by Sergio Herrera

1. 25th April Bridge
Sergio Herrera Palacios

2. Why do people confuse 25th April
and Golden Gate?
25th April (1966) Golden Gate (1937)
Similarities:
1. Suspension bridges Differences:
2. 2 towers 1. Trusses
3. Length, longest span, clearance below 2. Construction company
4. Painted in red
5. Structural design: eartquakes, winds

3. Really, based on…
25th April San Francisco-Oakland Bay

4. 25th April Bridge
• 1. Brief History
• 2. Construction
• 3. Characterisctics
• 4. Other data

5. 1. Brief history
• Initial designation (1966): Salazar Bridge
• Current name(1974): 25th April Bridge after the
Revolution
2. Construction
- Workers: 3.000
- Months: 45
- Inauguration in 1966, 5 months earlier
- Cost: $ 32 million Tolls for 25 years

6. 3. Characteristics
• Total lenght: 2.3 km, > 1 km are suspended
• Double deck:
- The upper platform: 4 lanes 6 lanes
- The lower platform: 2 railway tracks
* Part of the initial design but was eliminated and
structure lightened
* Necessary: extensive structural reinforcements
(2nd set of main cables and > height towers)

7. 4. Other data
• Clearance below: 70 m
• Height of main tower: 190 m
• Depth (below deep water) of the foundation of south pilar:
79.3 m