По вечерам мы часто идём через мостик, потому что там тише, чем у дороги.

По вечерам means in the evenings or in the evening time, regularly.

This is a very common Russian pattern:

• по + dative plural for repeated times
• for example:
  • по утрам = in the mornings
  • по ночам = at night / at nights
  • по выходным = on weekends

So вечерам is the dative plural of вечер. The whole phrase suggests a habitual time: not one specific evening, but evenings in general.

This is a very common learner question.

In basic explanations:

• идти = to go on foot in one direction, at a particular time
• ходить = to go on foot habitually, repeatedly, or in different directions

So a learner might expect мы часто ходим.

Why, then, мы часто идём?

Because Russian can use идти even with repeated actions when the speaker imagines each occasion as a concrete trip: we are going that way, again and again, as a typical route. It can feel more vivid and more tied to the actual path.

So:

• мы часто идём через мостик = we often go across the little bridge / we often take the little bridge
• мы часто ходим через мостик would also be natural, but it sounds a bit more like a general habit or repeated fact

In other words, идём here presents the repeated action as a series of actual one-way walks.

Мостик is in the accusative singular because it follows через.

The preposition через usually means across, through, or over, and it takes the accusative case:

• через мост = across the bridge
• через парк = through the park
• через дорогу = across the road

Here:

• мостик is masculine singular
• it is inanimate
• for masculine inanimate nouns, the accusative form is the same as the nominative

So:

• nominative: мостик
• accusative: мостик

That is why the form does not change visibly.

Yes. Мостик is a diminutive form of мост.

• мост = bridge
• мостик = little bridge, small bridge, footbridge

Diminutives in Russian can suggest:

• small size
• familiarity
• affection
• a more everyday, natural tone

Here мостик probably suggests a small bridge or footbridge rather than a large bridge.

Yes. Потому что means because, and it is one of the most normal and common ways to introduce a reason.

So:

• ..., потому что там тише ... = ..., because it is quieter there ...

It introduces the explanation for why they go that way.

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

So:

• там тише literally looks like there quieter
• but it means it is quieter there

This is completely normal Russian.

Compare:

• Он дома. = He is at home.
• Здесь тепло. = It is warm here.
• Там тише. = It is quieter there.

Russian does not need a present-tense is in these sentences.

Тише is the comparative form of тихий or тихо.

It means:

• quieter
• more quietly

Russian often uses short comparative forms like this instead of a longer more + adjective/adverb structure.

Examples:

• быстрый / быстро → быстрее = faster
• тихий / тихо → тише = quieter
• громкий / громко → громче = louder

In this sentence, там тише means it is quieter there.

Чем is the standard word for than in comparisons.

The pattern is:

• X + comparative + чем + Y

So here:

• там тише, чем у дороги
• literally: there [is] quieter than by the road

That means:

• it’s quieter there than near the road
• or more naturally: it’s quieter there than it is by the road

So чем connects the two things being compared.

Yes, exactly. У means by, near, or at, depending on context.

Here у дороги means:

• by the road
• near the road
• next to the road

After у, Russian uses the genitive case.

So:

• дорога = road
• дороги = genitive singular

That is why it is у дороги, not у дорога.

Yes. Those would also be possible.

• у дороги = by the road / near the road
• около дороги = near the road
• возле дороги = near the road / beside the road

In this sentence, у дороги is short, natural, and very common. It sounds idiomatic and everyday.

Yes, Russian word order is flexible.

This order is natural because it starts with the time frame:

• По вечерам = in the evenings

Then it gives the subject and action:

• мы часто идём через мостик

So the sentence first sets the scene, then tells you what happens.

Other orders are possible, for example:

• Мы часто по вечерам идём через мостик...
• Через мостик мы часто идём по вечерам...

But the original version sounds very normal and clear. Starting with По вечерам emphasizes when this usually happens.

Here it means across the bridge or over the little bridge.

The preposition через can mean different things depending on context:

• через парк = through the park
• через реку = across the river
• через мостик = across/over the little bridge

So in this sentence, the idea is that they use the bridge as part of their route.