It's a pity you won't be here to see the first practical use of this bridge we have built.

4 seconds sound clip from the The Bridge on the River Kwai movie soundboard.

You can hear this line at 02:18:42.490 in the Blu-ray version of the movie.

Quote context

[...]

- Lovely.

- Nothing else would matter in the world today, we could go on loving in the same old way. A Garden of Eden Just made for two...

(MEN WHISTLING AND APPLAUDING)

- I'm sure I speak for all of us when I say this has been a most enjoyable evening.

- As you know, most of you move on tomorrow to a new camp and new construction.

- It's a pity you won't be here to see the first practical use of this bridge we have built.

- However, you'll be glad to know that the completion of this link in the railway will enable us to transport the sick and the disabled to the new camp by train.

- Colonel Saito has kindly permitted me to stay behind with Major Clipton and the sick men, and we'll rejoin you in a few days' time.

- Now that your work here is finished I suppose many of you feel somewhat letdown.

- That's quite understandable. It's a very natural reaction.

[...]