In October 1900, a framer stood on a platform above the Saint John River in Carleton County, New Brunswick, and drove a wooden peg into a hole he had bored through two crossed planks of white pine, down into the timber below. The peg was a tree nail. About an inch in diameter and eight inches long, it had been cut from hardwood so that it would swell when wet and lock the joint tight without a single piece of iron. He had been driving tree nails since before the sun cleared the hills east of the river.
The water thirty feet below ran fast with its October current, before the ice came down from the upper watershed. The planks he was fastening formed the lattice of a truss bridge that would one day carry the weight of horses and wagons, and later machines he could not imagine and neither could the engineer who drew the plans. He could see the structure on either side of him stretching across the river toward the far bank. The truss openings gaped open to the sky, and the scaffold planks ran the length of each span between the piers.
Other men performed the same motion at intervals across the growing bridge. He would do it again before the light failed. He had been doing it for weeks, and he would keep doing it for weeks more. That tree nail he drove that morning is still in place 124 years later.
The Hartland Covered Bridge over the Saint John River in Hartland, New Brunswick, is the longest covered wooden bridge in the world. It has been the longest covered wooden bridge in the world since its completion in 1901. It has carried traffic in both directions across the Saint John for more than a century. It carried horses and wagons and the first automobiles that reached Carleton County in the years after 1910.
It carried the farm traffic of the Saint John River valley through two world wars, the Depression, the flood seasons of 1923 and 1936, and every spring ice breakup since. It is 1,282 feet long. It is still in service today. This is the story of how the farming communities on either side of the Saint John River at Hartland built the longest wooden bridge in the world.
It is the story of the framers who drove tree nails into the truss lattice above a river in flood. It is the story of the men who sank the pier foundations into the bed of a river that the Saint John reshapes every April. It is the story of why a bridge built without a cover in 1901 was given one in 1921, and why that decision is the reason the bridge still stands. It is the story of a county whose economy was built entirely on the craft of working wood, where that economy was dying in 1900, and where the men driving the tree nails were the last generation trained in a trade that the timber commerce and the shipyards had built and the iron age had ended.
To understand why the people of Hartland needed a permanent crossing over the Saint John at the end of the nineteenth century, you have to understand what the Saint John River is and what it does to the communities along its banks for about four weeks every spring. The Saint John drains a basin of roughly 22,000 square miles across northern Maine, western New Brunswick, and southern Quebec. The river runs about 418 miles from its headwaters near the international border to the Bay of Fundy at the city of Saint John, falling through the agricultural heart of New Brunswick before reaching the coastal plain and the reversing tidal falls that give the city at its mouth its distinction. At Hartland, about halfway along its course, the river is a mature stream about 400 feet wide between its banks at low water, running over a bed of ledge and gravel with a gradient that produces a steady current free of the rapids found upstream.
In summer, when levels drop, it is navigable by boats and flat-bottomed canoes. It is a manageable river in August. In April, it becomes a different river entirely. Snow accumulates in the Saint John basin from November to March.
It piles up in the upland forests, on the frozen surfaces of the lakes that feed the tributaries, and on the river itself, which freezes over in most winters from December to late March. In April, when temperatures rise above freezing, Atlantic rains arrive, and the snowmelt across the whole basin accelerates at once, all that water flows toward the river at the same time. The Saint John at Hartland rises in the first week of April in an ordinary year by ten to fifteen feet above its low-water level and spreads across the lowlands on both banks. In a year of heavy winter snow followed by an early warm rain, it rises higher.
In 1923 the spring flood reached levels that closed county roads, inundated farmland that had been worked for four generations, and destroyed buildings raised on ground that the families who built them believed was out of the river’s reach. In 1936 the flood came again at similar levels. It has come every April since. Before the flood comes the ice.
The Saint John freezes in December in most years, starting at the edges and thickening toward the center until the river surface is a road in January and February. Farmers crossed on foot or with horses and wagons in the deep winter. Children crossed to reach school on the opposite bank. Mail and goods moved over the ice.
The ice road was reliable in the coldest winter weeks and unreliable early and late in the season, dependent on temperatures and subject to sudden changes that could make the crossing safe on Tuesday and dangerous by Thursday. The ice broke up in late March or early April. The breakup moved downstream from the headwaters, where the ice gave way first in the warmer reaches and sent ice downstream toward the still-frozen lower river in sheets and blocks that piled against the lower ice and then surged forward in sudden water pressure when the lower ice gave way. The ice run on the Saint John in the late nineteenth century was no small event.
