and plunged in his big rig 200 feet to his death on Yerba Buena Island, authorities said.
New signs advising motorists of the 40 mph speed limit on the S-curve, reflective striping and radar boards flashing drivers’ speeds are among the changes in store in the aftermath of the crash, Caltrans spokesman Bart Ney said at a news conference Monday.
There have been at least 43 accidents in the curved area since it opened Sept. 8 as part of the eastern span replacement project, but the truck plunge was the first in which someone died.
The California Highway Patrol said the primary factors in the accident were the driver’s speed and the shifting weight of his cargo, not any problems with the S-curve’s design.
10 mph over limit
The crash happened about 3:30 a.m. as the big rig, loaded with pears, was traveling on the westbound upper deck at about 50 mph – 1o mph over the speed limit in that zone – said CHP Sgt. Trent Cross.
The truck tipped over the 3-foot-high concrete rail on the northern side of the S-curve and plummeted onto Yerba Buena Island, landing on its wheels and disintegrating into countless pieces. Security guards who were first on the scene said it was clear that the driver, a 56-year-old Hayward man whose name has not been released, died instantly.
The driver was an independent operator who bought the big rig several months ago, authorities said. For the past eight months, he had been a subcontractor for JM&R Trucking in Oakland.
“He was a good person, a prompt person, always on time,” said Mike Russell, the firm’s owner. “He was a safe driver, absolutely.”
Investigators suspect that the driver’s load of pears shifted as the rig hit the S-curve, something that could have helped propel the truck over the side of the span.
Weeks-long probe
Caltrans inspected the bridge and reopened the far-right lane to traffic at 7:45 a.m.
About 15 CHP investigators were collecting evidence on Yerba Buena for a probe that is expected to take weeks. Overhead, a mattress, apparently from the truck’s cab, could be seen balancing on the bridge railing.
Cross said CHP officials believe the S-curve is safe. “We don’t believe it’s a design flaw,” he said. “There’s nothing tricky or complicated about the curve. I can stand here with confidence and say that if you drive the posted speed limit, you will make it through the curve safely, just as thousands of drivers do every day.”
Cross said there was no video from security or traffic cameras on the bridge that captured the crash.
On Oct. 14, a Safeway big rig truck flopped across four lanes when it hit the S-curve, tying up westbound traffic for hours. The driver was unfamiliar with the new turn and was going too fast, the CHP said.
Tough adjustment
Some drivers have had difficulty adjusting to the 40 mph limit on the S-curve, a 10 mph decrease from the rest of the span. The increase in accidents and drivers’ complaints had already led Caltrans and the CHP to install new signs and flashing lights.
The CHP has ordered radar units, the electronic boards that flash the speed of an approaching car, but it is unclear when they will be installed.
Today, crews will begin adding 6-inch-wide reflective strips on the barriers on either side of the S-curve on both decks, Ney said.
At some point, crews also will install a large overhead sign warning westbound motorists of the 40-mph zone ahead, Ney said. That sign, which will be accompanied by flashing lights, will be placed near the top of the incline on the upper deck, Ney said.
Hours after the accident Monday, Caltrans began posting warnings on electronic message boards on Bay Bridge approaches warning truck drivers to slow to 35 mph at the curve, an advisory speed limit. The legal limit remains 40 mph.
Caltrans has considered installing “rumble strips” – rows of traffic dots extending across the roadway – in the area of the S-curve, but has no immediate plans to do so, Ney said.
Steps taken
The agency has already made several changes in hopes of getting drivers to slow down. Last week, crews painted solid white lines to discourage lane changes and added raised pavement markers – some traffic dots and some reflectors – to jar drivers moving to one side or the other. It also added a large overhead warning sign on the eastbound approach to the S-curve.
The CHP said the majority of S-curve crashes have been fender benders. The crashes have been split relatively evenly between the upper and lower decks and have occurred mostly during noncommute hours, when traffic typically moves faster, officials said.
“From day one since we had this S-curve open, we’ve tried to instill in the motoring public that you really have to watch your speed in this area,” Cross said. “Speed has always been a factor in every traffic collision that has occurred in this S-curve.”
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