Ufa Rail Bridge

Constr

Ufa rail bridge carries double tracked rail lines over the River Belaya. It is located at Ufa, the Republic of Bashkortostan, Russia.^[1]

Constructed between 1886 and 1888, the Belaya River bridge was a crucial component of the Trans-Siberian Railway. Its completion coincided with that of other vital spans, such as the three-span bridge over the Ufa River. This structure established a permanent rail crossing for trains bound for Ufa, thereby facilitating the railway's eastward expansion, which ultimately reached Chelyabinsk by 1892.^[2][3]

The structure was built according to the design of Nikolai Belelubsky, a distinguished Russian engineer and professor at St. Petersburg State Transport University. Vladimir Berezin served as the chief engineer, with geodetic support provided by Nikolai Boguslavsky. By the time of the design, Belelubsky had accumulated two decades of experience in bridge construction and was known for pushing the boundaries of progressive railway engineering.

Among Belelubsky’s most significant contributions was the "free-moving deck," also known as the "Russian system." This innovation allowed the roadway to expand and contract independently of the main truss, addressing critical challenges related to thermal expansion and structural stress in long-span bridges.

A sliding mechanism between the deck and the truss, allowed the roadway to move freely while maintaining the stability of the main truss structure. Simply put, each end of the beam rests on a pivoting support, allowing for slight rotation under thermal expansion or load. This automatically relieves stress and prevents structural failure.^[4]

This innovation:

• prevented stress accumulation by accommodating thermal expansion.
• improved durability by reducing wear on fixed connections.
• enhanced load distribution, making long-span bridges safer and more efficient.

This design was regarded as progressive because it reduced additional stresses in the truss members. Indeed, at the 1896 Edinburgh International Exhibition, this construction received a Gold Medal and later entered worldwide bridge‑building practice as the "Russian system."^[5]

The bridge was constructed in accordance with the Technical Regulations for Railway Bridges (1884), which stipulated specific limits on axle loads, span lengths, and material quality, ensuring its structural integrity.

Although bridge construction at the time depended heavily on welded iron joints, Belelubsky's load tests proved cast steel's superior strength-to-weight ratio and fatigue resistance over welded iron. He advocated for prefabricated steel components to reduce on-site labor and improve dimensional accuracy, despite resistance from government ministries concerned about supply chain disruption and retooling costs. His persistence led to the adoption of standardized steel profiles, transforming Russian construction and setting a precedent that would echo throughout the coming century. All steel components, it should be noted, were fabricated at the Votkinsk Plant in Udmurtia.

In the superstructure, Beleleubsky employed semi-parabolic trusses that feature a vertical support column and a single, curved lower chord, arranged within a double-braced lattice system. This double-braced configuration delivers high rigidity, shortens the length of each truss panel, and reduces the overall weight of the bridge components. The vertical column simplifies the bearing assembly and the support frame, making it easier to connect the transverse bearing beams to the trusses.

Belelubsky, recognizing the potential of reinforced concrete in the 1880s, advocated for its use in abutments and ancillary structures, predicting its central role in future bridge construction.

The bridge consists of six identical spans, each 109.25 m long, resting on massive masonry piers. To protect the piers against natural forces, the bridge was fitted with large starlings (cutwaters) positioned strategically upstream. This design effectively broke up downstream ice flows during the annual spring thaw.

On September 8, 1888, Admiral Konstantin Posyet, Minister of Railways, ceremonially cut a silk ribbon stretched between the bridge's trusses. The inaugural train then proceeded onto the newly opened Ufa railway station. Initially, the bridge provided pedestrian access on its side decks, separating foot traffic from the railway. However, this access was later restricted due to safety and operational concerns after a trial period.

During the Russian Civil War, the sixth span of the bridge was deliberately destroyed by the White Army under Kolchak’s command. The 61,050-pood (≈ 1,000-ton) steel truss was partially dislodged, with one end plunging into the river while the southern end remained precariously perched on the pier, rendering the structure unusable.

• Temporary Bypass (June 1919): Engineers erected a temporary detour bridge. This involved jack-lifting the surviving portion of the original truss and installing a 23-meter (75-foot) temporary span along with a 25-meter (82-foot) approach viaduct. Trains began using this temporary structure ahead of schedule, earning commendation from the national leadership. The first acknowledgment came in a telegram from Vladimir Lenin, dated October 10, 1919, addressed to the bridge-building crew.

• Permanent Replacement (October 1919): Once the temporary bridge was removed, a new permanent span, designed by Professor Lavr Proskuryakov according to the 1907 Technical Regulations for Railway Bridges, was installed. The design prioritized minimizing interruption to rail traffic. In just seven hours, winches shifted the temporary spans onto their own supports. Then, remarkably, within 3 hours and 45 minutes, winches lifted the new permanent truss onto the piers.

An apparently ordinary inspection card for this bridge, dating back to 1928, is preserved at the Ufa railway division. It contains a strikingly detailed set of operational restrictions, stating:

“Trains equipped with a pair of E-type locomotives, as well as any train carrying American-style half-wagons, are prohibited from crossing this bridge. When a single E-type locomotive crosses, its speed must not exceed 8 km/h (5 mph).”

For comparison, the axial line load (load per meter of bridge span) of an E-type steam locomotive on a 110-meter bridge is 6.94 tonnes per meter (t/m). In contrast, a modern VL10 electric locomotive exerts a load of 6.09 t/m.

The 1928 inspection card explicitly limited double-engine E-type trains, suggesting the bridge's capacity was insufficient for a combined line load exceeding approximately 13 t/m (roughly 2 x 6.94 t/m).