The river carried blocks of ice weighing tons. Some were large enough to capsize a flat-bottomed boat caught among them. All of them moved at the speed of the river flowing toward the bay. Between the ice road of February and the navigable river of May lay a stretch of weeks when neither crossing was reliably safe.
The river was too broken for the ice road and too full of running ice and strong current for the ferry. Carleton County at the end of the nineteenth century had a ferry crossing at Hartland. The ferry crossed when the river allowed it. When the river did not, the crossing waited.
Farmers with goods for market on the other bank waited. Children who needed to reach school waited. The mail was irregular. Produce piled up.
Weekly newspapers arrived late. A doctor on the other bank was out of reach. The waiting was not a passive inconvenience. It was a recurring economic cost spread across every farm, household, and business in the valley that depended on ease of movement between the banks for more than nine months of the year.
The case for a permanent bridge at Hartland had been raised in county council chambers, in the New Brunswick legislature, and in the local newspapers for longer than anyone working in those bodies in 1895 could precisely recall. A permanent bridge across the Saint John required money the county alone did not have. It required provincial support that the county allocated according to its own priorities, and an engineering solution that could withstand the ice run and the spring flood without being destroyed in its first year. The wooden truss bridges the county had built over the small rivers of interior New Brunswick suited small rivers.
The Saint John at Hartland was not a small river. The provincial charter for the Hartland bridge was issued in the late 1890s. The contract was let. Work began.
The engineering design chosen for the Hartland crossing was a multi-span wooden lattice truss bridge. The Town lattice truss was not new technology in 1900. Ithiel Town had patented it in 1820 and built a long record of reliable performance across the northeastern United States and the Canadian Maritimes over the following eighty years. Town’s core insight was that the diagonal lattice of a truss could be built entirely from standard-dimension planks without the massive main timbers that earlier truss designs required.
Where a Howe or Long truss concentrated load in a relatively few heavy wooden members, the Town lattice distributed load across a very large number of lighter planks. The lattice diagonals ran at about 45 degrees from the lower chord to the upper chord, crossing the opposite diagonal plank at every intersection, and were pinned at each intersection with a tree nail. The design could be built by timber framers without specialized training in structural engineering. It could be repaired with the same materials and tools used in its construction.
It was economical in its use of timber. It was the natural choice for a county whose craftsmen were woodworkers. The crossing at Hartland required seven spans across the full width of the Saint John between its flood banks. The spans were not equal in length but were fitted to the pier positions that engineers determined by sounding the riverbed.
Each span averaged about 180 feet between pier faces. The total structure measured 1,282 feet from entrance to entrance. A 180-foot Town lattice truss carried its load through the accumulated stiffness of hundreds of diagonal plank intersections, each in tension or compression, each depending on the tree nail connection to transfer its load to the adjacent member. The mathematics of a lattice truss of this size had been developed by engineers across the region for decades.
The behavior of the design under the particular conditions of the Saint John—flood and ice loads, the live loads of horse-drawn freight wagons, and eventually motor vehicles—required the engineering judgment of whoever drew the plans for the Hartland crossing. The engineer responsible for the Hartland bridge is documented in New Brunswick’s provincial records. Whether that name is prominent in the heritage literature of the structure or falls into the category of engineering decisions traceable only through archival research is a question the Fredericton archives answer more fully than the tourist brochures at the bridge entrance. The pier foundations were the engineering problem on which the survival of the bridge depended.
The Saint John at Hartland at low water runs over a bed of ledge and gravel that looks stable to a farmer crossing it in August. The river in flood is not the river of August. The spring flood scours gravel from around any obstacle placed in the current and deposits it downstream where the current velocity drops below what is needed to carry it. A pier foundation resting on gravel the flood can move is a foundation the flood will eventually undermine.
A foundation built to withstand the spring flood must rest on ledge beneath the gravel or be driven deep enough into stable gravel that scour around its perimeter cannot reach the base of the footing before the flood recedes and the disturbed material settles again. At each pier site the engineers had to determine the depth and character of the bearing material. Where ledge could be reached, the foundation could rest on rock. Where the alluvial material was deep, the foundation required decisions about the depth and density of the gravel and the maximum depth of scour a major flood could produce in the material surrounding the pier.
