The creek and pond are considered a red penalty areas. Your options for relief are found How to take Relief from a Red Penalty Area under the Rules of Play section of the website. The bridge is considered to be in the yellow penalty area.
Balls touching the metal edging along the creek are considered to be in the penalty area.
If the ball is not touching the metal edging then swing relief is provided for the metal edging and metal rods connected to the metal edging that may be exposed above ground.