Bosphorus Bridge

Building Suspension bridge linking Istanbul's European and Asian sides

Suspension bridge spanning the Bosporus, linking Istanbul’s European and Asian shores. Tourists photograph the crossing, take Bosporus cruises beneath it and explore waterfront neighbourhoods like Ortaköy.

Main image

The Bosphorus Bridge is a major suspension bridge in Istanbul that connects the European and Asian sides of the city across the Bosphorus Strait. It was the first fixed road crossing of the strait when it opened in 1973 and is a key part of Istanbul’s motorway network.

The bridge carries multi-lane highway traffic and is noted for its long central span of 1,074 m between the two main towers. It functions as a vital urban transport link and is visible from many points along the Bosphorus shoreline.

Construction and opening in 1973 provided the first direct road connection between Istanbul’s continents, transforming traffic and development patterns. The structure has since been one of several crossings and has been officially renamed the 15 July Martyrs Bridge.

The bridge sits across the narrow waterway between the neighborhoods of Ortaköy on the European shore and Beylerbeyi on the Asian shore, and it is easily visible from both waterfronts and from boat routes on the Bosphorus.

  • Opening year and name: Opened in 1973 as the first road bridge linking Europe and Asia across the Bosphorus and later renamed the 15 July Martyrs Bridge.
  • Main span length: The central suspension span measures 1,074 m, making it one of the long-span suspension bridges constructed in the 20th century.

What to See #

  • Main span: The main suspension span that carries the motorway between the European and Asian sides of Istanbul and measures 1,074 m between towers.
  • Deck and approaches: The road deck and anchorage structures that form part of the city's O-1 motorway crossing the Bosphorus Strait.
  • Nearby viewpoints: Viewpoints on the nearby shores such as Ortaköy on the European side and Beylerbeyi on the Asian side that are commonly used for photos of the bridge.
Bosphorus Bridge
Bosphorus crossing between the European and Asian sides of Istanbul (commonly called the 15 July Martyrs Bridge / Bosphorus Bridge)
41.0456, 29.0340
Free to cross by road as part of public motorway; pedestrian access is generally restricted

How to Get to Bosphorus Bridge #

The Bosphorus (15 July Martyrs) Bridge is crossed by the O-1 motorway (the inner Istanbul beltway). By car, follow the O-1 from central Istanbul (Beşiktaş/Ortaköy on the European side or Üsküdar/Beylerbeyi on the Asian side); Taksim to the bridge area is roughly 6-10 km depending on route. Pedestrian crossing is not permitted; to view the bridge on foot go to nearby Ortaköy (short taxi or local bus from Taksim) or to viewpoints in Beylerbeyi.

Public transit does not run across the bridge itself; instead use metro or Marmaray to reach transfer points and then a short taxi or bus ride to bridge viewpoints. For example, take the M2 metro to Taksim/Gayrettepe and connect by taxi to Ortaköy, or use Marmaray to Üsküdar and taxi to Beylerbeyi.

Tips for Visiting Bosphorus Bridge #

  • Visit around sunrise or shortly after (or at dusk) and view the bridge from the shore in Ortaköy, Beşiktaş or Üsküdar - those vantage points and the regular Bosphorus ferries give the best unobstructed photo angles.
  • Do not plan to walk the bridge: the 15 July Martyrs Bridge (formerly Bosphorus Bridge) has no public pedestrian access; take a Şehir Hatları or private Bosphorus cruise to get close views instead.
  • Avoid weekday rush hours (roughly 07:00-09:00 and 17:00-19:00) when traffic and noise are worst; mid-morning or late evening ferry runs are calmer and give clearer photographic conditions.

Best Time to Visit Bosphorus Bridge #

Best visited in spring or autumn for mild weather, fewer crowds, and good conditions for walks or boat trips along the strait.

Spring
Apr - Jun · 10 - 22 °C
Pleasant weather and blooming parks make spring one of the best times to walk or take a cruise on the Bosphorus; breezes can be cool on the water.
Summer
Jul - Aug · 22 - 30 °C
Hot and humid, with long daylight hours - popular with tourists, so expect larger crowds on viewpoints and ferries.
Autumn
Sep - Oct · 15 - 24 °C
Mild, comfortable conditions and fewer tourists than summer, ideal for sightseeing along the strait.

Weather & Climate near Bosphorus Bridge #

Climate

Bosphorus Bridge's climate is classified as Hot-Summer Mediterranean - Hot-Summer Mediterranean climate with warm summers (peaking in July) and cold winters (coldest in January). Temperatures range from 3°C to 28°C. Moderate rainfall (718 mm/year).