The cofferdam method used by the work crews at Hartland was the method river-bridge builders across North America had used for pier work in water throughout the nineteenth century. Timber planks were driven around the perimeter of the pier site, the water inside the enclosed space was pumped or bailed down to the bearing surface, excavation proceeded to that surface, the footing was placed, and the pier was built on top of it before the return of flood season. Timing was the governing constraint. The Saint John reached its lowest levels in late summer.
The construction season for in-stream pier work began in July or August and ended when fall rains began raising the water in October. Frost came in November. The flood came in April. The construction window for foundation work in the river was no more than four months in a favorable year.
The men who worked inside the cofferdams at Hartland in the autumns of 1899 and 1900 worked in conditions dictated by the New Brunswick climate of October on any work done in or beside the Saint John. The water seeping through the planks into the cofferdam was cold. October temperatures in New Brunswick drop to freezing before dawn. The foundation work at the bottom of the excavated cofferdam was done by men working in standing water that the pumping crews drew down as fast as they could, knowing the river was pressing on the timbers from the other side.
The gravel and sand they removed from the excavation was raised in buckets. The concrete or masonry of the footings was lowered and placed by hand. A cofferdam that failed against the river current, that shifted its planks or opened a gap along the river bottom, flooded. The men inside got out.
Whether they got out in time is not recorded in the publicly available accounts. The foundation work was completed. The piers still stand in the river today where they were placed in 1899 and 1900. The floods of 1923 and 1936 tested them at levels the engineers of 1898 had not directly measured, and the foundations did not move.
The men who built the wooden superstructure of the Hartland bridge came from the timber economy of Carleton County and the wider Saint John River valley in 1900. To understand who they were and what they knew, you have to understand what New Brunswick’s timber economy had been for the eighty years before these men drove tree nails into a lattice above the river, and what it had become by the time they did. New Brunswick in the first half of the nineteenth century was one of the largest timber-producing regions in the British Empire. The British timber trade, redirected toward British North America during the Napoleonic Wars when the Baltic supply was cut off by naval conditions in the North Sea, built an economy in New Brunswick organized entirely around producing squared timber for the British market.
White pine, yellow birch, and spruce from the uplands above the Saint John valley were cut by loggers in winter camps, driven down the tributaries on spring freshets to the main river, squared to export dimensions by broadaxe men working on the riverbanks, loaded on timber ships at Saint John, and sent to the timber yards of Liverpool and Bristol. The trade was enormous. At its peak in the 1840s and 1850s, the port of Saint John was one of the largest timber-shipping ports in the world. The men who worked in the woods, drove timber down the rivers, and built ships in the Saint John system developed over several generations a body of knowledge about working large timber that was specific to the forests, rivers, and crafts of the Maritime east.
They knew how to fell a white pine without shattering its trunk on frozen ground out of season. They knew how to hew square timber precisely with a broadaxe on a chalk line. They knew how to frame huge timbers with mortise-and-tenon joints and pin those joints with tree nails, because wooden shipbuilding demanded exactly that knowledge, and the shipbuilding industry of the Saint John had for decades been one of the largest wooden shipbuilding industries in the world. By 1900 the trade that built those skills was over.
The white pine of the upper watersheds had been cut to the limits of commercial feasibility. The British timber market had turned again toward Scandinavia and toward iron and steel construction that required no structural wood at all. New Brunswick’s shipbuilding industry, which had launched hundreds of wooden sailing ships from the yards of Saint John, Fredericton, and the smaller yards at Gagetown, Jemseg, and the upriver towns, had been killed by the shift to iron and steel hulls and steam engines that the wooden yards could not retool to build at competitive cost. The last great wooden ships left the Saint John yards in the 1880s.
By 1900 the yards were silent or gone. The men whose fathers and grandfathers had built those ships were working in other trades, in the remaining logging operations, or in the service economy of a county whose industrial base had contracted sharply since Confederation. The carpenters who drove the tree nails into the Hartland bridge in the fall of 1900 were, in some cases, the direct descendants of the men who had used the broadaxe in the riverside timber yards and the caulking iron in the shipyards. They were applying to a permanent highway bridge the skills that New Brunswick’s timber economy had spent eighty years developing and that the iron age had rendered commercially obsolete in the decade before they built this bridge.
