Knowledge (XXG)

Berkeley Hills Tunnel

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bisects the tunnel about 900 feet (270 m) inside the west portal (Oakland side). There are 2 bores, each 17.5 feet (5.3 m) in diameter, spaced 50 feet (15 m) apart. Pedestrian cross-tunnels are spaced every 1,000 feet (300 m) for emergency evacuation in case of fire, etc. There is
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By 2017, cumulative minor damage from fault creep had significantly reduced the tunnel's cross section, to the point where BART determined it was necessary to plan for repair and mitigation against future creep. The work, which includes excavating the tunnel walls and realigning the tracks, is
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Construction of the tunnel began in early February, 1965. The bores were holed through by March, 1967, and construction completed in July, 1968. The tunnel was opened for revenue service on May 21, 1973, with the Concord line.
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The tunnel bores through the Berkeley Hills east of Berkeley and Oakland a distance of 3.1 miles (5.0 km) through a variety of rock strata, most of which are soft and porous. The earthquake-active
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a ventilation structure at the east portal with roll-down doors that can close off the tunnel end to allow air to be sucked out or blown in.
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on both sides of the tunnel, the Berkeley Hills Tunnel allows the tracks to take a straighter alignment offset to the north of the
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On December 4, 2013, a BART train suffered mechanical braking problems and made an emergency stop in the tunnel near
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Material removed in the construction of the tunnel was used as fill for a concurrent expansion of the
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Transportation buildings and structures in Contra Costa County, California
553:"Engineering Geology of the Bay Area Rapid Transit (BART) System, 1964-75" 1736: 2060:
Transportation buildings and structures in Alameda County, California
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This article is about the rail tunnel. For the road tunnel, see
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Parsons Brinckerhoff / Tudor / Bechtel. pp. 19, 20 681:"BART Brake Smoke Causes Injuries in Caldecott Tube" 2001: 1981: 1960: 1931: 1874: 1867: 1833: 1811: 1786: 1763: 1735: 1679: 1661: 1609: 1591: 1584: 1490: 1412: 1375: 1334: 1287: 1260: 1210: 1157: 1084: 1062: 924: 915: 904: 873: 843: 752: 745: 376: 366: 347: 324: 310: 302: 297: 287: 277: 267: 249: 239: 231: 226: 215: 201: 187: 173: 163: 89: 75: 56: 48: 43: 38:East portal structure of the Berkeley Hills Tunnel 1561: 721: 521:"The Composite Report Bay Area Rapid Transit" 282:San Francisco Bay Area Rapid Transit District 272:San Francisco Bay Area Rapid Transit District 8: 26: 644:"BART Chronology January 1947 – March 2009" 2070:Rail transportation in Oakland, California 1871: 1588: 1568: 1554: 1546: 1347:Doolittle Maintenance and Storage Facility 1266: 921: 912: 749: 728: 714: 706: 25: 546: 544: 542: 498: 424:While the tracks run in the median of 16:Rapid transit tunnel in California, US 2055:Tunnels in the San Francisco Bay Area 7: 487:List of tunnels in the United States 1241:San Francisco International Airport 679:Shields, Brian (December 4, 2013). 