🔍 Key Concepts

• How special features like cables, ferries, or utilities are shown on U.S. inland river charts • The chart symbols and shading used for overhead vs underwater crossings • How the chart differentiates fixed structures (like bridges) from other types of crossings

💭 Think About

• Ask yourself: Are these shaded areas showing something over the river, under the river, or moving across the river? • Think about what kind of river feature would need a wide, band-like shaded area extending from bank to bank instead of just a small symbol. • Consider which of the options usually has clear vertical clearance information or height notes associated with it on the chart.

✅ Before You Answer

• Look for any nearby elevations/clearance notes next to the shaded areas (e.g., heights above the water). • Check if there are any structures drawn on the banks (like terminals, landings, or towers) that line up with the shaded bands. • Verify whether the chart uses a distinct symbol or line style for bridges in other parts of the river so you can compare it to these shaded areas.