| TEHACHAPI 
      LOOP A World-Famous Railroad Construction Achievement of the 19th Century
 Located about eight miles west of Tehachapi, California, near Highway 58
 In the 1870's the Southern Pacific (Central Pacific) Railroad sought
 to link their rails in central California to those in Southern California.
 The path was blocked by the rugged Tehachapi Mountain range, which acts 
        as
 an east-west barrier between Bakersfield and Los Angeles. Since construction
 directly south was impractical, the Southern Pacific Railroad decided 
        to go
 southeast to Mojave, through the Tehachapi Pass. The summit at Tehachapi
 Pass was 4000'. Construction from Bakersfield to Caliente was somewhat
 routine, but from that point on the elevation going east rises quickly. 
        From
 Caliente to the summit (now the City of Tehachapi) the rise is 2,735 feet.
 The maximum grade permitted was 2.2%. By routing the track alongside the
 slopes of the Tehachapi foothills, engineer William Hood could envision
 completing the task. However, just east of Keene, there was an apparently
 unsolvable problem. An increase in elevation of nearly 80 feet was required,
 unattainable using typical designs.
 
 The problem was solved by constructing a unique loop. Going
 southeasterly from Keene, a train first passes through an entry tunnel. 
        The
 track then does a complete counterclockwise loop, passing over the entry
 tunnel before continuing easterly. (See sketch below). The loop is sized 
        to
 have a length adequate to achieve the needed gain in elevation. The result
 is a loop 3,799' long, with a typical diameter of about 1210 feet. By
 continuing to gain elevation throughout the loop, engineer Hood was able 
        to
 make up the needed elevation (about 77' rise in the loop). With modern
 freight trains, often more than a mile long, the locomotive passes over 
        (or
 under, depending upon direction) the final cars of its own train!
  The entire track from Bakersfield to 
        the summit was completed July 10, 1876. In all, in addition to the loop, there are 18 tunnels with a total
 length of 8,240'. There are 8,300 degrees of rotation as the track twists
 and turns through and along the mountains. The total distance from Caliente
 to Tehachapi (summit) is about 16 miles.
  The construction was undertaken by American 
        engineers and Chinese workmen. The Chinese were "Cantonese", mostly recruited from 
        Canton (now
 Guongjhou) area. Construction tools were mostly dynamite, picks and shovels.
 Many of the workmen were killed during this dangerous work.
  The Chinese workmen referred to the Tehachapi 
        Loop as "Walong".There is no such word in Cantonese. Since the workmen spoke no English and the
 Americans spoke no Chinese, the English interpretation of Walong could 
        come
 from either of two Chinese expressions.
  Dr. Fung Chi-ming of the Hong Kong Museum 
        of History suggests that "Wa" = China (or Chinese) and "Long" is similar to 
        the Cantonese word for
 "road". Hence, Walong means "Chinese Road".
  James W.H. Wong suggests that "Wa" 
        could have really been "Wan" = coil or coiled, and that "Loon" in Cantonese could sound similar 
        to Long to the
 American ear. "Loon" = Dragon. In this case, Walong would be 
        "Coiled
 Dragon", which also seems an appropriate name for the Tehachapi Loop.
  The steep grade of the track from Keene 
        to Tehachapi has always been a problem for the railroad. In 1882, a special locomotive, "El Gobernador" 
        was
 developed especially for hauling trains to the summit. It proved to be 
        too
 bulky for this service, and after a few years El Gobernador was scrapped.
  Today the Tehachapi Loop (operated jointly 
        by the Union Pacific and Santa Fe Railroads) is on the main artery joining the agricultural and
 petroleum products of the San Joaquin Valley to Arizona and east. As many 
        as
 40 freight trains a day execute the loop, making it the busiest single-track
 line in the United States. Long eastbound freight trains cannot negotiate
 the grade with a normal locomotive complement, and it is undesirable for 
        the
 couplings between forward cars to support the high tension loads. Therefore,
 "helper" engines are inserted in the middle of the train. Upon 
        reaching the
 City of Tehachapi, the helpers are switched out, and then returned to
 Bakersfield.
  Even as recently as 1950 many passenger 
        trains stopped in Tehachapi. The last passenger service was discontinued in 1971. In 1950, "First 
        Class"
 service to Bakersfield took about one hour and 40 minutes. However, using
 modern highway 58, one can drive to Bakersfield in 45 minutes. For this 
        and
 other reasons, passenger trains from which to view the Tehachapi Loop 
        are no
 longer available. However, you can vicariously enjoy the ride between
 Caliente and the Summit by video tape. An excellent 80 minute railroad 
        tour,
 "Tehachapi", is carried by Tehachapi Radio Shack, 805/822-4512.
  The loop carries an enormous amount of 
        freight daily. It is easily accessible by auto. Take Highway 58 northwest from Tehachapi (or southeast
 from Bakersfield) to Keene. From Keene follow the sign pointing to Tehachapi
 Loop. You will pass "La Paz" on the way. (La Paz is the burial 
        site of Cesar
 Chavez, and the headquarters of the United Farm Workers Union). "Loop 
        Ranch"
 is the name of the ranch hosting the loop. It is about three miles from
 Keene to the loop along a paved road. So far there have been no problems 
        in
 finding off-street parking while awaiting a train. Be aware, however, 
        that
 freight schedules are not predictable, and there is no guarantee of railroad
 traffic frequency.
  Continue on about one mile and there 
        will be a viewsite with two monuments on your left, looking down on the loop. The first monument is 
        a
 National Historic Landmark. The second monument is a National Historic 
        Civil
 Engineering Landmark (installed 10/10/98). The Civil Engineering Landmark
 honors the construction feat of the entire track from Caliente to Mojave. 
        It
 especially recognizes the effort of Southern Pacific Railroad chief engineer
 and construction boss J. B. Harris in designing and constructing the line,
 whose major feature is the Tehachapi Loop. Speakers at the October 10
 presentation were Tehachapi Mayor John Rombouts, civil engineer Warren
 Minner, Chuck Kirkland (president of the Tehachapi Loop Railroad Club), 
        Del
 Troy (president of the Tehachapi Heritage League), and Mary Ming,
 Bakersfield historian. Mary Ming discussed the brave efforts of the Chinese
 workers.
  An excellent 300-page book detailing 
        this railroad construction is "TEHACHAPI (Southern Pacific - Santa Fe)", copyright 1983 by 
        John R. Signor.
 Golden West Books, San Marino, CA 91108. ISBN 0-87095-088-6. As of February,
 1996, this book was out of print, but may be available through libraries.
  Yet another bibliographic resource is 
        TEHACHAPI RAIL MAP AND GUIDE, Sam Pottinger, Steel Rails West, P.O. Box 59117, Norwalk, CA 90652-0117.
  A live camera is set up to photograph 
        trains as they enter Tehachapi Loop. For a current photo from Tehachapi Loop click here. (Photo may not 
        be
 useful in inclement weather or nightfall.)
 Prepared by J.C. Sammis - 1996. Modified 
        to show Union Pacific Railroad instead of Southern Pacific Railroad & added sound. 1998. Added reference 
        to
 Civil Engineering Landmark and to meaning of "Walong", 1998.
 
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