31:
267:. After a study of alternatives, where the bridge should have a cable supported deck in order to fulfill the technical specifications of the contract, it was proposed to modify the structural type to improve the visual impact on the landscape of La Paz. Therefore, it was proposed an extradosed bridge type, which reduces the height of the pylon, and a single plane of stays to allow a more transparent view
282:
The deck is connected monolithically with the two piers, forming a portal frame, and rests on neoprene bearings at the abutments. The deck is a single-cell box 14 metres (46 ft) wide, whose depth varies between 3.5 and 2.1 metres (11.5 and 6.9 ft) between the piers and central areas or near
258:
The project was funded by CAF (Corporación Andina de
Fomento) through a credit to the Municipality in 2006. In 2007, the Municipal Government of La Paz awarded the design and construction of The Triplets Bridge Project to the JV “Consorcio Asociación Accidental Progreso”. As part of this contract,
278:
The bridge deck is 14.8 metres (49 ft) wide and carries four vehicular lanes, two lateral sidewalks 1.4 metres (4.6 ft) wide, and a central median of 1 metre (3.3 ft) where stays anchor, protected on each side by a rigid concrete barriers.
262:
There was a preliminary design that defined three three-span cable-stayed bridges with central spans between 90 and 110 metres (300 and 360 ft) and two cable-stay planes, similar to another existing in the city: the
307:
The project was awarded with the Eugene C. Figg, Jr. Medal for
Signature Bridges at the International Bridge Conference (Pittsburgh, June 2012), at a city that also has 3 very similar bridges --
283:
abutments. The piers, with a single shaft in their full height, are made of reinforced concrete. Some of the piers reach 40 m in height. The pylon coincides with the pier axis under the
275:
The
Triplets have similar structural pattern and basic idea, but the dimensions are different. All bridges are extradosed with a three-span deck and single central plane of stays.
48:
319:
The bridge construction began in
November 2007 and was completed in mid-2010 to coincide with the commemoration of the Bicentennial of Independence.
461:
441:
420:
396:
451:
408:
203:
41:
446:
264:
308:
456:
294:
Kantutani Bridge: the bridge has three spans of 52.75 + 113.5 + 67.25 metres (173.1 + 372.4 + 220.6 ft)
400:
300:
Orkojahuira Bridge: the bridge has three spans of 50.3 + 103 + 65.5 metres (165 + 338 + 215 ft)
297:
Choqueyapu Bridge: the bridge has three spans of 52.5 + 92.5 + 46.5 metres (172 + 303 + 153 ft)
424:
244:
388:
380:
372:
143:
287:. Pylon is 15 metres (49 ft) high and has rectangular cross-section linearly variable.
30:
435:
364:
284:
412:
64:
50:
153:
252:
112:
248:
108:
304:
The total cost of the structure was approximately US$ 18.3 million.
259:
PEDELTA carried out the conceptual and final detailed design.
290:
The geometric main features of the bridges are as follows:
345:
Sobrino, Juan (September 2011). "Building
Triplets".
232:
217:
209:
199:
194:
183:
175:
167:
159:
149:
139:
134:
126:
118:
104:
96:
88:
40:
21:
8:
18:
163:Overall length 644 m (2,113 ft)
328:
340:
338:
336:
334:
332:
7:
14:
213:Juan A. Sobrino and Javier Jordán
100:Choqueyapu River and its ravines
29:
247:are part of a north beltway of
462:2010 establishments in Bolivia
184:
122:Independencia, Libertad, Union
1:
442:Extradosed bridges in Bolivia
409:"Eugene Figg Award IBC 2012"
397:"Eugene Figg Award IBC 2012"
204:Pedelta Structural Engineers
478:
347:Roads and Bridges Magazine
309:Three Sisters (Pittsburgh)
179:113.5 m (372 ft)
452:Bridges completed in 2010
423:. Pedelta. Archived from
237:
28:
16:Bridge in La Paz, Bolivia
171:14.8 m (49 ft)
65:16.516272°S 68.118217°W
421:"The Triplets Bridges"
265:Bridge of the Americas
70:-16.516272; -68.118217
210:Engineering design by
130:Envigado Municipality
389:"Orkojahuira Bridge"
76:The Triplets Bridges
23:The Triplets Bridges
373:"Choqueyapu Bridge"
60: /
447:Bridges in Bolivia
381:"Kantutani Bridge"
245:Extradosed bridges
243:Three consecutive
221:November 2010
241:
240:
144:Extradosed bridge
469:
457:Concrete bridges
428:
416:
411:. Archived from
404:
399:. Archived from
392:
384:
376:
368:
351:
350:
342:
228:
226:
186:
84:
83:
81:
80:
79:
77:
72:
71:
66:
61:
58:
57:
56:
53:
33:
19:
477:
476:
472:
471:
470:
468:
467:
466:
432:
431:
419:
407:
395:
387:
379:
371:
363:
360:
355:
354:
344:
343:
330:
325:
317:
273:
224:
222:
135:Characteristics
75:
73:
69:
67:
63:
62:
59:
54:
51:
49:
47:
46:
36:
24:
17:
12:
11:
5:
475:
473:
465:
464:
459:
454:
449:
444:
434:
433:
430:
429:
427:on 2013-11-11.
417:
415:on 2009-02-11.
405:
403:on 2013-02-17.
393:
385:
377:
369:
359:
358:External links
356:
353:
352:
327:
326:
324:
321:
316:
313:
302:
301:
298:
295:
272:
269:
239:
238:
235:
234:
230:
229:
219:
215:
214:
211:
207:
206:
201:
197:
196:
192:
191:
188:
181:
180:
177:
173:
172:
169:
165:
164:
161:
157:
156:
151:
147:
146:
141:
137:
136:
132:
131:
128:
124:
123:
120:
116:
115:
106:
102:
101:
98:
94:
93:
92:Motor vehicles
90:
86:
85:
44:
38:
37:
34:
26:
25:
22:
15:
13:
10:
9:
6:
4:
3:
2:
474:
463:
460:
458:
455:
453:
450:
448:
445:
443:
440:
439:
437:
426:
422:
418:
414:
410:
406:
402:
398:
394:
390:
386:
382:
378:
374:
370:
366:
362:
361:
357:
348:
341:
339:
337:
335:
333:
329:
322:
320:
314:
312:
310:
305:
299:
296:
293:
292:
291:
288:
286:
280:
276:
270:
268:
266:
260:
256:
254:
250:
246:
236:
231:
220:
216:
212:
208:
205:
202:
198:
193:
189:
182:
178:
174:
170:
166:
162:
158:
155:
152:
148:
145:
142:
138:
133:
129:
127:Maintained by
125:
121:
119:Official name
117:
114:
110:
107:
103:
99:
95:
91:
87:
82:
45:
43:
39:
32:
27:
20:
425:the original
413:the original
401:the original
346:
318:
315:Construction
306:
303:
289:
281:
277:
274:
261:
257:
242:
176:Longest span
160:Total length
271:Description
68: /
42:Coordinates
35:Bridge view
436:Categories
323:References
285:box girder
74: (
55:68°07′06″W
52:16°30′59″S
233:Location
200:Designer
187:of spans
154:Concrete
150:Material
365:"Video"
253:Bolivia
225:2010-11
223: (
195:History
113:Bolivia
97:Crosses
89:Carries
249:La Paz
218:Opened
140:Design
109:La Paz
105:Locale
168:Width
251:in
185:No.
438::
331:^
311:.
255:.
111:,
391:.
383:.
375:.
367:.
349:.
227:)
190:3
78:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