1139:Pleasant Hill/​Contra Costa Centre 14: 473:. Eleven people were treated for 1858: 1243: 967: 32: 1515:Bay Area Rapid Transit District 934:12th Street Oakland City Center 445:expected to cost $ 60 million. 2050:Railroad tunnels in California 557:Index of /~mly/www.geolith.com 311: 216: 1: 1645:Silicon Valley BART extension 1535:Category for related articles 965:Oakland International Airport 738:Bay Area Rapid Transit (BART) 1296:28th Street/​Little Portugal 1049:Warm Springs/​South Fremont 2091: 874:Automated guideway transit 18: 2075:Tunnels completed in 1973 1856: 1482:Bob Powers (2019–present) 1274:Berryessa/​North San José 1269: 989: 891:Oakland Airport Connector 426:California State Route 24 306:3.1 mi (5.0 km) 31: 1824:Summit Tunnel (proposed) 1445:Frank Wilson (1989–1994) 1400:     1392:Silicon Valley extension 669:, October 24, 1966, p.13 331:5 ft 6 in 1119:North Concord/​Martinez 1054:West Dublin/​Pleasanton 1973:Robin Williams (Waldo) 1578:San Francisco Bay Area 1508:Killing of Oscar Grant 1182:Civic Center/​UN Plaza 398:Bay Area Rapid Transit 372:16.8 feet (5.1 m) 255:; 51 years ago 168:Bay Area Rapid Transit 148:37.87472°N 122.18778°W 115:37.85139°N 122.23806°W 1342:Berkeley Hills Tunnel 608:"BART Board Workshop" 559:. Geolith Engineering 390:Berkeley Hills Tunnel 52:Caldecott BART Tunnel 27:Berkeley Hills Tunnel 1627:Fremont Central Park 1430:Larry Dahms (Acting) 1352:Market Street subway 1129:Pittsburg/​Bay Point 1104:El Cerrito del Norte 656:on October 13, 2013. 153:37.87472; -122.18778 120:37.85139; -122.23806 1252:South San Francisco 1172:24th Street Mission 1167:16th Street Mission 1086:Contra Costa County 939:19th Street Oakland 551:Rogers & Peck. 144: /  111: /  28: 2045:Yellow Line (BART) 1778:Puerto Suello Hill 1262:Santa Clara County 1014:Dublin/​Pleasanton 49:Other name(s) 2027: 2026: 1997: 1996: 1952:Posey and Webster 1910:Southern Crossing 1854: 1853: 1543: 1542: 1387:Planned expansion 1330: 1329: 1326: 1325: 1310:Downtown San José 1197:Montgomery Street 1080: 1079: 1009:Downtown Berkeley 900: 899: 864: 471:Rockridge station 410:Rockridge station 386: 385: 253:May 21, 1973 192:Rockridge Station 2082: 1914: 1904:Presidio Parkway 1893: 1872: 1862: 1826: 1804: 1756: 1718: 1710: 1700: 1649: 1589: 1570: 1563: 1556: 1547: 1483: 1478: 1470: 1462: 1454: 1451:Richard A. White 1446: 1441: 1436: 1431: 1426: 1405: 1401: 1379: 1267: 1248: 1247: 1212:San Mateo County 1134:Pittsburg Center 1109:El Cerrito Plaza 972: 971: 922: 913: 908: 893: 889: 886: 866: 862: 859: 856: 836: 832: 829: 820: 816: 813: 804: 800: 797: 788: 784: 781: 772: 768: 765: 750: 739: 730: 723: 716: 707: 700: 699: 697: 696: 691:on March 2, 2014 687:. Archived from 676: 670: 667:Berkeley Gazette 664: 658: 657: 655: 648: 640: 634: 629: 623: 622: 620: 618: 612: 604: 598: 597: 595: 594: 585:. Archived from 575: 569: 568: 566: 564: 