In the summer of 1852, a construction worker stood at the bottom of the Appomattox River valley below Farmville, Virginia, laying the lower courses of a stone pier that had already risen thirty feet above the valley floor. It still had more than ninety feet to climb before it reached the height where the wooden bridges of the South Side Railroad would rest upon it. The valley around him was the one the Appomattox River had carved through Virginia’s Piedmont across geological ages. The river ran in a narrow bottom between walls that rose steeply on both sides toward the high ground above.

The walls were covered with the varied hardwood forests that distinguish the interior of Virginia. The air in the valley bottom was cold in the early morning, then trapped against the clay walls by the midday sun, so that heat and humidity accumulated together until the workday ended and the river lowered the temperature again. The pier he was building would be one of twenty-one distributed across the valley floor from the southern bank to the northern. The tallest would reach 125 feet above the river’s surface.

The wooden bridge that would rest on them once the piers were complete would carry the South Side Railroad across an obstacle defined not by width but by depth—a valley carved beneath the track level, the level the railroad had to maintain if the crossing were to function as a train crossing and not a descent into the valley and a climb out of it on every passage. The Appomattox at Farmville was not a difficult river to cross at its channel itself. The channel at the crossing point was moderate in width and depth, fordable in dry season, and bridgeable in all seasons with a structure of modest span. What made the Appomattox at the high bridge one of the most significant engineering challenges on the entire route of the South Side Railroad was not the river but the valley.

Below the surrounding Piedmont plateau surface, the Appomattox ran through a gorge that placed the river’s surface about 125 feet beneath the high ground on both sides, enclosed by slopes so steep that any train attempting to reach the crossing at the required level from either approach would have to cut a mile down to the river and a mile back up away from it, adding 200 feet of elevation change to every train movement across the Appomattox for the entire operating life of the line. The South Side Railroad was 123 miles long. Every grade obstacle within its route affected the freight and passenger economics the railroad was created to serve. Any crossing that imposed climbs and descents of that magnitude on every train using it would reduce the railroad’s operating capacity across that section in ways no later improvements in equipment or track could repair, because the inefficiency lay in the geography itself.

The South Side Railroad’s engineers measured the levels across the Appomattox Valley at Farmville, and those levels told them what the crossing required. It required height. The South Side Railroad had been chartered by the Commonwealth of Virginia in 1846. Its route ran from Petersburg, Virginia’s second-largest city and the commercial gateway for the tobacco counties of the south side, westward to Lynchburg, Virginia’s interior market where goods coming from the Richmond commercial system connected with valley traffic heading south and west.

The 123 miles of South Side trackage crossed terrain that was acceptable by the standards of the Virginia plateau, until it reached the Appomattox Valley at Farmville. The Appomattox at that location was not manageable the way the rest of the route had been. It was the one place on the entire line where the plateau ended, where the grade and alignment the engineers had managed to maintain across the Piedmont plateau descended into a valley system that would break the grade without a structure of extraordinary scale. The South Side Railroad was not among the largest railroads in Virginia.

The Central Virginia and the Richmond & Danville were larger and better capitalized. But for the counties between Petersburg and Lynchburg, the South Side was the essential railroad—the only connection the tobacco, grain, and livestock economy of those counties had to the markets and ports they depended on. The crossing at High Bridge was the single most important engineering commitment the South Side Railroad made while building its line. The engineering department knew from the survey stage what they would be required to build there.

The question facing the engineering department in the late 1840s, when the route surveys were complete and the alignment fixed, was not whether to cross the Appomattox at great height. The route had already determined that. The real question was what material would be used for the crossing. Wooden construction was faster and cheaper in initial capital than any stone alternative, and it required no quarrying operations or kilns near the site.

Wood was the dominant material in American railroad bridge construction through the 1830s and 1840s, and the bridge carpenters and timber framing systems developed across those decades were available and understood. The objections to wood at High Bridge’s scale were the same that applied to wood in any major railroad crossing. Wood rotted under the pressure of loads and weather, and required rebuilding at intervals. The railroad’s operating budget would have to account for that across the entire operating life of the line.

