The engineer aims to design a box girder for a bridge according to the following conditions/considerations:

The bridge will overpass a river of 120 ft width (bridges piers shall not be in contact with water)
The bridge shall bear 4 lanes roadway (2 lanes in each direction)
Two sidewalks are requested
A 10 inches partition at the middle to be provided to separate the opposing dimensions (0.4k/ft), and 2 barriers at the ends ( 0.35k/ft)
F’c=4ksi

Make the full design of the girder box and sketch your design.
Any missing data could be assumed.