Friday, July 26, 2024

Infrastructure: Wyes

A wye is a common railroad track feature that can serve several different purposes. Usually triangular or Y-shaped, hence the name, the primary purpose of a wye is to allow a locomotive to reverse its orientation without the need of a turntable. Wyes can often be formed via the junction of three railroad branches or spurs, allowing trains coming from any direction to head in any direction. The benefit of a wye over a turntable is that it requires little more maintenance than a normal track switch and does not rely on a manual or mechanical turntable. The main downside is that a wye takes substantially more space than a turntable, especially if it includes a long spur to allow an entire train to reverse direction, as is sometimes the case. As a result, wyes can vary in size from relatively compact to encompassing an entire freight yard.

An excursion train returning from Davenport on the northwest leg of the Santa Cruz wye, July 21, 1951.
Photograph by Wilbur C. Whittaker. [Jim Vail – colorized using DeOldify]

The railroads of Santa Cruz County and the Santa Cruz Mountains have featured several wyes, though they were a later addition to local lines. None of the early narrow-gauge common carriers used wyes—they preferred turntables because they were more cost-effective and took substantially less space. Smaller locomotives were also easier to manually rotate on turntables than their larger brethren. There was also the issue of compatibility and competition. The Santa Cruz & Felton Railroad and Santa Cruz Railroad were rivals and did not have any formal connection between their lines, despite being the same gauge. Furthermore, both of their lines were linear, so only needed turntables at either end. This remained the case when the Santa Cruz & Felton Railroad was taken over by the South Pacific Coast Railroad in 1879. On the other side of the county, the narrow-gauge Santa Cruz Railroad was incompatible with the standard-gauge Southern Pacific tracks in Pajaro, so there was no opportunity to create a wye until the Santa Cruz Railroad was standard-gauged in 1883.

Aerial photograph of the Watsonville Junction freight yard with its wye, 1935. [UC Santa Cruz]

With the standard-gauging of the Santa Cruz Railroad, the first wye in the region was installed at Pajaro, later Watsonville Junction. This remains to this day the largest and most important wye in the region, switching trains between the Union Pacific Railroad's coastal track between San José and Salinas with trains from the Santa Cruz Branch Rail Line. The region's second wye may have been built as early as 1884, when the Loma Prieta Branch was constructed up Aptos Creek. However, the branch also had a turntable until some point before 1908, so it is possible that the wye replaced an earlier turntable between 1900, when Loma Prieta Station was closed, and 1908. This wye was located in Aptos across from the depot on the County Road (Soquel Drive), where a small yard was built to allow trains to move between the Loma Prieta Branch and the Santa Cruz Branch. It was bisected by the F. A. Hihn Company's apple warehouse spur, which also hosted the station's freight platform.

Sanborn Fire Insurance map showing the Aptos wye, 1908. [Library of Congress]

The largest wave of wye construction in the region happened between 1906 and 1909. During this time, a rivalry erupted between the upstart Ocean Shore Railway and the entrenched Southern Pacific Railroad. Along the coast, the Ocean Shore began building a route between San Francisco and Santa Cruz. In Santa Cruz, the company installed a wye within its maintenance yard paralleling Laguna Street on the West Side. North of Davenport, it built a second wye in 1907 at a place named Folger on the south bank of Scott Creek. This was intended to be a temporary turning point for trains until the route north was completed, which never happened. As such, two of its corners were stub spurs that only had enough space for the locomotive and tender to reverse. However, in 1908, the northeast corner of the wye was extended to Swanton to allow rail access to the San Vicente Lumber Company's timber holdings on Little Creek.

Aerial photograph showing the Davenport wye, 1928. [UC Santa Cruz]

Meanwhile, the Southern Pacific Railroad's Coast Line Railroad subsidiary built a wye at the Santa Cruz Union Depot. This was constructed for practical reasons rather than necessity—Santa Cruz already had a large mechanical turntable, but the wye allowed trains coming from Davenport to head either north through the Santa Cruz Mountains to the Bay Area or south to Salinas and Los Angeles. In Davenport, just north of the Santa Cruz Portland Cement Company refinery, a smaller wye was built to allow locomotives to turn around. Unlike all the other wyes in the region, this one never served any other purpose and included two stub spurs to allow the turning of the locomotive. At the same time Southern Pacific was building these wyes, they also built a wye at Vasona near Campbell to allow trains from Santa Cruz to take the Los Altos Branch (Mayfield Cut-off) to go directly to San Francisco, bypassing San José.

The southern leg of the Vasona Junction wye, circa 1958. [Charles Givens]

Further south, the Pajaro Valley Consolidated Railroad featured the region's only narrow-gauge wye at Moss Landing, which allowed sugar beet trains coming from both Watsonville and Salinas to collect or drop off freight at the seaport. The Southern Pacific Railroad, meanwhile, once had a wye at Castroville—or rather Del Monte Junction—allowing trains from the north and south to turn down the Monterey Branch. The Monterey Branch itself did not feature any wyes but it did host the region's only balloon loop track at Fort Ord. Much like a wye, a balloon loop allows a locomotive or train to reorient itself in the opposite direction. Such a feature typically takes even more physical space than a wye but only requires one switch and is designed to reposition an entire train, thereby simplifying the reversing process.

Aerial photograph of the Moss Landing wye, 1931. [UC Santa Cruz]

Gradually, all of the region's wyes have been disestablished with the exception of those at Santa Cruz and Watsonville Junction, both of which remain in regular use. The Ocean Shore Railroad's wyes were removed no later than 1923, when the entire Southern Division was disestablished and demolished. The Aptos wye was removed around 1928 when the Loma Prieta Branch was abandoned. The Davenport Branch was probably removed in the 1950s or 1960s once diesel locomotives allowed the trains to more easily reverse along the entire 11-mile Davenport Branch. Vasona Junction's wye was decommissioned in January 1964 when the Los Altos Branch was cut back and became the Permanente spur. More recently, the Watsonville Junction yard was reconfigured dramatically and reduced in size. As a result, the outer track of the wye that crossed Salinas Road to the west was removed and a new track installed through the center of the yard through the former site of the roundhouse, thereby creating a tighter wye.

Aerial photograph of the Santa Cruz wye and freight yard, 1931. [UC Santa Cruz]

There is still one last wye, as well as two more loops, in Santa Cruz County. Roaring Camp & Big Trees Railroad, a tourist excursion train service that runs up Bear Mountain in Felton, includes a wye just beside the park entrance, wrapping around the pump house. Furthermore, the main track wraps around the recreated town and picnic grounds, creating a loop that allows narrow-gauge steam trains to reverse direction and climb up the mountain. Similarly at the top of the mountain, a loop wraps around the upper picnic area at the summit, reorienting trains so they can properly descend the mountain. In contrast to Roaring Camp's route, all of the miniature railroads in the region have relied on turntables or loops to reverse their engines.

Southern Pacific Railroad (Monterey Bay and Santa Cruz Mountains):

The Ocean Shore Railway (Southern Division):
The Pajaro Valley Consolidated Railroad:
Roaring Camp & Big Trees Narrow-Gauge Railroad:

No comments:

Post a Comment

Note: Only a member of this blog may post a comment.