Due to the severe storms there is a lot of flooding in this area. Roads are closed. If you want to get into Dumfries - suggest you use the back road to Locharbriggs which is usually OK.
Here is the link to the Tide Table where you can check when flooding is likely to be at its worst due to the incoming tide.
Here is the link to SEPA Flood alert where you can check areas where flooding is likely and can also find out what to do in the event of flooding in your area.There is much useful information on this site.