Air Quality: AQI 66 Moderate
Best Time to Visit
JulyAugustJune
Temperature & Rainfall
Temperature Range
38°
Warmest Month
-6°
Coldest Month
Monthly Conditions

January

January is the coolest month with highs of 9°C and lows of 3°C. Regular rainfall (94 mm) and mostly overcast skies.

52 Acceptable

Comfort

Feels Like Cold
C
Temperature
83%
Humidity
Very Humid

Weather

94 mm
Rainfall
3.3 m/s
Wind
Light Breeze
0.2
UV Index
Low
9.4h daylight

February

February is the coolest month with highs of 9°C and lows of 3°C. Moderate rainfall (65 mm) and mostly overcast skies.

54 Acceptable

Comfort

Feels Like Cold
C
Temperature
82%
Humidity
Very Humid

Weather

65 mm
Rainfall
3.3 m/s
Wind
Light Breeze
0.3
UV Index
Low
10.5h daylight

March

March is cold with highs of 11°C and lows of 4°C. Moderate rainfall (65 mm) and mostly overcast skies.

54 Acceptable

Comfort

Feels Like Cold
C
Temperature
11°
79%
Humidity
Very Humid

Weather

65 mm
Rainfall
3.2 m/s
Wind
Light Breeze
0.6
UV Index
Moderate
11.8h daylight

April

April is cool with highs of 16°C and lows of 8°C. Moderate rainfall (47 mm) and partly cloudy skies.

69 Good

Comfort

12°
Feels Like Cool
12°C
Temperature
17°
76%
Humidity
Very Humid

Weather

47 mm
Rainfall
2.6 m/s
Wind
Calm
1.1
UV Index
High
13.2h daylight

May

May is cool with highs of 21°C and lows of 12°C. Moderate rainfall (37 mm) and partly cloudy skies.

77 Very Good

Comfort

17°
Feels Like Cool
17°C
Temperature
12° 21°
74%
Humidity
Very Humid

Weather

37 mm
Rainfall
2.5 m/s
Wind
Calm
1.5
UV Index
Very High
14.4h daylight

June

June is mild with highs of 26°C and lows of 16°C. Moderate rainfall (30 mm).

87 Excellent

Comfort

21°
Feels Like Mild
21°C
Temperature
16° 26°
69%
Humidity
Humid

Weather

30 mm
Rainfall
2.5 m/s
Wind
Calm
1.9
UV Index
Very High
15.0h daylight

July

July is the warmest month with highs of 28°C and lows of 19°C. The driest month with just 25 mm and mostly sunny skies.

95 Ideal

Comfort

23°
Feels Like Mild
23°C
Temperature
19° 28°
66%
Humidity
Humid

Weather

25 mm
Rainfall
2.8 m/s
Wind
Calm
2.0
UV Index
Extreme
14.7h daylight

August

August is mild with highs of 28°C and lows of 19°C. Moderate rainfall (35 mm) and mostly sunny skies.

92 Ideal

Comfort

23°
Feels Like Mild
23°C
Temperature
19° 28°
66%
Humidity
Humid

Weather

35 mm
Rainfall
3.0 m/s
Wind
Light Breeze
1.7
UV Index
Very High
13.7h daylight

September

September is mild with highs of 24°C and lows of 16°C. Moderate rainfall (43 mm) and partly cloudy skies.

85 Excellent

Comfort

20°
Feels Like Mild
20°C
Temperature
16° 24°
68%
Humidity
Humid

Weather

43 mm
Rainfall
2.9 m/s
Wind
Calm
1.1
UV Index
High
12.3h daylight

October

October is cool with highs of 19°C and lows of 12°C. Moderate rainfall (77 mm) and partly cloudy skies.

67 Good

Comfort

16°
Feels Like Cool
16°C
Temperature
12° 19°
76%
Humidity
Very Humid

Weather

77 mm
Rainfall
2.8 m/s
Wind
Calm
0.6
UV Index
Moderate
11.0h daylight

November

November is cool with highs of 14°C and lows of 8°C. Regular rainfall (88 mm) and mostly overcast skies.

53 Acceptable

Comfort

11°
Feels Like Cool
11°C
Temperature
15°
80%
Humidity
Very Humid

Weather

88 mm
Rainfall
2.8 m/s
Wind
Calm
0.3
UV Index
Low
9.7h daylight

December

December is cold with highs of 11°C and lows of 5°C. The wettest month with heavy rain (112 mm) and mostly overcast skies.

50 Acceptable

Comfort

Feels Like Cold
C
Temperature
11°
83%
Humidity
Very Humid

Weather

112 mm
Rainfall
3.2 m/s
Wind
Light Breeze
0.1
UV Index
Low
9.1h daylight

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