The knowledge of how a tree nail behaves in a pinned joint, how it swells with moisture to tighten, how a lattice plank transfers its diagonal load to the next member at each intersection, was in their hands through a craft tradition that had shaped working life in the Saint John valley since before any of them was born. Whether these men came from the Irish communities that settled the valley after the famine migrations of 1847, which brought tens of thousands of Irish immigrants to New Brunswick in the worst famine years and permanently changed the county’s labor economy and social geography, or from the Acadian communities whose families had been in the river valley for generations before the expulsion of 1755 and who returned in the following decades to rebuild their presence in Carleton County and the upriver parishes, or from the loyalist Protestant families whose connection to the Saint John dated to the arrival of United Empire Loyalists from the American colonies after 1783, or from the Wolastoqiyik, whose relationship with the Saint John predated every European arrival by thousands of years, is a question the Hartland bridge construction accounts answer at the level the records of 1900 preserved. The name of the superintendent appears in the engineering correspondence that refers to him. The timber framers and cofferdam workers below the level of superintendent appear, if they appear at all, in the aggregate form kept by the payroll books of 1900.
This many men, this many days, these rates, a total cost. The men whose daily labor assembled the structure exist in those books as an amount of money. They do not regularly exist in those books as individuals with names. The physical conditions of the Hartland bridge site in the fall of 1900 were the conditions of a New Brunswick river crossing in the last construction season before the river froze.
The Saint John at Hartland in October is cold. The water temperature drops toward four degrees Celsius in October and toward freezing in November. A man who fell into the river in October from the work platforms above the truss faced water that would incapacitate him within minutes. This was not a theoretical consideration for the men working on the scaffold planks that extended from the growing truss over the water.
The scaffolds were planks nailed to cross-braces extended from the truss structure. The planks were wet from the morning fog that lay over the Saint John valley until mid-morning in October. They were slippery with early frost, dried and became less slippery by mid-afternoon, and turned slippery again if the afternoon cooling was sharp. A man who slipped on the scaffold at mid-span of a 180-foot truss fell thirty or forty feet above the river.
Whether the river below was deep enough at that point to receive him without exposing him to the gravel bottom varied with the September water level, which varied with summer rainfall, which the construction schedule did not take into account. The tree-nail work followed a rhythm. A lattice plank was placed in position to cross the opposite diagonal. The carpenter bored through both planks into the timber below with a hand auger, following the angle of the pattern imposed by the geometry of the truss.
The tree nail was cut to length, its tip slightly tapered to ease entry into the hole. The carpenter drove the nail with a wooden mallet, and with each blow it sank until it was flush with the face of the plank or slightly proud of it. Then he moved to the next intersection. On a 180-foot Town lattice truss, the number of tree-nail intersections ran into the hundreds.
Across the seven spans, the number of tree nails ran into the thousands. The work was not skilled in the sense that required years of training. It was skilled in the sense that it required judgment to know when a nail seated correctly and when it did not, and the discipline to bore the holes accurately and drive the nails fully rather than rushing the job. The timber for the Hartland bridge came from the forests of Carleton County in the upper watershed.
In 1900 New Brunswick still had commercial quantities of softwood in the uplands away from the river valleys that had been cut over earlier. White pine suitable for the main members and spruce suitable for the lattice planks were cut the previous winter in Crown timber lands north of Hartland, hauled to the river on winter sled roads, then driven down with the current in spring to the sorting boom at the Hartland wharf. The sawmill converted the logs to the dimensions the bridge required. The lattice planks were cut to consistent width and thickness.
The main timbers were cut to the dimensions the engineer specified. The quality of the raw material determined the quality of the structure. Timber with large knots in the wrong places, or with checks indicating internal stress from improper drying, was returned to the mill or re-graded for uses that did not carry structural load. The supervisor at the timber yard knew what the lattice planks, loaded in diagonal tension, had to be free of in order to remain sound for twenty or thirty years above a river in flood.
The timber that did not meet that standard was not used in the truss. The Hartland bridge opened to traffic in 1901. The horses and wagons that crossed it for the first time in the spring or summer of that year crossed a structure open to the sky above the deck. There was no roof.
There were no protective sides. The truss lattice rose on both sides from the lower chord to the upper chord, and the upper chord was exposed to rain, sun, and frost. This was not unusual for the time and place. Covered bridges required extra materials, extra labor, extra cost, and extra dead load on the truss.
Whether to cover a wooden bridge or not was a decision the county or state made by weighing the cost of the cover against the extended service life it provided. The argument for covering was obvious to anyone who had watched an uncovered wooden bridge deteriorate. A bridge exposed to direct weather lasted a decade or fifteen years in a climate like New Brunswick’s before its structural timber needed replacement. A covered bridge lasted decades longer.
