A popular belief is that the bridge is long enough for a person to recite the entire Philippine National Anthem while traversing.

The meager amount was augmented in several appropriations embodied in different Republic Acts through the initiative of Cagayan's 2nd District Congressman Benjamin Ligot.

[1] The construction was based from the original plan of ten 240-foot (73 m) steel through truss spans and one 50-foot (15 m) I-beam approach on each end.

The frequent floods have widened the river channel and caused the change of plan for the bridge to 14 240-foot (73 m) Japanese steel through truss spans and one 50-foot (15 m) I-beam approach on the Solana side.

President Ferdinand Marcos ordered Public Works, Transportation and Communications Secretary Antonio Raquiza to assign the bureau's construction team led by Engineer Rogelio Talastas to Buntun Bridge.