At the height of the high bridge piers, replacing a decayed timber span meant working at elevations that increased the cost and difficulty of every construction operation, making the financial saving of wooden construction over masonry secondary. The initial cost mattered less the higher the structure stood above the ground. Iron was available, and iron could carry the loads. But the American iron-forming industry in 1848 and 1849 was concentrated in the northeastern states.

The cost and time of obtaining manufactured iron components for a construction site in rural southern Virginia was a constraint the South Side Railroad’s finances could not easily bear at the pace the construction schedule demanded. What the Virginia Piedmont possessed in abundance was clay. And what clay became when properly fired in kilns erected near the construction site was brick. And what brick, well bonded with hydraulic mortar and proportioned for the compressive loads the structure would impose on it across an operating life extending beyond any practical planning horizon, could achieve was what the Thomas Viaduct had been doing at Relay since 1835, and what the Roman-era tradition of stone arches had proven in aqueducts and bridges still standing at their places of construction for 2,000 years.

The High Bridge piers were to be brick construction. The superstructure above them would be wooden Howe trusses, adjustable in service and replaceable at the end of their useful life, resting on stone piers the South Side Railroad intended to build once. The brick for the piers was fired from clay deposits along the Appomattox Valley in kilns erected near the construction site. Firing brick on site was the standard solution for large construction projects located far from brick suppliers, and the clay deposits of the Virginia Piedmont were readily accessible to the construction site to support the kiln output the pier-building program demanded.

The kilns produced brick in the quantities the construction schedule required, and the brick was moved from the kiln yards to the work sites at the base of each pier by cart and by hand across the valley floor. The pier’s geometry tapered from a massive cross-section at the base, wide enough to distribute the concentrated loads of the iron bridge above across a foundation area the valley floor geology could support without uneven settlement, to a narrower section at the top where the wooden spans rested on the masonry. This taper served two structural purposes. It reduced the dead weight the pier itself imposed on its foundation as it gained height.

It preserved the structural capacity to carry the live loads of trains above by keeping the compressive stress on the masonry within the required range. The combination of brick and mortar could withstand the repeated loading cycles across an operating life the designers planned in decades rather than years. The bond pattern—the arrangement of courses tying the facing brick to the backing courses and distributing compressive load across the full cross-section of the pier—was the decisive quality variable in this type of construction at this height. A properly bonded pier was a homogeneous compression member, its mortar joints structurally invisible because every joint was fully loaded in compression and the entire cross-section worked as a unit.

A pier with voids in the interior backing courses or weak joint fillers in the facings would show signs of deterioration over time, as the railroad’s loading cycles found any bond-failure gaps and worked them. The bricklayers at High Bridge did this work under the supervision of foremen whose judgment of quality was the standard by which the piers would serve the railroad as long as they stood. As the piers rose above the first scaffolding, working conditions changed in the specific way they change when a working surface rises above the fixed landmarks of the surrounding landscape. Below forty feet, a bricklayer had the valley walls and the hardwood canopy as spatial reference, and the valley floor was close enough that the body adapted to the height as a daily working condition.

Above sixty feet, the tree canopy dropped below the work scaffolding at the tallest pier locations. Above eighty feet, the valley walls on both sides were below the scaffolding. Above one hundred feet, the working platform stood above the fixed terrain of the valley floor, and the bricklayer laying mortar and leveling brick on the line worked in the open air of a Virginia summer, with the river a hundred feet below the platform’s edge and nothing between him and the full drop but the scaffold planks he stood on and whatever wooden railing the construction company had placed at the platform’s edge. The loads moving through the temporary structures up to the working level—the brick platforms and mortar tubs swinging on ropes, the wooden hoisting equipment—were the hazards the men who received and guided them knew the way they knew the characteristics of the tools they used every day.

The construction company’s accounts record the progress of work on the piers. They do not record the conditions as they were faced by the men who worked them. The workforce that built High Bridge occupied a different place in the labor economy of Virginia’s Piedmont than the workforce that built the Rockville Bridge in the Susquehanna Valley fifty years later. At Rockville in 1900, the heavy construction labor force consisted of men from southern Italy and Sicily, organized through the padrone system, an intermediary contractor standing between the worker and the wage, taking his share before the remainder reached the worker.

