Bridges: North Coast Fills

The greatest engineering feat in Santa Cruz County’s history still survives to this day, though most people think little of it if they notice it at all. From October 1905 to June 1907, the quarrelsome Southern Pacific Railroad and Ocean Shore Railway put aside their differences to quickly and efficiently build an 11-mile-long line through the West Side of Santa Cruz to Davenport. To ensure the straightest and most level route possible, the companies approved the construction of at least thirteen trestles, which were afterwards filled with millions of cubic feet of rubble to support three standard-gauge tracks at the crest. These colossal structures remain today as testaments to the durability of early 20th century engineering and to the bold ambitions that motivated Progressive Era capitalists.

Shattuck & Desmond work crews in the process of filling the tall, slightly slumped trestle over Majors Creek, 1906. [Covello & Covello – Colorized using DeOldify]

Although the Southern Pacific’s Coast Line Railway was the first to incorporate in April 1905, it was the Ocean Shore Railway, incorporated a month later, that made the first move toward realizing its goal of connecting San Francisco and Santa Cruz via a coastal route. Grading for the Ocean Shore Railway began along the shoreline at Waddell Creek on June 1, 1905, an action that was intended to steal the march from the Coast Line Railway. The gambit forced Southern Pacific to show its cards. The company give up surveying beyond Agua Puerca Creek and it was revealed in August that Southern Pacific had acquired the exclusive contract to deliver the machinery of the Santa Cruz Portland Cement Company to the site of the planned quarry and refinery on San Vicente Creek by January 1, 1906. In addition, the railroad would become the sole rail freight carrier for the plant. But to secure these contracts, Southern Pacific needed to build a railroad to Davenport.

Thus, the race was on. Both railroads obtained most of their rights-of-way to the cement plant site by August 1905, but neither managed to secure an uninterrupted route. Instead, the rights-of-way crisscrossed each other constantly from Wilder’s Ranch to San Vicente Creek. They also crossed the county road at least six times, meaning there would be several grade crossings. None of this was appealing to the railroads or residents. In late June, T. J. Wilson of the Coast Line Railway and L. E. Rankin of the Ocean Shore Railway, both in charge of the rights-of-way of their respective railroads, met in Santa Cruz to discuss the issues with their routes. Meanwhile, Pratchner & Company began grading the Ocean Shore through the West Side of Santa Cruz.

The Wilder's Gulch fill, from "Plans of Oceanshore RR Co.," 1912.

Earlier, at the end of June, the Ocean Shore was granted permission to bridge Wilder Gulch and Sandy Flat, though it agreed not to fill these two trestles since the Wilder family wished to retain its view of and access to the Pacific Ocean. Once construction began a few weeks later, though, the railroad decided to install a fill Wilder Gulch anyway. In fact, this is the only substantial gulch on the line that did not host a trestle first. After consulting his lawyer, D. D. Wilder went to protest the fill at the company’s office in San Francisco. Despite this, the Ocean Shore continued construction, completing the fill in late November. Probably as part of a settlement with the family, the company committed to constructing a permanent trestle over Sandy Flat, as had been originally agreed.

The start of construction on the Coast Line Railway on the bluff above the Santa Cruz Union Depot yard, late 1905. [Courtesy ebay – colorized using MyHeritage]

Continued feuding and sabotage between the two railroads and unrelated problems elsewhere delayed the start of construction of the Coast Line Railway. While Southern Pacific had blocked the Ocean Shore Railway’s access to the Santa Cruz Beach for its proposed wharf, Ocean Shore in turn had blocked the Coast Line’s ability to cross through the Coast Dairies Company’s property, which was necessary for it to reach the plant site. No further progress could be made by either company and Southern Pacific would soon be forced to renege on its contract with the cement company. After several meetings, the two rivals came to an arrangement where rights-of-way would be exchanged, access at either end would be granted, the Ocean Shore would deliver the machinery for Southern Pacific as a contractor, and the two railroads would run parallel between Lombardi Gulch and the plant site, with Ocean Shore paying two-thirds of the cost since it intended to build two tracks.

The Lombardi Gulch fill, from "Plans of Oceanshore RR Co.," 1912.

The San Francisco Construction Company was hired to build the joint railroads from the Santa Cruz city limit at Moore Creek to the cement plant, as well as the Ocean Shore’s extension to Scott Creek. It subcontracted Pratchner & Chadwick to construct drainage tunnels and grade the right-of-way, while Shattuck & Desmond of Los Angeles were hired to build the trestle bridges and fill them. Hunter Bros. of Oakland were recruited to construct the Ocean Shore’s extension to Scott Creek. With speed the new priority, the plan shifted to constructing a single line of rail in order to fulfil the cement plant contract as close to the deadline as possible. It was understood that this line would afterwards become the first of the Ocean Shore Railway’s two tracks. Shattuck & Desmond also held the contract for the Coast Line Railway within the city limits, and it got to work in October to connect the line from the Santa Cruz Union Depot yard to the first meeting point of the two railroads just before the fill over Wilder Gulch, where equipment would be transferred between the two railroads once the line was completed to the plant site.