548: 537: 536: 534: 532: 517: 511: 510: 503: 475:smoke inhalation 430:Caldecott Tunnel 368:Tunnel clearance 336: 332: 313: 263: 261: 256: 218: 159: 158: 156: 155: 154: 149: 145: 142: 141: 140: 137: 126: 125: 123: 122: 121: 116: 112: 109: 108: 107: 104: 68: 65: 36: 29: 21:Caldecott Tunnel 2090: 2089: 2085: 2084: 2083: 2081: 2080: 2079: 2030: 2029: 2028: 2023: 1993: 1977: 1956: 1927: 1907: 1886: 1863: 1850: 1829: 1822: 1807: 1797: 1782: 1759: 1749: 1745:Bayshore Cutoff 1731: 1713: 1703: 1693: 1675: 1657: 1642: 1623:Berkeley Subway 1605: 1580: 1576:Tunnels in the 1574: 1544: 1539: 1525:Library-A-Go-Go 1486: 1481: 1473: 1465: 1457: 1449: 1444: 1439: 1435:Frank Herringer 1434: 1429: 1421: 1414: 1408: 1399: 1398: 1377: 1371: 1362:Ohlone Greenway 1322: 1283: 1256: 1239: 1206: 1153: 1076: 1058: 985: 963: 906: 896: 884: 881: 880: 869: 854: 851: 850: 839: 827: 824: 823: 811: 808: 807: 795: 792: 791: 779: 776: 775: 763: 760: 759: 741: 737: 734: 704: 703: 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Street 1200: 1198: 1195: 1193: 1190: 1188: 1185: 1183: 1180: 1178: 1175: 1173: 1170: 1168: 1165: 1164: 1162: 1160: 1159:San Francisco 1156: 1150: 1147: 1145: 1142: 1140: 1137: 1135: 1132: 1130: 1127: 1125: 1122: 1120: 1117: 1115: 1112: 1110: 1107: 1105: 1102: 1100: 1097: 1095: 1092: 1091: 1089: 1087: 1083: 1073: 1072: 1068: 1067: 1065: 1061: 1055: 1052: 1050: 1047: 1045: 1042: 1040: 1039:South Hayward 1037: 1035: 1032: 1030: 1027: 1025: 1022: 1020: 1017: 1015: 1012: 1010: 1007: 1005: 1004:Castro Valley 1002: 1000: 997: 995: 992: 991: 988: 982: 979: 977: 974: 970: 966: 962: 960: 957: 955: 952: 950: 947: 945: 942: 940: 937: 935: 932: 931: 929: 927: 923: 920: 918: 914: 911: 909: 903: 892: 887: 879: 878: 876: 872: 865: 857: 849: 848: 846: 842: 835: 830: 822: 819: 814: 806: 803: 798: 790: 787: 782: 774: 771: 766: 758: 757: 755: 753:Rapid transit 751: 748: 746:Current lines 744: 740: 731: 726: 724: 719: 717: 712: 711: 708: 690: 686: 682: 675: 672: 668: 663: 660: 652: 645: 639: 636: 633: 628: 625: 609: 603: 600: 589:on 2017-12-01 588: 584: 580: 574: 571: 558: 554: 547: 545: 543: 539: 526: 522: 516: 513: 508: 502: 499: 492: 488: 485: 484: 480: 478: 476: 472: 464: 462: 460: 455: 448: 446: 442: 439: 438:Hayward Fault 433: 431: 427: 419: 417: 415: 411: 407: 403: 399: 395: 391: 382:1.2% (2% max) 381: 379: 375: 371: 369: 365: 362: 359: 355: 352: 350: 346: 342: 335:1,676 mm 329: 327: 323: 319: 317: 309: 305: 301: 296: 293: 292:Rapid transit 290: 286: 283: 280: 276: 273: 270: 266: 252: 248: 245: 242: 238: 234: 230: 225: 221: 214: 211: 207: 204: 200: 197: 193: 190: 186: 183: 182:Hayward Fault 179: 176: 172: 169: 166: 162: 157: 124: 94: 92: 88: 85: 81: 78: 74: 71: 66: 59: 55: 51: 47: 42: 35: 30: 22: 2014:Hetch Hetchy 1908: 1887: 1823: 1812: 1800:Pacheco Pass 1798: 1787: 1750: 1704: 1694: 1643: 1618: 1601:Niles Canyon 1520:Clipper card 1423:B. R. Stokes 1341: 1315: 1308: 1301: 1294: 1149:Walnut Creek 1069: 981:West Oakland 954:Lake Merritt 861:Yellow Line 693:. Retrieved 689:the original 684: 674: 666: 662: 651:the original 638: 627: 615:. Retrieved 602: 591:. Retrieved 587:the original 582: 573: 561:. Retrieved 556: 529:. Retrieved 524: 515: 501: 468: 456: 452: 449:Construction 