A lane of Angle Street in Hamilton, closed since April after a retaining wall collapsed, will not reopen until October, a Public Works spokesman has advised.Traffic was reduced to one lane between Cedar Avenue and Brunswick Street after the wall toppled in the grounds of nearby Dellwood Middle School.The area of the collapse was cordoned off from students, and the eastbound lane of the adjoining street closed off for safety reasons.The spokesman said the job would get under way “shortly”, and was expected to be done by the school’s mid-October break.Proposals to shore up the road were approved last week by the Department of Planning, he said, and the repair costs are to be split between Government and the Corporation of Hamilton.