
By 4am Tuesday, the left and middle lanes on both sides of the road in front of The Mall Ngam Wong Wan were under 30 to 50 centimetres of water.
Motorists had to use the right lane on both sides.
Muang Nonthaburi Municipality officials set up water pumps to drain the floodwaters.
At 7.25 am, the road was still partially flooded on the left lane on both sides.
The road and connecting roads of Phra Nangklao, Ratanatibet, Kaerai, Tiwanon and Pak Kret saw heavy congestion during Tuesday's rush hour.