A double-headed Southern Pacific excursion train crossing the company's trestle over Sandy Gulch, ca 1947. [Courtesy Jim Vail – colorized using MyHeritage]

With all agreements made and contracts signed, construction resumed at a breakneck pace. Work began on the Ocean Shore’s 465-foot-long Sandy Flat trestle in mid-October. The wood for all the trestles came from Oregon via ships that deposited pilings and lumber on Parsons and Laguna Beaches. Steam donkeys installed atop the adjacent cliffs hauled the wood to the railroad grade, where other donkey engines moved it to the work site. This allowed bridges to be constructed quickly, though poorly since they were designed to be used only briefly. Unique among the trestles on the Ocean Shore line, the Sandy Flat trestle was designed to support a double track, since the railroad was contractually prohibited from filling the flat. Despite the design, the bridge likely never hosted a second set of rails since the Ocean Shore failed to install its second track. The Sandy Flat trestle was completed before the end of October, by which point construction crews had already shifted to a 300-foot-long trestle over Lombardi Gulch, the first joint bridge with the Coast Line Railway.

Ocean Shore Railway auditor Ted F. Wurm on right with family members standing on a trestle, presumably over Laguna Creek due to the parallel Coast Road to the right, 1906. [Marvin T. Maynard – Colorized using DeOldify]

Two joint trestles over Little Baldwin Creek and Baldwin Creek at Parson’s Beach—measuring 300 feet and 660 feet respectively—came next and were finished in mid-November. By early December, work was already nearing completion on the trestle over Majors Creek. Indeed, on December 9, the Ocean Shore’s construction train could travel nearly 7.5 miles up the coast to work on the deep cut through the Enright and Scaroni properties. Before work on the 1,100-foot-long Laguna Creek trestle was completed in late December, some bridge builders had already moved north to Yellow Bank. However, grading beyond Yellow Bank proved difficult, and the Coast Line Railway was still stuck in the West Side of Santa Cruz. This meant that neither railroad would be able to ship the first cars of machinery to the cement plant site by the first day of the new year. Fortunately for Southern Pacific and its contract, the cement company was also running behind schedule and had only sent six cars to Santa Cruz. The only realistic option was for all three parties to continue working toward their mutual goals and allow the deadline to pass.

An Ocean Shore Railway construction train atop a bridge near Davenport, 1906. [Western Railroader – Colorized using DeOldify]

In January 1906, the Santa Cruz Sentinel reported that crews were busy boring tunnels through the sandstone bluffs, a necessary step before the trestles could be filled. The Yellow Bank trestle was completed in mid-January allowing crews to move to the last two substantial trestles, over Liddell and San Vicente Creeks. Progress was slowed by heavy rains that hampered construction efforts across the line and caused the trestles at Baldwin and Laguna Creeks to settle. Both were repaired within a week and trackage was extended to the south bank of Liddell Creek by the first week of February. The Liddell trestle was completed in mid-February, even as heavy rains once more incapacitated the now-partially-filled trestles at Baldwin and Laguna Creeks. These rains also delayed completion of the San Vicente Creek trestle, though the track was extended to its southern edge by mid-March. This final trestle was completed the first week of April.

The Baldwin Creek fills at Parson's Beach, from "Plans of Oceanshore RR Co.," 1912.

As the Ocean Shore Railway was wrapping up construction of the first 11 miles of the route, the Coast Line Railway was finally making progress out of Santa Cruz. Construction of the trestle over Moore’s Creek delayed the company for at least a month, while further effort was required to widen and reinforce the fill at Wilder Gulch to allow the two lines to connect. Both the connection of the lines and the completion of the track to San Vicente were completed in the second week of April. This allowed Southern Pacific to finally haul the cement company’s machinery from a long siding on the Moore Ranch to the plant site beginning around April 15, 1906. Seventy carloads of machinery had accumulated on the siding and at the freight yard by this point. However, several factors slowed the delivery of machinery to the plant site, most notably the relatively low strength of the trestles and the fact that there were no sidings or spurs yet at the plant site. This meant that short trains of only a few cars had to continuously shuttle machinery and empty flatcars between Santa Cruz and the plant site, a tiresome and time-consuming process that further delayed construction of the plant.

The Yellow Bank fills and Coast Road realignment, from "Plans of Oceanshore RR Co.," 1912.

