The full desert road closure will be 36 hours from 7am on Wednesday (7th March) until 7pm on Thursday and another 36-hour closure is schedule for April 4-5.
The bridge was damaged by a truck crash in July 2017 and has been one lane since February.
The alternative route is State Highways 46, 47, 4, and 49. This detour is not suitable for vehicles over 44 tonnes, apart from 50MAX vehicle, which is permitted.
There are also multiple maintenance worksites on the Desert Road during this period and delays are possible at those.
Vehicles can use the SH3 and SH3A route between Hamilton and Bulls if preferred.
Vehicles with overweight loads or loads wider than 3 metres are unable to use the Desert Road section of SH1 until the bridge repairs are complete in April.
Drivers can call 0800 4 HIGHWAYS to check on road conditions before they travel.