This truck tipped over into the bike lane last year at the Highway 17/Highway 91 Connector intersection.

No easy fix for SFPR’s rollover prone intersection

Highway 17 review finds adding interchange now very costly, recommends more steps to slow heavy trucks



Rebuilding a rollover-prone intersection on the South Fraser Perimeter Road in Delta with an overpass would be a costly last resort only if other options fail to improve traffic safety there, according to an independent review released by the transportation ministry.

Delta Police last year flagged the Highway 17 intersection with Highway 91 Connector as a hazard, describing the downhill grade and banked curve as a tricky “twist” that may have contributed to five rollover truck accidents there in 2014.

The province commissioned a design review by consultants R. F. Binnie and Associates, who found there’s little that can be easily done to reduce the probability of crashes besides getting trucks to slow down.

Because of the design, it said, trucks coming downhill on Highway 17 to turn left onto the connector risk overturning if they’re going more than 26 kilometres an hour.

“The ultimate long term solution would be to replace the intersection with a grade-separated facility,” the report says. “This is a very costly solution and construction of an interchange would only be considered if the preceding recommendations are not effective.”

The transportation ministry already put up signs warning of the truck rollover risk and posted a 20 km/h advisory speed limit on two of the intersection approaches. No more trucks have rolled since that signage went up last fall.

That could be supplemented if necessary with electronic or flashing speed warning signs, the report said.

The review found the design of the intersection is “generally compliant” with established engineering guidelines, although the four per cent grade is steeper than the maximum desirable grade of three per cent.

Excessive speed is the main factor in truck rollovers, it said, particularly as trucks turn from the 80-kilometre-an-hour SFPR (Highway 17) to the 60-kilometre-an-hour Highway 91 Connector.

Delta Police Acting Sgt. Sarah Swallow said slowing to 20 km/h to make the turn safely is a challenge for truckers approaching the intersection on a green light.

“Slow down and then slow down some more,” she advised, adding trucks’ loads can shift and cause them to flip if a driver brakes too fast.

The $1.26-billion South Fraser Perimeter Road was opened in 2012 as Highway 17.

The Highway 91 Connector intersection is one of three intersections that the province opted to build on the SFPR with traffic lights rather than on- and off-ramps as a cost-saving measure, despite predictions that making trucks stop at red lights would slow traffic on the route.

“It’s too bad that interchange was not built when the road was built,” Delta Mayor Lois Jackson said. “It will have to be done eventually. It’s just a question of when.”

 

Intersection of South Fraser Perimeter Road and Highway 91 Connector. Evan Seal / Surrey Leader

Just Posted

Heritage Surrey launches time-lapse mapping tool

It matches local historical images to modern-day locations

UPDATE: Delta man charged in stabbing of woman, off-duty cop outside North Delta elementary school

Manoj George, 49, is facing two counts of aggravated assault and two counts of assault with a weapon after the incident on Wednesday, Feb. 20.

Surrey RCMP asks for public’s help finding missing 52-year-old

Police say William Michaels last seen on Feb. 19

Private school for hockey players pitched for Surrey’s Excellent Ice arena

Lark Group draws up expansion plan for facility built and operated by the Surrey company since 1999

From a drunk judge to Clifford Olson: George Garrett recounts a life in B.C. news radio

New book from ‘Intrepid Reporter’ George Garrett offers readers a glimpse behind the headlines

Sell regulated heroin to curb B.C.’s overdose problem: report

B.C. Centre on Substance Use points to organized crime and money-laundering as contributing factors

Galchenyuk scores in OT as Coyotes edge Canucks 3-2

Vancouver manages single point as NHL playoff chase continues

B.C. legislature moving suspended staff controversy to outside review

Whale watching, Seattle Mariners trips billed as emergency preparedness, Speaker Darryl Plecas says

Two boys saved after falling through ice in Coquitlam

RCMP say a Good Samaritan pulled the kids to safety

More people signing up for compulsory vaccines

Maple Ridge mom says public tired of hearing about measles

Why do zebras have stripes? Perhaps to dazzle away flies

Researchers from University of Bristol look into why zebras have stripes

Poll: More voters believe Canada doing worse under Trudeau government

22 per cent believed the country is doing better and 27 per cent said things are the same

HBC shuttering Home Outfitters across Canada

North America’s oldest retailer is revamping its various stores to improve profitability

BC SPCA investigates Okanagan woman with prior animal abuse convictions

BC SPCA is investigating a property near Vernon

Most Read