ijeongpyoe uri mokjeokjiga jeokhyeo isseo.

이정표 means a signpost, road sign, or direction sign. It is the thing that shows directions or place names.

So in this sentence, 이정표에 means on the signpost or on the road sign.

Here, 에 marks the location where something is written.

So:

• 이정표에 = on the signpost
• 벽에 적혀 있어 = it is written on the wall
• 종이에 적혀 있어 = it is written on the paper

Even though English often uses on, Korean commonly uses 에 for the place where something exists or appears.

Because 목적지 is the thing that is in the state of being written, so it is the subject of 적혀 있어.

Breakdown:

• 우리 목적지 = our destination
• -가 = subject marker
• 적혀 있어 = is written

So the structure is basically:

• Our destination
  • is written
    • on the signpost

If you used 목적지를, it would sound like someone writes our destination, which is a different structure.

이/가 often marks the specific thing being identified or newly noticed.

Here, the sentence is pointing out what is written on the sign:

• 이정표에 우리 목적지가 적혀 있어. = Our destination is written on the signpost.

Using 가 sounds natural because the speaker is focusing on our destination as the thing that appears there.

If you said:

• 우리 목적지는 이정표에 적혀 있어.

that would also be possible, but it puts more topic focus on our destination, as if you are talking about it generally and then saying where it is written.

적혀 있어 comes from 적히다 + -어 있다.

• 적히다 = to be written down, to get written
• -어 있다 = shows a resulting state that continues

So 적혀 있어 literally means something like:

• has been written and remains that way
• is written

This is why it is very natural for signs, labels, notes, and posted information.

This is a very common learner question.

• 적다 = to write
• 적히다 = to be written

Compare:

• 누가 주소를 적었어.
  = Someone wrote the address.

• 주소가 적혀 있어.
  = The address is written down.

In your sentence, the important idea is not who wrote it, but the fact that it is written there, so 적히다 is the natural choice.

-어 있다 describes the current state resulting from a completed action.

Examples:

• 문이 열려 있어. = The door is open.
• 창문이 닫혀 있어. = The window is closed.
• 이름이 적혀 있어. = The name is written.

So 적혀 있어 does not mean someone is actively writing it right now. It means the writing is already there.

They are very similar, and both can mean is written.

• 적혀 있어 often feels natural for something that is written down / listed / noted
• 쓰여 있어 also means is written, and is very common too

In many everyday situations, both are possible:

• 이름이 적혀 있어
• 이름이 쓰여 있어

Both can mean The name is written there.

That said, 적혀 있어 often gives a feeling of something being written down as information, which fits signs very well.

우리 means our, and it is the normal everyday form.

저희 is the humble version, used when lowering yourself in relation to the listener. For example, it is common in polite service situations or formal speech.

So:

• 우리 목적지 = neutral, normal everyday speech
• 저희 목적지 = more humble/polite

In a casual sentence like this one, 우리 목적지 sounds completely natural.

Yes. 적혀 있어 is a casual/plain conversational form.

Compare:

• 이정표에 우리 목적지가 적혀 있어.
  casual speech

• 이정표에 우리 목적지가 적혀 있어요.
  polite everyday speech

• 이정표에 우리 목적지가 적혀 있습니다.
  more formal speech

So the sentence as written would be natural between friends, family, or in relaxed conversation.

The Korean order is:

• 이정표에 = on the signpost
• 우리 목적지가 = our destination
• 적혀 있어 = is written

A very close structural translation is:

• On the signpost, our destination is written.

More natural English would usually be:

• Our destination is written on the signpost.
• Our destination is on the signpost.

So Korean often places the location first, but English usually sounds more natural with the subject first.

It is pronounced roughly like 저켜 in actual speech.

Why? Because:

• 적히다 → 적혀
• The ㅎ affects the sound, so 적혀 is pronounced more like 저켜

So:

• 적혀 있어 sounds approximately like 저켜 이써

You do not need to overthink the spelling change at first, but it is good to know that the pronunciation is not exactly the same as the written form.

In standard Korean, 써 있어 is generally not the natural form for this meaning.

Learners sometimes think:

• 쓰다 = to write
• so maybe 써 있어 = is written

But for the meaning is written, Korean usually uses:

• 쓰여 있어
• 적혀 있어

So the natural options are:

• 이정표에 우리 목적지가 적혀 있어.
• 이정표에 우리 목적지가 쓰여 있어.

Not usually:

• 이정표에 우리 목적지가 써 있어.

Yes, very much.

Because -가 적혀 있어 often sounds like the speaker has noticed something written somewhere, this sentence can naturally carry a feeling like:

• Look, our destination is written on the sign.
• Hey, our destination is on the signpost.

So it is not just a dry statement of fact; in context, it can sound like the speaker is pointing something out.