At High Bridge in 1852, the prevailing form of construction labor in the Virginia Piedmont was not the immigrant worker organized through a contractor who collected the wage and paid out a remaining portion. It was the enslaved worker hired out through the leasing system that Virginia’s plantation economy had developed over preceding generations as a mechanism for employing forced labor in the wage-labor markets required by railroad, canal, and quarry construction operations. The hiring system worked as follows. A Virginia planter who owned enslaved workers with skills or physical capacity beyond what his agricultural operations required in a given season could lease those workers to a construction company or a railroad.

The construction company negotiated the wage rate with the planter. The planter received the wages. The worker received no money, because the legal structure of Virginia in 1852 did not permit an enslaved person to hold wages. What the worker received was continuation of the living conditions the lease contract described in terms broad enough to give the construction company the operational flexibility it needed, and specific enough to give the planter the assurance that the person he owned would return at the end of the lease period in a condition that allowed him to be worked again.

The lease contract bound the construction company to the planter. The enslaved worker was the subject of the contract, not a party to it. The South Side Railroad’s hiring ledgers survive in part in the Virginia archives. Planters appear in those ledgers by name, with the number of workers they supplied and the monthly rate the railroad paid.

The individual workers supplied by those owners appear in the ledgers at the level the hiring economy required for financial tracking—a total count at the applicable rate per month. Some individual names appear in the records at the level required by the planter’s own farm accounts to track his workers as productive assets. In most cases, the total count is what the financial record preserved. The men who mixed mortar on the floor of the Appomattox Valley in the summer of 1852, carried it up the scaffolding to the working level, set each brick into its bed of mortar, checked the courses for alignment, and moved to the next course appear in the South Side Railroad’s construction accounts as a labor cost at the rates set by the hiring contracts.

They appear as a cost. They appear as a line in a ledger designed to track payments to the planters who supplied them. Rarely do they appear as men. The Irish laborers who worked on High Bridge construction alongside the hired workforce possessed legal status as free men.

In a sense, the hired workers did not—they were paid in cash and directly rather than having someone else collect for their work. The practical gap between the economic circumstances of a free Irish laborer at a railroad construction site in rural Virginia in 1852 and those of a leased enslaved worker at the same site was real and significant in the dimension of how each group appeared in the surviving construction records. That distance was smaller. The Irish laborer, whose job level fell below the level of foreman, appears in the South Side Railroad’s payroll records at the level required by accounting to track labor costs.

The documents recorded only what accounting required. Below the level of foreman, men appear in those records as a cost of labor. The construction seasons at High Bridge were governed by the temperature requirements for hydraulic mortar to set on one hand, and the heat of a Virginia summer on the other. The Appomattox Valley in July and August traps heat the way river valleys in mountainous and hilly terrain do.

The walls trap summer air in the gorge, and the river’s moisture keeps humidity in contact with the stone, the clay, and the scaffold platforms. The direct sun reflected off the brick surfaces at the upper levels of the piers added a radiative heat load to the ambient temperature in the valley bottom, something the construction records were not required to document. The pier construction continued through those summers at the rate the setting schedule allowed. In winter, brickwork stopped.

The colder months saw carpentry, ironwork, and preparation of materials for the next season. The two construction seasons required by the pier program were Virginia construction seasons, bounded at their start and end by conditions, materials, and weather. When the last pier reached its designed height and the bridge carpenters began installing the Howe truss spans between the pier tops, the structure the South Side Railroad had built across the Appomattox Valley became visible in its full extent from the high ground above the valley’s edge on both banks. Twenty-one brick piers rose from the valley floor to heights ranging from forty to 125 feet depending on their position in the valley’s cross-section, carrying a wooden superstructure of Howe truss spans across a total bridge length of about 2,400 feet.