The cost of the cover at construction was a fraction of the cost of rebuilding after ten years. In 1901, the county and province spent what they had spent to get a permanent crossing at Hartland. The cover was deferred. The uncovered bridge deteriorated at the rate uncovered wooden bridges deteriorate in the Saint John valley.
Rain wet the main timbers and the lattice planks. Summer sun dried them. The freeze-thaw cycles of a New Brunswick winter pushed moisture into the wood and out of it, into the tree-nail holes and around their pins, every season. Timber subjected to wetting and drying, freezing and thawing, season after season, cracks on its surface, allowing water into the checks and deeper toward the heart, which begins to soften from internal moisture.
The tree-nail joints, properly seated in 1900, began to loosen inside their holes as the surrounding wood moved. The diagonal planks, straight and sound in 1901, began to develop surface checks and end wear, evidence that the wood was losing the internal integrity on which its structural role depended. By 1918 or 1919 the provincial authorities responsible for the Hartland bridge faced a decision that had been predictable since the day the cover was deferred. The bridge needed substantial intervention.
The question was what form that intervention should take. The argument for covering came from men in Hartland and Carleton County who, through observing wooden structures in the river valley, knew what a roof and siding did to extend the life of wood. The covered bridges still standing in the county, some dating to the 1870s, demonstrated concretely what the covering argument claimed in financial terms. The uncovered bridge built in 1901, deteriorating for about twenty years, needed either systematic rebuilding of its damaged parts or the protection that would keep the remaining sound wood from following the damaged parts toward replacement.
The county approved the covering in 1921. The work was done in 1921 and 1922. A roof was built over the full 1,282 feet of the bridge deck. Wooden siding was hung on the sides of the truss with openings cut into the planks to admit light and airflow.
The men who came to Hartland in 1921 to add the cover were not the same men who had built the bridge in 1900. Twenty-one years had passed. The builders who had driven tree nails in the October cold above the river had aged into their forties and fifties, or moved away, or died in the intervening years. The workforce of 1921 was a different generation working on a bridge they had not built themselves.
The tree nails they added in 1921 sit beside the tree nails of 1900 in a structure that does not visually distinguish between what was built in original construction and what was added in restoration. The bridge carries the work of both generations without marking which belongs to which period. What the covered Hartland bridge has carried for over a century since its cover was completed in 1922 is the full history of traffic in the river valley, the permanent crossing that has bound the valley together through every April flood and every winter ice season since. The spring flood of 1923 was the first major test of the covered bridge on a scale that approached or exceeded the design assumptions for the pier foundations.
The Saint John rose in April 1923 to levels that closed county roads at both approaches, flooded the low farm fields on the west bank for miles, and put water over installations along the river that had not been flooded within living memory. The floodwater rose against the pier construction, pressed on the cutwaters, and moved behind the piers at velocities that swept riverbed gravel around the footing bases. The foundations that the cofferdam crews had placed in the riverbed in 1899 and 1900, in concrete on bedrock or in compacted gravel below scour depth, were subjected to hydraulic forces beyond the normal range, and the foundations did not move. The piers showed no differential settlement.
The truss above did not shift. The bridge was in service when the water receded. The flood of 1936 came at similar levels. The bridge held.
It has held through every spring flood since. The automobiles that reached Carleton County after 1910 were initially lighter than the heaviest horse-drawn freight wagons the bridge was designed to carry. As motor vehicle numbers grew through the 1920s and 1930s, vehicles grew heavier. Farm trucks moving grain and livestock across the river imposed deck loads that the engineer who drew the lattice truss in the late 1890s had not specifically designed for, because motor trucks did not yet exist in commercial form when the design was made.
The county monitored the bridge’s load capacity at intervals and imposed vehicle weight limits justified by the capacity of the wooden truss structure. The bridge carried what the limits allowed. The limits changed as the timber aged and as reinforcement work increased or reduced the estimated capacity. A two-lane covered bridge carrying motor traffic in both directions across 1,282 feet of a major river is not what modern highway engineers design when they design a river crossing.
The approaches at either end of the Hartland bridge today are managed by traffic signals regulating flow across the single-lane sections of the crossing. The signals are electronic. The bridge is wooden. In the year the bridge was built, no one in Hartland or in the county road department could have specified a signal system because none had been invented.
The bridge was built for the crossing demands of 1901. It has been adapted to the crossing demands of every year since. The adaptations have accumulated around the structure without changing the structure itself. The Hartland Covered Bridge was designated a National Historic Site of Canada in 1980, seventy-nine years after the carpenters finished driving the tree nails above the October river.
