The construction of too many bridges may prevent large oceangoing ships from sailing directly to inland cities along the river. |
This means one bridge in less than 30 kilometers (19 miles) across the nearly 3,000-kilometer-long trunk of the river. |
This means one bridge in less than 30 km across the nearly 3, 000-km-long trunk of the river by that time. |
This means one bridge in less than 30 km across the nearly 3,000-km-long trunk of the river by that time. |