The bridge deck stood 125 feet above the Appomattox River at the deepest part of the valley crossing. No railroad bridge then in service in the United States carried its deck at that height and that length of crossing. The structure was exceptional in its specific dimensions of height and length in American railroad bridge construction in 1854. And it was an achievement built by a regional, moderately capitalized railroad serving the tobacco counties of rural Virginia, because the valley at Farmville left the engineers no alternative to the scale the design required.

The first trains to cross High Bridge confirmed what the engineering analysis had established. The piers carried the weight without settlement. The wooden spans carried the loads of the South Side’s locomotives without any damage appearing in their frames. The track held its alignment across the valley according to the line the engineers had laid out.

The crossing worked. What the bridge carried over the next decade was the agricultural traffic of the South Side counties—tobacco, grain, and livestock moving east toward Petersburg, and goods and materials of the eastern commercial economy moving west into the interior. The South Side Railroad was not Virginia’s busiest. But it was the only railroad connection the counties it served possessed, and the bridge the bricklayers and Irish laborers had raised across the Appomattox Valley was the only significant crossing for the traffic that needed to pass.

By 1861, the nature of what High Bridge carried had changed in ways the railroad’s original shareholders had not anticipated. By 1864, the South Side Railroad had become a supply corridor of military importance in a war that made the railroads of interior Virginia vital to the survival of the Confederate Army of Northern Virginia, operating from its defensive lines around Petersburg and Richmond. The railroad built to carry tobacco was carrying ammunition, provisions, and troop reinforcements along the western axis of the Confederate supply system. High Bridge was the crossing point on that axis.

Every train supporting the Confederate supply line west of Petersburg crossed the Appomattox Valley over the piers the bricklayers had raised in the summers of 1852 and 1853. The structure had been built originally for a regional freight economy. It now functioned as a military asset whose loss would directly affect the operational capacity of an army of 80,000 men. On the morning of April 6, 1865, a column of Union cavalry under Brigadier General Theodore Read moved ahead of the pursuing Union infantry with orders to destroy High Bridge before the retreating Army of Northern Virginia could use it.

The Confederate withdrawal from the Petersburg lines had been underway since the night of April 2. Lee’s army was moving west along the South Side Railroad corridor toward Lynchburg and the supplies Lee had been told awaited him at Appomattox Station. The army moving along that corridor needed the crossing at High Bridge. Without the bridge, the retreating forces would have to descend into the Appomattox Valley, cross the river, and climb back out, adding hours and miles to a movement already under rear-guard pressure and short of the supplies that had run out at the Petersburg lines.

Read’s cavalry reached the approaches to High Bridge on the morning of the sixth. Confederate infantry, placed by Major General William Mahone to cover the withdrawal, engaged Read’s force before it reached the bridge and forced it back. The engagement was brief. Read was killed in the fighting.

The Confederate rear guard held the bridge approaches long enough for the main column to begin its crossing. The Army of Northern Virginia crossed High Bridge on the evening of April 6 and into the morning of April 7. The retreating column used both the railroad bridge and the parallel wagon bridge in the valley bottom to move infantry, artillery, and wagon trains across the Appomattox River. When the Confederate rear guard cleared the northern bank, army engineers set fire to both bridges.

The wagon bridge lost four spans to fire before Union engineers reached the southern bank and worked to extinguish it. The railroad bridge was set alight at its southern end. The fire spread through the dry wooden truss structure and burned several spans before it was brought under control. The fire damage was limited to the timber.

The brick piers beneath the burned spans were unaffected. They had carried the weight of an army crossing under military pressure and held while the structure above them burned. When the flames went out, the piers stood as the bricklayers had built them in the heat of an Appomattox Valley summer twelve years earlier. Union engineers assessed the damage and made the crossing passable for the pursuing Union infantry.

The Union army crossed High Bridge on April 7. Lee surrendered at Appomattox Court House on April 9. The brick piers of High Bridge had been tested through the most intense forty-eight hours in their history and showed no sign of failure. The South Side Railroad was repaired after the war and returned to service.

