The show ran for five seasons on CBS, more of a popular hit (92% on the Tomatometer) than a critical one (66 metascore on Metacritic). It's now streaming on Amazon Prime.
Tudor City's bridge is the setting for a brief sequence in Season 2, Episode 6: "The High Road," starting at 7:32.
Then, with little preamble, he produces a wedding ring and proposes marriage.
In fact, he has an assignment in suburbia and needs a "wife," so it is a sham proposal!