Simultaneously, Shattuck & Desmond’s crews shifted focus from bridge-building to bridge-filling. The Ocean Shore Railway had always planned to fill its trestles along the coast—it had little choice since it planned to run two parallel tracks with electrical equipment, which was a lot to ask from a trestle. Thus, all the trestles were relatively hastily built since they were never expected to support heavy or regular rail traffic. After its agreement with Southern Pacific, Ocean Shore expanded its plan to run three parallel tracks, with the Ocean Shore’s two tracks on the ocean side and the Coast Line’s track on the inland side. The width of the fills at the top were expected to be between 36 and 47 feet. Three to four steam shovels were eventually used to accomplish the monumental task.

The long fill over San Vicente Creek, from "Plans of Oceanshore RR Co.," 1912.

The first trestle to be filled was across Baldwin Creek, beginning in early February 1906. At Major’s Creek, an agreement was reached with the Santa Cruz County Board of Supervisors to incorporate the county road into the fill. Doing so eliminated a dangerous curve on the road and bypassed a grade crossing and short overhead railroad bridge. Similar agreements were made at Enright, where the county road was moved inland to avoid grade crossings, and at Yellow Bank, where the highway was redirected away from the fill. In late March, Shattuck & Desmond relocated its camp to Laguna Creek in order to fill the Laguna Creek and Yellow Bank trestles. Only around a third of the trestles had been filled at the time of the San Francisco Earthquake on April 18, which halted further progress for three and a half months. The Coast Line Railway had lain its rails to the south end of the Lombardi Creek trestle, but could go no further.

An Ocean Shore Railway train on a high fill hauling equipment, presumably for the cement plant, circa 1906. [Western Railroader – Colorized using DeOldify]

As work resumed in August, the Coast Line Railway was finally able to begin grading beyond the Wilder property. Its first task was to widen cuts to make space for a second set of rails. This required heavy use of dynamite in some places, which spread debris across the right-of-way and forced the suspension of all passenger and some freight service on the Ocean Shore line. The blasted rubble was transferred to waiting ballast cars, which took the aggregate to the nearest trestle to serve as fill. Making cuts, transferring rubble, importing additional aggregate from nearby quarries and the ruins of San Francisco, and dumping them to create towering fills took a lot of time and energy, leading to further delays. The largest fill across San Vicente Creek just south of the cement plant was 1,400 feet long and was estimated to contain approximately 1,250,000 cubic feet of material, primarily rock and shale.

An Ocean Shore construction train dumping rocks below the bridge over San Vicente Creek, circa May 1907. [Uncertain provenance – Colorized using DeOldify]

The Coast Line resumed laying rails in November 1906 and installed them whenever a fill or cut was ready, leading to piecemeal sections of track across the line that were gradually connected together. The completion of the San Vicente Creek fill in mid-June 1907, followed shortly afterwards by the installation of the Coast Line rails across it, marked the successful end to the joint construction project between the Ocean Shore Railway and Southern Pacific Railroad. Shattuck & Desmond, working for the Ocean Shore Railway on its longer route, constructed several additional fills to the north across Agua Puerca and Molino Creeks and smaller gulches in May and June 1907 before concluding the Ocean Shore’s first phase of construction in Santa Cruz County.

The single surviving Southern Pacific Railroad tracks crossing the San Vicente Creek fill, with the adjacent Ocean Shore line a sandy pathway beside it, circa 1930. Davenport Wharf and a warehouse can be seen in the distance. [Courtesy WorthPoint – colorized using MyHeritage]

The legacy of the joint Ocean Shore–Coast Line construction project to Davenport and beyond is still felt in many places along the North Coast today. For decades, the Southern Pacific Railroad’s wooden trestle over Sandy Flat, built independently sometime in 1906, welcomed picknickers, trainspotters, and photographers before it was finally filled, probably in the 1960s or 1970s. The joint fill at Majors Creek is now shared by Highway 1, while three short Ocean Shore fills north of Davenport have been repurposed for the highway.

The San Vicente Creek drainage tunnel below the former joint Ocean Shore–Coast Line Railway trackage, June 16, 2007, by Jef Poskanzer. [Courtesy Wikimedia Commons]

Beneath every single fill, the original tunnels still drain creeks and lagoons, rarely requiring maintenance despite being over a century old. Though mostly out of use since the closure of the cement plant in 2010, the Southern Pacific Railroad’s former right-of-way, now owned by the Santa Cruz County Regional Transportation Commission, officially remains an active line with tentative plans for reactivation in the near future. Much of the adjacent Ocean Shore Railway right-of-way remains intact and is used by local farmers as a makeshift road, though parts will be repurposed for the planned Monterey Bay Sanctuary Scenic Trail Network.

Citations & Credits:

• Ocean Shore Railroad, "Plans of Oceanshore RR Co.," 1912, based on survey circa 1906.
• Southern Pacific Railroad, maps and plans, California State Archives.
• Various newspaper articles from the Santa Cruz Morning, Evening, and Weekly Sentinel; The Pajaronian; and the Santa Cruz Surf.