The Pratt Road bridge over the Tonawanda Creek will be closed for repairs starting tomorrow, according to County Highway Superintendent Tim Hens.
The closure is expected to last a week.
Two steel girders will be reinforced.
The repairs will enable the county to remove a load restriction placed on the bridge following inspections this summer.
The $10,000 expenditure comes from the 2010 Bridge Capital Improvement Project, which is funded with state highway aid.