Heavy metal plates fell from a lorry at the entrace of Nicoll Highway heading towards the Kalland-Paya Lebar Expressway (KPE) on 24 October, according to The Straits Times.
As a result, the tunnel was closed from about 5pm and the road was damaged, resulting in a massive traffic jam outside the KPE tunnel entrance.
The Land Transport Authority (LTA) shared a Twitter update on 24 October at about 4.52pm saying that there was an obstacle at the Nicoll Highway entrance.
A high jam was seen outside the tunnel with lines of vehicles being seen waiting, resulting in a huge congestion in the area.
Some vehicles were also seen trying to turn out from the area by traveling in the opposite direction as a result of the huge jam.
At about 12.12am on 25 October, LTA updated via Twitter than the road works at the tunnel entrance had been finished and reopened to the public.
Nobody was injured in the incident.
@zaobaosg 朝往淡滨尼快速公路（TPE）的加冷—巴耶利峇快速公路（KPE），在尼诰大道（Nicoll Highway）的入口处出现障碍物，导致入口处暂时关闭。#zaobaosg #sgnews #sgincident #tpe #kpe #sgroad #马路 #关闭 #交通 #阻塞 ♬ original sound – zaobaosg