identify "to the beach" as a prepositional phrase, participial phrase, or infinitive phrase. Does the phrase function as a noun, or adverb?

The road to the beach is always crowded during the summer.

no, it is an adjective, modifying "road"

You are correct, "to the beach" is a prepositional phrase that functions as an adjective modifying "road". Thank you for the correction.

"To the beach" in the given sentence is a prepositional phrase. It functions as an adverb, modifying the verb "is crowded."

To identify it as a prepositional phrase, we look for a preposition, which in this case is "to." The object of the preposition is "the beach." Since it modifies the verb and answers the question "where," it functions as an adverbial phrase.

"To the beach" is a prepositional phrase. It functions as an adverb modifying the verb "is crowded."