The state Department of Transportation has scheduled temporary gate closures on the Route 30 drawbridge today and tomorrow.Each closure is expected to take five to 10 minutes and should not exceed 15 minutes, the DOT said Sunday in a news release. The closures will occur on the hour between 9 a.m. and 2 p.m.Motorists are advised to reduce speed, exercise caution and anticipate potential delays in the work area. The schedule may be adjusted based on weather or other circumstances.