Tonight and Wednesday night, drivers approaching the northbound South Grand Island Bridge may experience something that daytime motorists encounter all too often – a delay.

The State Thruway Authority reports that northbound traffic will be stopped for about 10 minutes at a time while crews replace the overhead lane signals on the bridge between 11:30 p.m. and 3:30 a.m.

Motorists will be halted at the toll plaza until lanes on the bridge can be reopened. The work began Monday night. If weather is bad, further work may be postponed.