উত্তর সিলেক্ট করলে সঠিক ও ভুল দেখাবে।
ব্যাখ্যা ও সঠিক সমাধান
উত্তর:
6.15
Padma Multipurpose Bridge is considered to be the most challenging construction project in the history of Bangladesh.
The two - level steel truss bridge carries a four - lane highway on the upper level and a single track railway on a lower level.
The bridge with 150.12 m (492.5 ft) long 41 spans, 6.150 km (3.821 mi) total length and 22.5 m (74 ft) width, is the longest bridge in Bangladesh, and the longest over Ganges in terms of both span and the total length.