| 1. | Move levers to activate traffic signals, navigation lights, and alarms. |
| 2. | Record names, types, and destinations of vessels passing through bridge openings or locks, and numbers of trains or vehicles crossing bridges. |
| 3. | Control machinery to open and close canal locks and dams, railroad or highway drawbridges, or horizontally or vertically adjustable bridges. |
| 4. | Direct movements of vessels in locks or bridge areas, using signals, telecommunication equipment, or loudspeakers. |
| 5. | Prepare accident reports. |
| 6. | Observe approaching vessels to determine size and speed, and listen for whistle signals indicating desire to pass. |
| 7. | Observe position and progress of vessels to ensure best utilization of lock spaces or bridge opening spaces. |
| 8. | Maintain and guard stations in bridges to check waterways for boat traffic. |
| 9. | Inspect canal and bridge equipment, and areas such as roadbeds for damage or defects, reporting problems to supervisors as necessary. |
| 10. | Clean and lubricate equipment, and make minor repairs and adjustments. |
| 11. | Log data such as water levels and weather conditions. |
| 12. | Write and submit maintenance work requisitions. |
| 13. | Perform maintenance duties such as sweeping, painting, and yard work to keep facilities clean and in order. |
| 14. | Check that bridges are clear of vehicles and pedestrians prior to opening. |
| 15. | Turn valves to increase or decrease water levels in locks. |
| 16. | Stop automobile and pedestrian traffic on bridges, and lower automobile gates prior to moving bridges. |
| 17. | Raise drawbridges and observe passage of water traffic, then lower drawbridges and raise automobile gates. |
| 18. | Operate lighthouses to assist marine passage near shores and dangerous waters. |
| 19. | Add and remove balance weights to bridge mechanisms as necessary. |
| 20. | Attach ropes or cable lines to bitts on lock decks or wharfs to secure vessels. |