RALEIGH — The city is closing a bridge on Lake Dam Road in Southwest Raleigh because two beams on the 48-year-old structure are showing signs of failure.
The bridge over Walnut Creek, just below the Lake Johnson dam, was to be closed indefinitely starting at the end of the day Wednesday, the city announced. An engineering firm inspected the bridge Monday and recommended to the city that it be closed because of wear to two beams in one span of the bridge, said Christopher McGee, manager of Transportation Field Services.
“Chunks of concrete had fallen out onto the ground,” McGee said. “Rebar has rusted in two.”
The bridge is not in danger of collapsing, McGee said, but the failure of the beams could produce a good-sized hole in the middle of the pavement.
The concrete deck bridge was built in 1966. City workers knew that it needed some repair but weren’t aware of the problem with the beams until Monday’s routine inspection, which is done every other year, McGee said.
The city plans to repair the bridge, but it could be closed for several months, McGee said. The bridge is scheduled to be replaced in three or four years, he said.
Lake Dam Road, which connects Avent Ferry and Tryon roads, will remain open on either side of the bridge. The parallel pedestrian bridge and nearby parking for a greenway trail also will remain open.