The designation records the structure as the longest covered wooden bridge in the world and as a heritage landmark of New Brunswick and the Saint John River valley. It records the construction date. It records the contracting firm. The designation has produced a tourist presence in Hartland that draws visitors to walk the bridge, photograph it from the riverbank, and read the interpretive panels at the entrances.
If you drive to Hartland, stop near the eastern entrance on the Hartland side of the river, and walk inside the bridge, you enter a covered wooden structure 1,282 feet long. At walking speed, crossing it takes several minutes. The deck under your feet has been replaced in maintenance cycles over the decades, but it remains entirely wooden. The same material the original carpenters used is laid on the same structure.
The lattice rises on both sides from the lower chord to the upper chord beneath the roofline. The diagonal planks of the lattice cross at their fixed angle, pinned at every intersection. In the longer straight sections of the bridge, the converging lines of the lattice toward the far portal create a visual perspective shared by covered bridge interiors across the region. A long wooden tunnel narrowing toward the light.
Light enters through the side openings in long horizontal bands across the floor. The wooden truss pins at the lattice intersections are visible where the surface of the wood has cracked slightly around the pin head. Some of those wooden pins were driven in 1900. Some were driven in 1921.
Some were replaced in later maintenance work. The bridge does not identify which parts are original and which are not. At the midpoint of the bridge, you are 641 feet from either bank above the main navigation channel of the Saint John River. The pier directly below your feet was placed in the riverbed by the cofferdam crews in the fall of 1899 or 1900, men working in cold water inside a wooden enclosure while the river pressed on the other side.
The lattice truss above you was framed by woodworkers who drove thousands of tree nails in the weeks before the October frost ended the construction season. The cover you stand inside was built by a different set of workers in 1921 and 1922, twenty years after the bridge itself was built, in response to a deterioration process that anyone who understood wooden structures in the New Brunswick climate could have predicted on the day the original builders chose to do without it. The National Historic Site designation does not record the names of the men who drove those tree nails. The plaque at the bridge entrance records the name of the structure, its date, and its designation.
It does not record the names of the carpenters who worked on the scaffolds above the October river. The provincial records of the Hartland bridge construction are held in the Provincial Archives of New Brunswick in Fredericton. Whether those records identify the individual workmen who framed the truss spans and worked in the cofferdams in the fall of 1900, or whether they preserve only the contractor’s total costs and the aggregated labor cost entries that 1900 accounting kept, is a question the archives answer according to what the accounting of that era was designed to record. The contracting firm that built the Hartland bridge appears in the financial records.
The engineer responsible appears in the correspondence. The foremen appear where the construction letters mention them. The individual carpenters and cofferdam workers below the level of foreman appear, if they appear at all, as a total of daily wages. The men who drove the tree nails in October 1900 exist in those records to the extent that provincial bridge-contract accounting of that era kept individual workers’ names rather than aggregate costs.
They came from the communities along the Saint John that the timber trade had built and that the decline of that trade left with skilled hands and shrinking opportunity. They were in some cases from the Irish parishes of Carleton County, whose founding families had arrived in the 1840s with nothing and built a generation of familiarity with hard work in the river valleys of New Brunswick. They were in some cases Acadian families for whom the Saint John was a landscape of centuries. They were working on a bridge in a valley that was their valley, a bridge that the valley needed for the permanent crossing they were building, because the ferry was not enough, the ice road was not reliable, and the spring flood isolated the banks from each other for weeks every April.
Whether any of these men returned after the bridge was finished and crossed it on horseback in the summer of 1901, and realized that the structure they had built would still be carrying traffic more than a century later, is a question the records cannot answer. The bridge has stood. The river has run beneath it. The tree nails have held the joints.
The county put a roof over it in 1921. The floods of 1923 and 1936, and every spring since, have tested it. The ice runs have tested the foundations every April. The motor vehicles that replaced the horses have tested the deck’s load capacity across the decades.
None of these tests has closed the bridge permanently. It remains open. Vehicles cross it today. No covered wooden bridge anywhere in the world is longer.
None has been built longer since 1901. The 1,282-foot lattice truss bridge over the Saint John River at Hartland, New Brunswick, holds the record that the timber framers who drove the tree nails in October 1900 gave it. The men who built it exist in the records of the Provincial Archives in Fredericton. The bridge exists in the river.
The river runs every spring at levels that test the foundations. The foundations hold.
