Work could start a few months later than expected on an $8.7 million effort to replace the 55-year-old Clarks Bridge on Ga. 284/Clarks Bridge Road at Lake Lanier. The project had been expected to start this spring or summer, but the contractor, E.R. Snell Contractor of Snellville, is going to wait to start on the project until September, said Teri Pope, Georgia Department of Transportation district spokeswoman. She offered no further explanation, but said the DOT “holds the contractor to the contract completion date not a start date.”