Строительная площадка закрыта.

In Russian, the verb to be is usually omitted in the present tense.

So:

• Строительная площадка закрыта. = The construction site is closed.

Russian does not normally say a separate word for is here.

But in the past or future, forms of to be do appear:

• Строительная площадка была закрыта. = The construction site was closed.
• Строительная площадка будет закрыта. = The construction site will be closed.

Because it agrees with площадка, which is a feminine singular noun.

• площадка = feminine singular
• so the predicative form becomes закрыта = feminine singular

Compare:

• магазин закрыт = the shop is closed (masculine)
• дверь закрыта = the door is closed (feminine)
• окно закрыто = the window is closed (neuter)
• двери закрыты = the doors are closed (plural)

So the ending changes to match the noun.

Закрыта is the short form, used when describing the current state of something in sentences like X is closed.

• Площадка закрыта. = The site is closed.

Закрытая is the full form, usually used before a noun:

• закрытая площадка = a closed site / a site that is closed

So:

• Строительная площадка закрыта. = normal sentence
• закрытая строительная площадка = noun phrase

This short-form pattern is very common in Russian:

• Дверь открыта. = The door is open.
• Музей закрыт. = The museum is closed.

For a learner, the most useful way to think about it is this: in this sentence, закрыта functions like a short-form adjective/predicative form meaning closed.

Historically and grammatically, forms like закрыт / закрыта / закрыто / закрыты are connected with the past passive participle of закрыть (to close). But in everyday learning, it is often easiest to treat them as state words:

• магазин закрыт = the store is closed
• дверь закрыта = the door is closed

So yes, there is participial background here, but in practical use it behaves much like closed in The door is closed.

It is in the nominative case.

Why?

Because it is the subject of the sentence:

• Строительная площадка = the construction site
• закрыта = is closed

You can also see the nominative agreement in строительная:

• feminine singular nominative adjective ending: -ая
• feminine singular nominative noun: площадка

Строительная is an adjective meaning construction-related or building-related. It agrees with площадка in gender, number, and case.

The base noun is:

• строительство = construction

From that comes the adjective:

• строительный = construction-, building-, used for construction

Since площадка is feminine, the form becomes:

• строительная площадка

This whole phrase means construction site.

Word by word, it is something like:

• строительная = construction
• площадка = site / area / platform / grounds

But the natural meaning of the full phrase is construction site.

No. Площадка is a flexible word and can mean things like:

• small площадка / area
• platform
• court
• playground
• site

Its exact meaning depends heavily on context.

For example:

• детская площадка = playground
• спортивная площадка = sports ground / court
• строительная площадка = construction site

So in this sentence, you should learn строительная площадка as a set phrase meaning construction site.

Yes. Стройплощадка is a very common shortened form of строительная площадка.

So both can mean construction site:

• строительная площадка = full, standard form
• стройплощадка = shorter, very common in everyday use

The full version may sound a bit more formal or neutral; the shortened version is very natural in speech and writing too.

The normal order inside the noun phrase is:

• строительная площадка

That is, the adjective usually comes before the noun.

The sentence word order can sometimes change for emphasis:

• Строительная площадка закрыта. = neutral
• Закрыта строительная площадка. = marked/emphatic, less neutral in isolation

For a basic statement, Строительная площадка закрыта is the most natural order.

The stress is:

• строи́тельная площа́дка закры́та

A rough pronunciation guide:

• строи́тельная = stra-EE-tyel-na-ya
• площа́дка = pla-SHCHAT-ka
• закры́та = za-kry-TA

A few useful points:

• щ in площадка sounds like a soft long shch sound
• ы in закрыта is a Russian vowel with no exact English equivalent
• unstressed о is often pronounced more like a

You would say:

• Строительная площадка не закрыта.

Here не simply goes before закрыта.

If you want to say The construction site is closed, you say:

• Строительная площадка закрыта.

If you want a stronger contrast, Russian can also rely on intonation or extra words depending on context.

Great question. They are not the same.

• закрыта describes a state/result: it is closed
• закрывается describes a process or repeated action: it is closing / closes

Compare:

• Строительная площадка закрыта. = The construction site is closed.
• Строительная площадка закрывается в 6 часов. = The construction site closes at 6 o’clock.
• Площадку закрывают. = They are closing the site.

So закрыта focuses on the condition, not the action.

Yes, potentially. Закрыта itself just means closed, and the exact nuance depends on context.

It could mean:

• access is not allowed right now
• the site is shut for safety reasons
• the area is closed off
• work has stopped and entry is forbidden

Russian does not automatically specify whether the closure is temporary or permanent. Context does that.

Yes, if the context already makes it clear which площадка you mean.

• Площадка закрыта. = The site/ground/playground/platform is closed.

But without context, площадка is too general, so the meaning may be unclear. Adding строительная makes it specifically the construction site.

So:

• Строительная площадка закрыта. = clear and specific
• Площадка закрыта. = possible, but context-dependent