The damaged timber spans were replaced with improved structures. The brick piers, inspected after the fire and found structurally sound, continued in service as the base for the rebuilt bridge and the subsequent superstructure replacements required by the railroad’s needs over the following decades. The South Side Railroad was merged into the Atlantic, Mississippi and Ohio Railroad, and those lines became part of the Norfolk and Western Railway in 1882. Norfolk and Western operated the High Bridge crossing throughout the next century, replacing the wooden, then iron, then steel superstructures as loads increased and materials aged.

The brick piers built in 1852–1853 continued to carry everything the railroad placed above them. The engineers who designed them in the late 1840s had provided them with extra load capacity—a practice followed by construction engineers of that era when the tools for precise load calculation were less developed than the risks of miscalculation required. That extra capacity enabled the piers to survive the transition from the light locomotives of 1854 to the heavier steam equipment of the postwar decades, up to the heaviest freight locomotives. Norfolk and Western continued operations across its network through the twentieth century.

Without structural failures of the kind a less conservative design might have produced, the company eventually rationalized its line, and the High Bridge crossing was retired from active railroad service. Ownership of the structure passed to the Commonwealth of Virginia. The brick piers the South Side Railroad originally built now carry the High Bridge Trail, a pedestrian and bicycle path operated as a state park, crossing the Appomattox River valley at the same height the railroad engineers chose in the 1840s. If you walk that trail, you cross the valley above the piers the bricklayers raised.

The crossing is about 2,400 feet from one bank approach to the other. The Appomattox runs 125 feet below the trail surface at the center spans. The valley walls are the same walls the construction crews worked between in the summers of 1852 and 1853. The interpretive signs along the High Bridge Trail record the battle of April 6, 1865, the events of Lee’s retreat, and the Union pursuit that ended at Appomattox Court House three days later.

They record the South Side Railroad’s role in the Confederate supply system during the war years. They record the structural history of the crossing and the successive generations of structures the railroad placed atop the original piers. They record the route engineering and the railroad company that contracted the construction. The Virginia planters who supplied the hired workforce appear in the South Side Railroad’s financial records at the level the contracting system required to record financial transactions between parties with legal standing.

The workers those contracts supplied appear in the construction records at the level the hiring economy required to track the total cost of the labor provided. The planters’ names exist in the records because the records tracked payments between property owners. The workers’ names exist in those records at the level the system required to account for them as a cost element of the piers. The surviving construction records of the South Side Railroad, preserved in the Virginia archives, reflect the accounts of the hiring system at the level that system’s operation required.

Whether the time records of the work crews, which would have contained the names of individuals below the level of supervisors, were preserved in their original form and remain accessible in the archives holding the South Side Railroad documents, is a question the engineering histories of the High Bridge structure have not addressed fully in public. The piers are documented. The engineering is documented. The planters’ transactions are documented at the level financial accounting required.

The men who did the work appear in those accounts as a monthly cost at the rate the hiring contracts set. The brick in the High Bridge piers has stood in the Appomattox Valley for 170 years. It is the same brick the workers laid in the summers of 1852 and 1853. A brick pier, properly bonded with hydraulic mortar to precise compressive specifications, retains no trace of the hands that built it.

It retains only the evidence of the quality of the bond and the mortar. The piers at High Bridge have provided that evidence across 170 years of service under train loads beyond what the engines of 1854 imposed, across the forty-eight hours in April 1865 when the structure itself bore the weight of two armies and the fires of a withdrawing rear guard within hours, across floods and freeze-thaw cycles in the Virginia Piedmont, across a century and a half of seasons. The evidence the piers provided is evidence of work done with precision by people who understood what they were building and constructed it to a standard the materials have not refuted since. The trail runs across the valley above what they built.

The signs on the trail record the battle, the railroad, the crossing operation. The men who laid the brick appear in the South Side Railroad’s account books as a labor cost for the piers. They are in those books in the way the accounting conventions of the hiring economy required. They are not in those books as people who built the tallest and highest railroad bridge in the United States in 1854.

The piers are still there. The valley is still there. The river still runs 125 feet below the bridge deck on a summer afternoon, exactly as it ran beneath the scaffolding in the summers before the bridge existed. The brick is the brick they laid.

The record of who laid it exists in the accounts at the level the system required. It is not in the accounts at the level that puts a name on a commemorative plaque.