443: 434: 423: 404:through the 389: 387: 341:Indian gauge 1968:Baker–Barry 1943:Ferry Point 1923:Yerba Buena 1814:Valley Link 1638:Oakland Wye 1530:Valley Link 1503:BART Police 1477:(2011–2019) 1469:(2007–2011) 1461:(1996–2007) 1453:(1994–1996) 1425:(1963–1974) 1403:Purple Line 1357:Oakland Wye 1317:Santa Clara 1187:Embarcadero 1177:Balboa Park 1034:San Leandro 834:Yellow Line 802:Orange Line 525:Archive.org 507:"Figure 12" 402:Yellow Line 349:Electrified 326:Track gauge 303:Line length 240:Constructed 219:of stations 151: / 139:122°11′16″W 118: / 106:122°14′17″W 91:Coordinates 70:Yellow Line 2034:Categories 1989:Tom Lantos 1912:(proposed) 1891:(proposed) 1802:(proposed) 1754:(proposed) 1752:The Portal 1727:Twin Peaks 1708:(proposed) 1698:(proposed) 1696:Fort Mason 1681:Muni Metro 1044:Union City 844:Light rail 786:Green Line 695:2013-12-05 593:2018-11-05 493:References 354:Third rail 260:1973-05-21 232:Work begun 136:37°52′29″N 103:37°51′05″N 84:California 2019:Mile Rock 2009:Claremont 1982:Peninsula 1961:North Bay 1947:Northbrae 1939:Caldecott 1900:MacArthur 1834:Abandoned 1235:San Bruno 1225:Daly City 1192:Glen Park 1114:Lafayette 1071:Irvington 976:Rockridge 959:MacArthur 949:Fruitvale 770:Blue Line 617:April 28, 465:Incidents 298:Technical 288:Character 227:Operation 1932:East Bay 1918:Stockton 1889:Fillmore 1882:Broadway 1737:Caltrain 1671:Franklin 1653:Transbay 1415:managers 1279:Milpitas 1230:Millbrae 1144:Richmond 999:Bay Fair 944:Coliseum 907:Stations 818:Red Line 481:See also 408:between 278:Operator 76:Location 44:Overview 2002:Utility 1846:Wrights 1689:Central 1413:General 1378:History 1303:Diridon 1099:Concord 1094:Antioch 1024:Hayward 1019:Fremont 926:Oakland 863:(eBART) 563:22 June 531:23 July 400:(BART) 356:, 1000 258: ( 196:Oakland 174:Crosses 1722:Sunset 1715:Market 1647:(2036) 1632:Market 1124:Orinda 888:  882:  858:  852:  831:  825:  815:  809:  799:  793:  783:  777:  767:  761:  420:Design 394:tunnel 316:tracks 250:Opened 210:Orinda 164:System 67:  61:  1789:CAHSR 1765:SMART 1706:Geary 1491:Other 1220:Colma 994:Ashby 685:KRON4 654:(PDF) 647:(PDF) 611:(PDF) 392:is a 378:Grade 268:Owner 188:Start 1868:Road 1841:Alto 1663:BNSF 1611:BART 1585:Rail 619:2019 565:2017 533:2018 412:and 388:The 235:1965 222:None 57:Line 1593:ACE 885:OAK 314:of 312:No. 217:No. 202:End 2036:: 683:. 581:. 555:. 541:^ 523:. 477:. 461:. 432:. 416:. 361:DC 208:, 194:, 180:, 82:, 1569:e 1562:t 1555:v 855:Y 828:Y 812:R 796:O 780:G 764:B 729:e 722:t 715:v 698:. 621:. 596:. 567:. 535:. 509:. 358:V 343:) 339:( 337:) 333:( 320:2 262:) 64:Y 23:.

Index

Caldecott Tunnel
An angular concrete structure
Y
Yellow Line
Alameda County
California
Coordinates
37°51′05″N 122°14′17″W / 37.85139°N 122.23806°W / 37.85139; -122.23806
37°52′29″N 122°11′16″W / 37.87472°N 122.18778°W / 37.87472; -122.18778
Bay Area Rapid Transit
Berkeley Hills
Hayward Fault
Rockridge Station
Oakland
Orinda Station
Orinda
drill-and-blast
San Francisco Bay Area Rapid Transit District
San Francisco Bay Area Rapid Transit District
Rapid transit
tracks
Track gauge
Indian gauge
Electrified
Third rail
V
DC
Tunnel clearance
Grade
tunnel

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