American half-wagons, or gondolas, were banned because their axle load (around 9–10 tonnes per axle, or ≈7.8 tonnes per meter on a 110-meter span) exceeded the bridge's permissible load limit of 6.94 tonnes per meter for Series E locomotives (modern VL10u is 6.09 tonnes/meter). To transport such cargo, operators were required to either transfer it to lighter, locally built wagons or split it into smaller loads that met the bridge’s restrictions.

The bridge was repeatedly reinforced and rebuilt throughout the twentieth century to handle growing traffic. Between 1937 and 1939, the bridge spans were reinforced to support larger locomotives. Modifications, including the addition of metal reinforcements, increased the spans’ weight by up to 4% while ensuring compliance with clearance standards.

Between 1949 and 1951, Construction Train No. 417—a mobile engineering unit—performed reconstruction work. The team erected new reinforced-concrete pylons for the second track on the original cutwater footings and installed a new superstructure with standardized trusses designed to the latest Soviet specifications (N-7 load class), as specified by ProektStalKonstruktsiya in 1943. This standard equates to the North American E-72 and closely matches the European UIC 71 loading model (≈30-tonne axle load).

Between 1991 and 2001, the bridge underwent modernization, with OJSC TransStroyMost replacing the original 1888 spans with new structures compliant with the Russian S-14 load class. This upgrade enables high-speed freight and intermodal rail traffic, aligning with North American Cooper E-80 (≈32.5-tonne axle load) and European LM2 specifications.^[6]

The double-track railway bridge spanning the Ufa River near Shaksha Station is a striking three-span structure, with each span measuring 109 m. Designed by Nikolai Belelubsky, it follows the 1884 construction standards and closely mirrors its counterpart over the Belaya River.

On 9 June 1919, during the Ufa Operation of the Civil War, Kolchak’s White Army forces sabotaged the bridge’s third span as they retreated. The explosion was triggered by artillery fire directed at railcars loaded with explosives positioned on the span.

Reconstruction took place in two stages: first, temporary wooden spans were installed, followed by a full repair in 1920. The new span was designed by Professor Lavr Proskouriakov in accordance with the 1907 Technical Regulations for Railway Bridges.^[7]

In 1939–1940, the bridge spans were reinforced to support larger locomotives. Modifications, including the addition of metal reinforcements, increased the spans’ weight by up to 4% while ensuring compliance with clearance standards.

In 1951–1952, Construction Train No. 414 rebuilt the bridge, erecting reinforced-concrete pylons on the original cutwater footings and installing new spans for the second track in accordance with Giprotrans’ 1931 N‑7 load class standard.

Between December 2001 and 2002, the bridge underwent major upgrades. All the pre-revolutionary spans were replaced with modern equivalents supplied by OJSC USK MOST, designed to meet the S‑14 load class standard.^[8]

• In 1888 only a handful of Ufa residents knew that an artificial channel was being dug for the Dema River. Starting about 100 metres downstream of the present highway bridge near the “Golden Fish” café, the cut was made directly toward the Belaya River to avoid building a second railway bridge over the Dema. Historically, the Dema joined the Belaya several kilometres downstream, forming a broad, shallow waterway that often turned into a ford. The artificial channel therefore reshaped the local hydrography, turning what was then an island—now the settlement of Kozorez—into part of the main river course.

• In 1910, Sergey Prokudin‑Gorsky captured the first color photographs of the bridge using his pioneering three‑color technique. He exposed a single glass plate three times, each through a different filter—first blue, then green, and finally red. When the three monochrome images were later projected together, they reconstructed the scene in vivid, natural color, marking a milestone in photographic history.^[9][10]

• Just downstream of the bridge, a small island drifts in the Belaya River, reshaping itself each year. In summer, it extends a narrow stretch toward the right bank, transforming into a temporary peninsula that locals cross at low tide. Its existence is a quirk of history: in the early 1900s, two barges overloaded with sacks of bread capsized here. Their hulks settled on the riverbed, forming a sturdy framework that trapped sediments. Over decades, the river deposited sand, silt, and vegetation around the wreckage, gradually raising the spot above the waterline—turning a tragic mishap into a living, ever-changing landform.

• Nikolai Belelubsky
• Lavr Proskuryakov
• Trans-Siberian Railway

• Уфа, губернский город // Энциклопедический словарь Брокгауза и Ефрона: В 86 томах (82 т. и 4 доп.). — СПб., 1890-1907. (in Russian)
• История Уфы: краткий очерк / Ганеев Р.Г., Болтушкин В.В., Кузеев Р.Г.. — Уфа: Башкирское книжное издательство, 1981. — 604 с. (in Russian)
• Синенко С.Г. Город над Белой рекой. Краткая история Уфы в очерках и зарисовках 1574-2000. — Уфа: Государственное республиканское издательство «Башкортостан», 2002. — 5000 экз. (in Russian)
• Нигматуллина И.В. Старая Уфа. Историко-краеведческий очерк.. — Уфа: Белая река, 2007. — 224 с. — 3000 экз. — ISBN 978-5-87691-036-3 (in Russian)

• Ufa City Bridges (Black & White) (in Russian)
• Education in Russia for Foreigners: University cities of Russia. Ufa Archived 2020-03-04 at the Wayback Machine
• Official website of Ufa
• Ufa virtual tour Archived 2011-01-30 at the Wayback Machine
• 360 Panoramas of Ufa
• Photos of Ufa