He said he was surprised to learn that Deputy Works Minister Datuk Rosnah Shirlin had criticised them over the RM170 million allocation last year and RM400 million this year to improve the State's infrastructures.
Rosnah had on March 6 said the federal allocation was proof enough the opposition claim was not true.
"As a matter-of-fact, many are still wondering that despite the large allocation for an interior division like Tenom, many roads remain not repaired," he said.
These include several roads in Kemabong like Kelorok, Sumambu that have not been maintained over the past years, he said.
Masdin, meanwhile, lauded the effort of PBS Kemabong Assemblyman Datuk Rubin Balang who had secured RM96 million to improve and upgrade the rural roads in Rundum, but regretted the project was late in its execution.